Site log - Kwaj (Jan 1998)

Flags:

1-Satellite coincidence data
2-Scan in TSDIS data
3-Scan not in TSDIS data
A-Major problem (moderate to strong AP &/or widespread coverage)
B-Minor problem (weak AP &/or very litte coverage)

*********************************************************************************************

01 Jan 98:   Scattered light showers and small convective cells surrounding radar
             periodiocally throughout day.  Increase in shower coverage 1004Z --> 2146Z.
             
             Data Processed: 0008-2351Z

             Satellite Coincidence:  0452Z, 1755Z
             
             QC notes:  0642Z  Radial spike SW of radar with precip.  Spike is mainly beyond
                               150 km range.
                          ---> corrected
                          
                        1904Z  Radial spike with precip. SE of radar.  Spike is mainly beyond
                               150 km range.
                          ---> corrected
                          
  3A          !!FLAG!!  1913Z  Diminshed reflectivities at radar when showers move directly
                               over radar - NO FIX AVAILABLE.  
                               
                        2038-2210Z  overall dimmed reflectivities probably due to radar calibration.
                        
************************************************************************************************

02 Jan 98:   Widely scattered light shower activity throughout entire day.

             Data Processed:  0001-2353Z
             
             Satellite Coincidence:  0516Z, 1819Z
             
             QC notes:  0635Z  Radial spike SW of radar - mainly, but not entirely beyond
                               150 km range - no precip
                          ---> corrected within 150 km.
                          
                        1905Z  Radial spike with precip SE of radar.  Spike is mainly beyond
                               150 km range
                          ---> corrected within 150 km
                        
                        2003Z  Radial spike with precip NNE of radar.  Spike is mainly beyond
                               150 km range.
                          ---> corrected
                                   
                        2128Z-2148Z  overall dimmed reflectivities probably due to radar calibration.
                        
*****************************************************************************************************

03 Jan 98:  Widely scattered light shower activity surrounding radar periodically throughout day.

            Data Processed:  0002Z-2359Z
            
            Satellite Coincidence:  0404Z, 0701Z
            
            QC notes:  0637Z  Radial spike SW of radar - no precip.
                         ---> corrected within 150 km. 
                         
                       1908Z  Radial spike with precip. SE of radar.
                         ---> corrected within 150 km.
                         
*****************************************************************************************************

04 Jan 98:  Widely scattered light showers mainly N of radar 10Z --> 12Z.
            Scattered showers / storms surrounding radar 14Z --> 2351Z.
            Thin line of showers / storms approaching radar from NE at 2351Z.
            
            Data Processed:  0009Z-2351Z
            
            Satellite Coincidence:  0251Z, 1731Z
            
            QC notes:  0644Z  Radial spike with precip SW of radar.  Spike and precip mainly
                              beyond 150 km range.
                         ---> corrected
                         
                       1906Z  Radial spike with precip SE of radar.  Spike mainly beyond 150 km range
                         ---> corrected within 150 km.
                         
******************************************************************************************************

05 Jan 98:  Numerous showers / storms surrounding radar throughout day.
            Thin line of showers / storms moves over radar at 0948Z (SEE FLAG BELOW).
            
            Data Processed:  0001Z-2358Z
            
            Satellite Coincidence:  0315Z, 1618Z
            
            QC notes:  
            
  3A         !!FLAG!!  0938Z --> 0957Z  Diminished reflectivities when line of showers / storms
                                        moves directly over radar - NO FIX AVAILABLE
                                        
                       1907Z  Radial spike with precip. SE of radar.  Spike is mainly beyond 150 km range
                         ---> corrected within 150 km.
                         
                       1937Z  Radial spike with precip. NW of radar.  Spike is mainly beyond 150 km range
                         ---> corrected within 150 km.
                         
*******************************************************************************************************                                                                                                                 

06 Jan 98:  Scattered light showers surrounding radar throughout day.
            Organized bands of showers / small storms passing mainly N of radar 1645Z --> 2355Z
            
            Data Processed:  0008Z-2355Z
            
            Satellite Coincidence:  0203Z, 1642Z
            
            QC notes:  0645Z  Radial spike with light precip. SW of radar mainly beyond 150 km range.
                         ---> corrected
                         
                       1910Z  Radial spike with light precip. SE of radar.
                         ---> corrected within 150 km.
                         
                       2326Z  Radial spike with light precip. NW of radar.
                         ---> corrected
                         
                       2356Z  Radial spike with light precip. NW of radar.
                         ---> corrected
                         
*******************************************************************************************************

07 Jan 98:  Scattered shwrs / t-shwrs throughout day - mainly N of radar.

            Data Processed:  0005Z-2353Z
            
            Satellite Coincidence:  0227Z, 1530Z
            
            QC notes:
              
                0005Z-0632Z:  Light shwrs (10 dBZ) removed by default QC params.  A few specks of ground
                              clutter brought back, but not major enough for flagging.
                         ---> corrected
                         
 3B         !!FLAG!!  0641Z:  Second trip (radial spike) SW of radar (with precip).  Also, light
                              precip removed by default QC params.  This is a bad combination.  I
                              brought back the light shwrs at the expense of leaving the second
                              trip.  The second trip echo is mainly, but not entirely beyond 150 km range.
                              
                0651Z-1443Z:  Light shwrs (10 dBZ) removed by default QC params.  A few specks of ground
                              clutter brought back, but not major enough for flagging.
                         ---> corrected  
                  
                      1904Z:  second trip (radial spike) SE of radar beyond 150 km range.
                              No action taken.
                              
                2128Z-2147Z:  Dimming of reflectivities over entire range - probably related to
                              radar calibration.
                              
                      2236Z:  Second trip (radial spike) NW of radar - no precip
                         ---> corrected   
                         
                2305Z-2314Z:  Second trip (radial spike) NW of radar - no precip
                         ---> corrected 
                         
********************************************************************************************************                                                                                
                                                     
 08 Jan 98:  Light scattered showers (10-15 dBZ) throughout day.
 
             Data Processed:  0002Z-2358Z
             
             Satellite Coincidence:  0114Z, 1417Z
             
             QC notes:
             
                       1909Z:  Second trip echo (radial spike) SE of radar (with precip)
                          ---> corrected within 150 km range.
                          
*********************************************************************************************************                          
                                                             
 09 Jan 98:  Scattered light shwrs N of radar ~ 0437Z
             Shower activity surrounding radar 1355Z --> 2352Z.
             
             Data Processed:  0007Z-2352Z
             
             Satellite Coincidence:  0138Z, 1441Z
             
             QC notes:
             
                       0642Z:  second trip echo (radial spike) SW of radar - no precip.
                          ---> corrected within 150 km range.
                          
                       0651Z:  second trip echo (radial spike) NE of radar - no precip.
                          ---> corrected within 150 km range.
                          
                       1913Z:  second trip echo (radial spike) SE of radar - with precip present.
                          ---> corrected within 150 km range.
                          
***************************************************************************************************************                          
                       
 10 Jan 98:  Light scattered shwr activity surrounding radar periodically throughout day.
 
             Data Processed:  0002Z-2352Z
             
             Satellite Coincidence:  0026Z, 1328Z, 2313Z
             
             QC notes:                       

                 0646Z-0656Z:  second trip echo (radial spike) SW of radar at 0646Z, and NE
                               of radar at 0655Z - with light precip present both times.
                          ---> corrected.
                          
                       1908Z:  second trip echo (radial spike) SE of radar - light precip present.
                          ---> corrected.
                          
****************************************************************************************************************                          
                                
 11 Jan 98:  Very light (5-10 dBZ) showers passing within radar range at various times throughout day.
 
             Data Processed:  0002Z-2352Z
             
             Satellite Coincidence:  1352Z, 2336Z
             
             QC notes:
             
                       0646Z:  second trip echo (radial spike) SW of radar - no precip
                          ---> corrected within 150 km range.
                          
                       1907Z:  second trip echo (radial spike) SE of radar - no precip within 150 km.
                               (5-10 dBZ speck showers beyond 150 km range)
                          ---> corrected within 150 km range.
                          
*********************************************************************************************************************                          

 12 Jan 98:  Light showers (10 dBZ) passing over and surrounding radar periodically throughout day.
 
             Data Processed:  0002Z-2353Z
             
             Satellite Coincidence:  1239Z, 2353Z
             
             QC notes:
             
                       0646Z:  second trip echo (radial spike) SW of radar - light precip present.
                          ---> corrected within 150 km range.
                          
                          --------------------------------------------------------------
                          
                 1348Z-1837Z:  Light showers (~10 dBZ) removed by default QC params. 
                          ---> corrected       
                          
                       1651Z-1730Z:  Light ground clutter specks brought back when Z thresholds reduced to bring
                                     back light precip. 
                                ---> corrected
                          --------------------------------------------------------------
                          
                       1916Z:  second trip echo (radial spike) SE of radar - light precip present.
                          ---> corrected.
                          
*************************************************************************************************************************                                  
 13 Jan 98:  Light scattered showers (10 dBZ) develop develop and then dissipate
             from 1203Z-1613Z and 1847Z-2053Z.
             No organized systems.  Majority of day w/o precip.
             
             Data Processed:  0002Z-2356Z
             
             Satellite Coincidence:  1303Z, 2248Z 
             
             QC notes: 0646Z:  second trip echo (radial spike) SW of radar - mainly
                               beyond 150 km range - no precip.
                          ---> corrected within 150 km.
                          
                 1153Z-1534Z:  Light showers (10 dBZ) removed by default QC params.
                          ---> corrected 
                          
                 1847Z-2053Z:  Light showers (10 dBZ) removed by default QC params.
                          ---> corrected EXCEPT FOR FLAGS BELOW!
 3B         !!FLAG!!   1856Z:  clutter specks brought back with light showers. 
 2B         !!FLAG!!   2004Z:  clutter specks brought back with light showers.
 3B         !!FLAG!!   2043Z:  clutter specks brought back with light showers.
 3B         !!FLAG!!   2053Z:  clutter specks brought back with light showers.
                               Note:  5 dBZ second trip echo brought back with
                                      showers at 1232, 1241, 1251, 1906, and
                                      1916 Z.  Too light for concern and mainly
                                      beyond 150 km range. 
                                                 
 ***********************************************************************************************************************
                                                                                      
 14 Jan 98:  Scattered light shower activity (10-15 dBZ) surrounding radar at various
             intervals throughout day.
             
             Note:  0904Z-1607Z  Extremely light (0-10 dBZ) shallow, specky
                    showers removed by default QC params.  In my opinion, these
                    showers are too light for concern.  Bringing them back would
                    only introduce widespread clutter.  Because of the small scale
                    specky nature of these showers, the decision was made not to
                    bring them back - it would cause virtually the entire period
                    to be flagged. 
             
             Data Processed:  0005Z-2359Z
             
             Satellite Coincidence:  1151Z, 2136Z
             
             QC notes:  
             
                 0132Z-0854Z:  Light shallow showers removed by default QC params
                          ---> corrected EXCEPT FOR FLAGS BELOW!
 2B         !!FLAG!!   0535Z:  Clutter specks brought back with light showers.
 3B         !!FLAG!!   0611Z:  Clutter specks brought back with light showers.
      no flag          0649Z:  Second trip echo beyond 150 km range SW of radar.
                               Possibly due to solar interference.
           ----------------------------------------------------------------------
                 1617Z-2359Z:  Light shallow showers removed by default QC params
                          ---> corrected EXCEPT FOR FLAGS BELOW! 
 3B         !!FLAG!!   1910Z:  Second trip echo SE of radar could not be removed
                               due to presence of light precip.
 3B         !!FLAG!!   2252Z:  Clutter specks and second trip echo NW of radar.
                               Could not be removed due to presence of light precip.
 3B         !!FLAG!!   2302Z:  Clutter specks brought back with light showers.
 
 ***********************************************************************************
 
 15 Jan 98:  Light showers throughout entire day.  Precip is much more organized
             and widespread than in previous days.
             
             Data Processed:  0009Z-2355Z
             
             Satellite Coincidence:  1039Z, 2200Z
             
             QC notes:  Entire day reprocessed!  Light showers occurred all day
                        and default QC params removed the majority of them.
                        When showers were brought back, ground clutter was brought
                        back with it, and second trip echos could not be removed.
                        Most of the clutter and second trip is minor.
                        1259Z - Dimming of reflectivities probably due to radar
                                calibration.  
                        
 2B         !!FLAG!!   0400Z:  Clutter specks brought back with light showers.  
 3A         !!FLAG!!   0643Z:  Second trip echo could not be removed due to presence
                               of light precip.
 3B         !!FLAG!!   0750Z:  Clutter specks brought back with light showers.
 1B         !!FLAG!!   1024Z:  Clutter specks brought back with light showers.
 
 2B         !!FLAG!!   
                 1112Z-1611Z:  Clutter specks brought back with light showers.
                 
 2B         !!FLAG!!   1709Z:  Clutter specks brought back with light showers.
 3A         !!FLAG!!   1738Z:  Second trip echo could not be removed due to presence
                               of light precip.
 2B         !!FLAG!!   1905Z:  Clutter specks brought back with light showers.
 3A         !!FLAG!!   1914Z:  Clutter specks and second trip brought back with shwrs
                                                             
 1B         !!FLAG!!
                 1924Z-2257Z:  Clutter specks brought back with light showers
                 
 3A         !!FLAG!!   2345Z:  Clutter specks and second trip brought back with shwrs
 
 *************************************************************************************                                                                                                          
                               
 16 Jan 98:  Widespread light shower activity throughout day.
 
             Data Processed:  0005Z-2354Z
             
             Satellite Coincidence:  1103Z, 2048Z
             
             QC notes:  A large portion of this day was reprocessed due to default
                        QC params removing light shower activity.  Clutter was
                        brought back also.
                        2110Z-2129Z - Dimming of reflectivities probably due to radar
                                      calibration.
                                      
                 0005Z-0151Z:  Light showers removed by default QC params.
                         --->  corrected 
                         
                       0230Z:  Ground clutter speck - no precip.
                         --->  corrected.
                         
                       0357Z:  Second trip echo (radial spike remnant) NW of radar
                               - no precip.
                         --->  corrected
                         
                       0642Z:  Second trip echo (radial spike remnant) SW of radar
                               - no precip.
                         --->  corrected 
                         
                ----------------------------------------------------        
                 1053Z-2002Z:  Light showers removed by default QC params.
                         --->  corrected EXCEPT FOR FLAGS BELOW!!
                         
 3B         !!FLAG!!   1258Z:  Clutter specks brought back with light showers  
 3B         !!FLAG!!   1317Z:  Clutter specks brought back with light showers
 3B         !!FLAG!!   1327Z:  Clutter specks brought back with light showers
 3B         !!FLAG!!   1356Z:  Clutter specks brought back with light showers
 3B         !!FLAG!!   1513Z:  Clutter specks brought back with light showers
 3B         !!FLAG!!   1523Z:  Clutter specks brought back with light showers 
 3B         !!FLAG!!   1551Z:  Clutter specks brought back with light showers  
 2A         !!FLAG!!   
                 1806Z-1933Z:  Clutter specks brought back with light showers
                               Second trip echo could not be removed due to
                               presence of light showers at 1914Z.
                               
                ----------------------------------------------------
                 2110Z-2129Z:  Dimming of reflectivities probably due to radar
                               calibration.
                                            
 ********************************************************************************                             
                                                                          
 17 Jan 98:  Multiple lines of showers (up to 30 dBZ) passing over radar from
             0004Z-0903Z.  Widespread shower activity (up to 30 dBZ) developes
             at 1118Z and continues throughout rest of day.  Multiple organized
             lines of showers pass over and near radar.
             
             Data Processed:  0004Z-2358Z
             
             Satellite Coincidence:  0951Z, 2112Z
             
             QC notes:  Once again, a large portion of this day had to be reprocessed
                        due to default QC params removing light shallow precip.  Some
                        clutter was unavoidably brought back as well.
                        
                        0336Z, 0414Z, 0531Z,0600Z, 0619Z, 2035Z, 2104Z, 2114Z  
                          Second trip echo (5 dBZ)  - could not be removed
                          due to presence of light precip.  These scans
                          were not flagged because the second trip echo was
                          very light and mainly beyond 150 km range.  
                                                         
                 ----------------------------------------------------        
                 0150Z-0903Z:  Light showers removed by default QC params
                         --->  corrected EXCEPT FOR FLAGS BELOW!!
 2B         !!FLAG!!            
                 0200Z-0317Z:  Clutter specks brought back with light showers
 3A         !!FLAG!!   0326Z:  Second trip echo could not be removed due to presence
                               of light showers.
 3A         !!FLAG!!   0648Z:  Second trip echo could not be removed due to presence
                               of light showers.
                               
                 0727Z-0853Z:  Very light clutter at radar (5 dBZ) - not flagged.              
                ----------------------------------------------------                                                                  
                 1459Z-1528Z:  Light showers removed by default QC params
                         --->  corrected EXCEPT FOR FLAGS BELOW!!                 
 3A         !!FLAG!!   1910Z:  Second trip echo could not be removed due to presence
                               of light showers.
                ----------------------------------------------------                                   
                 1704Z-1919Z:  Light showers removed by default QC params
                         --->  corrected 
                 
                       1939Z:  Second trip echo (radial spike) NW of radar - with precip
                         --->  corrected.
                         
                 2035Z-2114Z:  Light showers removed by default QC params
                         --->  corrected

 ********************************************************************************                       
 18 Jan 98:  Scattered light shower activity at various times throughout day.  This
             shower activity was deeper than on some of the shallow precip days.
             The QC algorithms appear to handle this deeper precip very well.
             This day was unusual due to the number of time periods with second
             trip echo.  All second trip echo was easily corrected.
             
             Data Processed:  0008Z-2352Z
             
             Satellite Coincidence:  1014Z, 1959Z
             
             QC notes:  The following time periods had second trip echo (usually at
                        far ranges) with light precip.
                        0242Z                        
                        0419-0438
                        0810
                        0839
                        0908
                        1006
                        1044
                        1319
                        1515-1534
                        1603
                        1622
                        1701-1710
                        1808-1837
                        2048-2108
                        2137
                        2206
                        2225Z
                  --->  ALL corrected.
                  
                    
                        The following time periods had second trip echo (usually at
                        far ranges) w/o precip.
                        0457-0516Z
                        0624-0643
                        0731
                        0751-0800
                        1202
                        1916Z
                  --->  ALL corrected.     
***********************************************************************************                  
 19 Jan 98:  Isolated specky light showers 0002Z-1349Z.  Showers become more
             numerous after 1349Z.
             
             Data Processed:  0002Z-2359Z
             
             Satellite Coincidence:  0902Z, 1847Z
             
             QC notes:  The following time periods had second trip echo (usually at
                        far ranges) with light precip.
                        0021-0040Z
                        0705
                        0744
                        0812-0822
                        0910-0920
                        0958
                        1027
                        1056
                        1134
                        1153
                        1544
                        2124
                        2222
                        --->  ALL corrected
                  
                        The following time periods had second trip echo (usually at
                        far ranges) w/o precip.
                        0157Z
                        0324
                        0343
                        0441-0451
                        0510
                        0646
                        --->  ALL corrected
                     -----------------------------------------------
                        1310-1320Z:  Light showers removed by default QC params
                        --->  corrected
                        
                     ------------------------------------------------
                        
                        1554-2115Z:  Light showers removed by default QC params.
                                     Some minor ground clutter brought back with
                                     showers which was not worthy of flagging.
                                     Some major and some minor problems occurred
                                     because of second trip echo.
                               --->  corrected EXCEPT FOR FLAGS BELOW!!
                        
 3B         !!FLAG!!      1740-1749Z:  Light second trip echo remains N of radar.
                                       Can not be removed due to presence of precip.
                                       
 1A         !!FLAG!!      1809-1945Z:  Second trip echo remains N of radar.
                                       Can not be removed due to presence of precip.
                                       Unfortunately, a satellite overpass occurs
                                       within this time period.
                                       
 2B         !!FLAG!!      2004-2115Z:  Light second trip echo remains N of radar.
 
                     ------------------------------------------------
                     
                        2232-2301Z:  Light showers removed by default QC params.
                               --->  corrected EXCEPT FOR FLAGS BELOW!!
                             
 2A         !!FLAG!!           2232Z:  Second trip echo N of radar could not be
                                       removed when showers brought back.
                                       
 2A         !!FLAG!!           2301Z:  Second trip echo N of radar could not be
                                       removed when showers brought back. 
                                       
 *************************************************************************************                                                                            
 20 Jan 98:  Scattered light showers periodically throughout day.
 
             Data Processed:  0008Z-2351Z
             
             Satellite Coincidence:  0926Z, 1911Z
             
             QC notes:  2215Z-2225Z Dimming of reflectivities - radar calibration.
             
                        Second trip echo with scattered light showers occured at
                        the following time periods.
                        0651Z
                        0739
                        1032
                        1100
                        1148
                        1325
                        1501
                        1540
                        1910
                        2045
                        2235
                        2342
                        ---> ALL corrected.
                        
                        2142-2152Z:  Clutter specks remaining .
                             --->    corrected
                             
                        0008-0515Z:  Light showers removed by default QC params.
                                     Showers mostly reinstated.  Problem of second
                                     trip echo being brought back also has partially
                                     been corrected by adjusting dBZ noise param.
                             --->    corrected EXCEPT FOR FLAGS BELOW!!
                             
 3B         !!FLAG!!           0251Z:  light second trip echo remnants
 2A         !!FLAG!!      0358-0408Z:  second trip and specks remain.
 2A         !!FLAG!!      0427-0505Z:  second trip and specks remain.
 **********************************************************************************                                                                                                            
                                                                              
 21 Jan 98:  Scattered light showers beginning 0349Z.  Increased shower / storm
             activity 1618Z-2355Z.  Several lines move over and near radar during
             this period.
             
             Data Processed:  0001Z-2355Z
             
             Satellite Coincidence:  0813Z, 1758Z
             
             QC notes:  2209Z-2218Z Dimming of reflectivities - radar calibration.
             
                        Second trip echo mainly at far ranges occurred at the 
                        following time periods - no precip.
                        0029-0039Z
                        0153Z
                        --->  ALL corrected.
                        
                        Second trip echo mainly at far ranges occurred at the
                        following time periods - with precip.
                        0107-0117Z
                        1012
                        1041
                        1256
                        1501
                        1608
                        --->  ALL corrected.
                        
                        Light showers removed by default QC params at the following
                        time periods.  New threshhold values determined Jan 20
                        were used to reprocess these periods.  Some light clutter
                        specks at the radar site were brought back with the showers.
                        Scans with clutter specks and showers in the area were not
                        flagged.  Most clutter was too light for concern.
                        
                       0349-0720Z:   Light showers removed by default QC params.
                             --->    corrected EXCEPT FOR FLAG BELOW!!
                             
 3B         !!FLAG!!         0651Z:   light second trip echo remnants mainly beyond
                                      150 km range.
                                      
                                      
                       1618-2355Z:   Light showers removed by default QC params.
                            --->     corrected EXCEPT FOR FLAG BELOW!!
                                            
 3A         !!FLAG!!         1911Z:   second trip echo SE of radar could not be
                                      removed due to presence of light precip.
**********************************************************************************                                                                            

 22 Jan 98:  Widespread shower / thunderstorm activity 0004Z-1206Z
             Lighter shower activity throughout remainder of day.
             
             Data Processed:  0004Z-2351Z
             
             Satellite Coincidence:  0837Z, 1822Z
             
             QC notes:  Light showers removed by default QC params at the following
                        time periods.  New threshhold values determined Jan 20 were
                        used to reprocess these periods (virtually the entire day).
                        A few specks of light ground clutter were brought back with
                        the showers.  Most clutter was too light for concern.
                        
                        0004-1059Z:  Light showers removed by default QC params.
                              --->   corrected EXCEPT FOR FLAG BELOW!!
                              
 3A         !!FLAG!!          0648Z:  Precip. with embedded second trip echo.
                                      Second trip could not be removed due to presence
                                      of precip.                               
                              
                              
                        1304-2351Z:  Light showers removed by default QC params.
                              --->   corrected EXCEPT FOR FLAG BELOW!!
                              
 3A         !!FLAG!!          1910Z:  Second trip echo SE of radar - could not be
                                      removed due to presence of light precip.                               
                              
 **********************************************************************************                                   

 23 Jan 98:  Light shower activity throughout entire day.
 
             Data Processed:  0001Z-2351Z
             
             Satellite Coincidence:  0724Z, 1709Z
             
             QC notes:  Entire day reprocessed because default QC params
                        removed light shower activity.
                        0216Z:  Bad VOS - image is totally corrupt!
                        
                        0001-2351Z:  Light showers removed by default QC params
                              --->   corrected EXCEPT FOR FLAGS BELOW!!
                              
 3A         !!FLAG!!          0216Z:  Bad VOS - image is corrupt - unknown reason
 3B         !!FLAG!!          0557Z:  Clutter speck brought back with light showers.
                                      Speck could not be removed due to precip.
 2B         !!FLAG!!          0801Z:  Clutter speck brought back with light showers.
                                      Speck could not be removed due to precip.
 2B         !!FLAG!!          1904Z:  Clutter speck brought back with light showers.
                                      Speck could not be removed due to precip.                                                                           
 3A         !!FLAG!!          1913Z:  Second trip echo SE of radar.
                                      Could not be removed due to precip.
***********************************************************************************                                       
                               
 24 Jan 98:  Widepsread shower activity periodically throughout entire day.
 
             Data Processed:  0001Z-2350Z
             
             Satellite Coincidence:  0612Z, 1733Z
             
             QC notes:  Entire day reprocessed because default QC params
                        removed chuncks of light shower activity.  A few
                        minor specks of ground clutter were brought back,
                        but they were too minor to flag the effected VOSs.
                        
                        Dimming of reflectivities 2038Z-2057Z - radar calibration
                        
                        0001-2350Z:  Light showers removed by default QC params
                              --->   corrected EXCEPT FOR FLAGS BELOW!!
                              
 1B         !!FLAG!!          0653Z:  Second trip echo SW of radar.  Could not be
                                      removed due to presence of precip.
 3B         !!FLAG!!          1913Z:  Second trip echo SE of radar.  Could not be
                                      removed due to presence of precip.
                                      
***********************************************************************************
 
 25 Jan 98:  Light shower activity developes ~0457Z and continues for remainder
             of day.
             
             Data processed:  0000Z-2353Z
             
             Satellite Coincidence:  0635Z, 1620Z
             
             QC notes:  Once again, light showers are removed by the default
                        QC params for a large chunk of the day.  Precip brought
                        back along with a few light ground clutter specks.
                        Specks were not intense enough for flagging.
                        
                        A large number of VOSs have second trip echo in DZ scans. 
                        
                        Dimming of reflectivities 2034Z-2100Z - radar calibration.
                        
                        0457-1657Z:  Light showers removed by default QC params.
                              --->   corrected 	EXCEPT FOR FLAG BELOW!!
                              
 1B         !!FLAG!!           0652Z:  Second trip echo SW of radar.  Could not be
                                       removed due to presence of precip.
                                      
                        2314-2353Z:  Light showers removed by default QC params.
                              --->   corrected 
                                                                                                                                
                             1912Z:  Second trip echo SE of radar - with precip.
                              --->   corrected
                              
***********************************************************************************                              

 26 Jan 98:  Widespread shower activity passing mainly S of radar for most of day.
             Additional shower activity developes N & E of radar at ~ 2100Z.
             
             Data Processed:  0002Z-2352Z
             
             Satellite Coincidence:  0523Z, 1508Z
             
             QC notes:  Entire day reprocessed with light precip params.  Default
                        QC params too harsh.  Significant amounts of light precip
                        removed throughout day.  Some minor clutter specks brought
                        back with showers, but were not severe enough for flagging.
                        
                        Dimming of reflectivities 2043Z-2103Z - radar calibration
                        
                        A large number of VOSs have second trip echo in DZ scans.
                        
                        0002Z-2352Z:  Light showers removed by default QC params.
                               --->   corrected EXCEPT FOR FLAGS BELOW!!
                               
 3B         !!FLAG!!           1916Z:  Second trip echo SE of radar.  Could not be
                                       removed due to presence of precip.
                                       
 3B         !!FLAG!!           2352Z:  Clutter speck SE of radar.  Could not be 
                                       removed due to presence of precip. 
                                       
                               0646Z:  Second trip SW of radar - not within 150 km
                                       range - not flagged.      
                                       
***********************************************************************************

 27 Jan 98:  Widespread shower activity throughout entire day.  Several lines
             of showers (up to 30 dBZ) pass over radar 0440Z-0821Z.
             
             Data Processed:  0002Z-2355Z
             
             Satellite Coincidence:  0547Z, 1532Z
             
             QC notes:  Most of day reprocessed with light precip params.
                        Possible hardware problem at 0002Z (SE of radar).
                        A radial spike is present at 0002Z but it does not
                        appear to be the usual second trip echo.
                        
                        0002Z-2051Z:  Light showers removed by default QC params.
                               --->   corrected EXCEPT FOR FLAGS BELOW!!
                               
 2A         !!FLAG!!      0002-0012Z:  Possible second trip echo contamination
                                       SE of radar.  This could also be a possible
                                       hardware problem.  Unusual spike appearance.
                                       
 2A         !!FLAG!!      0031-0119Z:  Severe second trip echo S of radar.  Could
                                       not be removed due to presence of precip.
                                       
 2A         !!FLAG!!           0402Z:  Intense clutter speck S of radar.  Could
                                       not be removed due to presence of precip.
                                       
 3B         !!FLAG!!           1915Z:  Minor second trip echo SE of radar.  Could
                                       not be removed due to presence of precip.
                                       
 2B         !!FLAG!!           1935Z:  Minor second trip echo NW of radar.  Could
                                       not be removed due to presence of precip. 
                                       
 3B         !!FLAG!!           1954Z:  Minor second trip echo NW of radar.  Could
                                       not be removed due to presence of precip.
                                       
***********************************************************************************                                                                                                                                                                                                                                   

 28 Jan 98:  Widespread shower and small storm activity developes ~ 1206Z, and
             continues for the remainder of the day.
             
             Data Processed:  0004Z-2358Z
             
             Satellite Coincidence:  0435Z, 1419Z
             
             QC notes:  A large portion of the day had to be reprocessed with
                        the new light precip qc parameters.  Too much data
                        being removed by default params.  When showers brought
                        back, a few minor (and some major - flagged below)
                        specks of ground clutter were also brought back.
                        
                        Dimming of reflectivities 2133Z-2143Z - radar calibration
                        
                        Default QC params did not remove ground clutter in many VOSs.
                        
                        The following time periods had intense ground clutter
                         - no precip to contend with.
                        0336Z
                        0355Z-0443Z
                        0503Z-0512Z
                        0532Z
                              --->  : ALL corrected
                     -----------------------------------------------------         
                              0649Z:  second trip echo SW of radar (no precip)
                              --->    corrected.
                     -----------------------------------------------------
                        1108Z-2358Z:  Light showers removed by default qc params
                              --->    corrected EXCEPT FOR FLAGS BELOW!!
                              
 2A         !!FLAG!!      1118-1137Z:  Intense ground clutter specks from atoll.
                                       Could not be removed due to presence of precip
                                       
 3B         !!FLAG!!           1909Z:  Second trip echo SE of radar.  Could not be
                                       removed due to presence of precip.
                                       
***********************************************************************************                                              

29 Jan 98:  Widespread shower / T-storm activity for entire day.  Several 30 dBZ
            lines pass over radar beginning ~ 12Z.
            
            Data Processed:  0007Z-2352Z
            
            Satellite Coincidence:  0459Z, 1443Z
            
            QC notes:  Light showers removed by default QC params for entire day.
                       Therefore, entire day reprocessed with light precip params.
                       0007-2352Z:  Light showers removed by default QC params.
                            ---->   Corrected EXCEPT FOR FLAGS BELOW!!
                            
 3A         !!FLAG!!        0605Z:  Second trip echo SW of radar.  Could not be
                                    corrected due to presence of precip.                          
 3B         !!FLAG!!   1519-1528Z:  Clutter specks - could not be removed due to
                                    presence of precip.
 3B         !!FLAG!!   1714-1724Z:  Clutter specks - could not be removed due to
                                    presence of precip.
 3B         !!FLAG!!        1909Z:  Second trip echo SE of radar - could not be
                                    corrected due to presence of precip.
 2B         !!FLAG!!        2036Z:  Clutter specks - could not be removed due to
                                    presence of precip.                                                                    
                       __________________________________________________________     
                       
                       Reduction in reflectivities as strong echos move directly over
                       radar.  30 dBZ echo is reduced to 10 dBZ directly at radar.
                       This is a hardware problem.  There is no QC fix.
                       
 2A,3A      !!FLAG!!   1236-1304Z:  Reduction in reflectivities.
 3A         !!FLAG!!   1812-1850Z:  Reduction in reflectivities.
 2A,3A      !!FLAG!!   2045-2124Z:  Reduction in reflectivities.
 1A,2A,3A   !!FLAG!!   2304-2352Z:  Reduction in reflectivities.
                            ---->   NOT CORRECTED
                        __________________________________________________________
                        
***********************************************************************************                                                     

30 Jan 98:  Widespread shower / T-storm activity for entire day.  Many lines move
            over and near radar throughout day.
            
            Data Processed:  0001Z-1947Z
                             2045Z-2112Z
                             2121Z-2356Z
                             
            Satellite Coincidence:  0346Z, 1331Z
            
            QC notes:  Dimming of reflectivities 2112-2121Z - radar calibration.
            
                       Light showers removed by default QC params for entire day.
                       Therefore, entire day reprocessed with light precip params.
                       
                       0001-2356Z:  Light showers removed by default QC params.
                            ---->   Corrected EXCEPT FOR FLAG BELOW!!
 3B         !!FLAG!!        1545Z:  Clutter specks - could not be removed due to
                                    presence of precip.
                                    
                       _________________________________________________________
                       
                       Reduction in reflectivities as strong echos move directly over
                       radar.  30 dBZ echo is reduced to 10 dBZ directly at radar.
                       This is a hardware problem.  There is no QC fix.
                       
 2A         !!FLAG!!   1204-1233Z:  Reduction in reflectivities.
                            ---->   NOT CORRECTED
                       ___________________________________________________________
                       
***********************************************************************************                                                                                                                   

31 Jan 98:  Widepsread showers throughout entire day.  Several lines of light showers
            move directly over and near radar.  Max dBZ ~= 30.
                        
            Data Processed:  0006Z-2359Z
            
            Satellite Coincidence:  0234Z, 1355Z
            
            QC notes:  Entire day reprocessed with light precip params.  Default
                       params were too harsh.  H1 bumped up to 1.7 km to remove
                       clutter specks that are occasionally brought back.
                       
                       0006-2359Z:  Light showers removed by default QC params.
                            ---->   Corrected EXCEPT FOR FLAGS BELOW!!
                            
 3A         !!FLAG!!        0650Z:  Second trip echo SW of radar - could not be
                                    removed due to presence of precip.
 3A         !!FLAG!!        1909Z:  Second trip echo SE of radar - could not be
                                    removed due to presence of precip.  
                                    
***********************************************************************************