From: oler@rho.uleth.ca (Cary Oler)
Newsgroups: sci.astro,rec.radio.amateur.misc,rec.radio.shortwave
Subject: Weekly Solar Terrestrial and CQ WW DX Forecast - 16-25 Oct
Date: 15 Oct 92 20:18:07 GMT
Organization: University of Lethbridge


               ---  SOLAR TERRESTRIAL FORECAST AND REVIEW  ---
                        October 16 to October 25, 1992

                Report Released by Solar Terrestrial Dispatch
                   P.O. Box 357, Stirling, Alberta, Canada
                                   T0K 2E0
                    Accessible BBS System: (403) 756-3008

                                  ---------

LONG-RANGE HF PROPAGATION FORECAST FOR THE "CQ WORLDWIDE" CONTEST PERIOD
------------------------------------------------------------------------

     Global HF propagation conditions for the CQ Worldwide Contest period of
24 and 25 October are expected to be near-normal.  There is some concern that
a recurrent coronal hole will influence propagation during the contest
period.  At the present time, the leading edge of this recurrent disturbance
is expected to begin enhancing levels of geomagnetic activity on 25 October.
The brunt of the disturbance is expected on 26 October.  However, there is a
chance the disturbance could arrive up to one day early, which could
influence propagation for the latter half of the contest period (on 25
October).

     There is a moderate to high degree of certainty regarding the arrival of
this disturbance in the 24 to 28 October time frame with preference for the
25 to 27 October period.  Recurrent analysis indicates that this disturbance
has been consistently geoeffective for the last two solar rotations.  It is a
fairly stable coronal structure.

     If the disturbance arrives early, expect propagation to be near-normal
over all regions on 24 October with high and polar latitude paths slightly
less stable than normal.  Under this scenario, conditions on 25 October could
become significantly degraded over the high and polar latitude paths, with
poor propagation into the northern or central middle latitude paths during
the night sectors.  Low latitude paths would remain near-normal, but would
see increased night and morning sector signal instabilities.

     At the present time, propagation during the 24 to 25 October period is
expected to be good over the low and middle latitude paths, and good to fair
over the high and polar latitude paths.  The brunt of the disturbance is
expected to arrive after the contest period ends.

     Consult next weeks weekly forecast for more accurate information.


SOLAR AND GEOPHYSICAL ACTIVITY FORECASTS AT A GLANCE
----------------------------------------------------

10-DAY SOLAR/RADIO/MAGNETIC/AURORAL ACTIVITY OUTLOOK

  | Solar |HF Propagation  +/- CON|SID PROB. Es  AU.BKSR  DX| Mag| Aurora |
  |Activty|LO MI HI PO SWF %MUF  %|ENH LO MI HI  LO MI HI  %|K Ap|LO MI HI|
--|-------|-----------------------|-------------------------|----|--------|
16| LO-MOD| G  G  F  F  20 -05  70| 15 NA NA NA  02 20 35 35|4 15|NV NV MO|
17| LO-MOD| G  G  F  F  20 -05  70| 15 NA NA NA  02 20 30 35|3 12|NV NV MO|
18| LO-MOD| G  G  P  F  20 -05  65| 15 NA NA NA  02 20 35 35|4 17|NV NV MO|
19| LO-MOD| G  G  F  F  20 -05  65| 15 NA NA NA  02 20 30 35|3 12|NV NV LO|
20| LO-MOD| G  G  F  F  20  00  70| 15 NA NA NA  02 20 30 35|3 12|NV NV LO|
21|  LOW  | G  G  F  F  20  00  70| 10 NA NA NA  02 20 30 35|2 10|NV NV LO|
22|  LOW  | G  G  F  F  20  00  65| 10 NA NA NA  02 20 30 35|2 10|NV NV LO|
23|  LOW  | G  G  F  F  20  00  65| 10 NA NA NA  02 20 30 35|2 10|NV NV LO|
24|  LOW  | G  G  F  F  20  00  65| 10 NA NA NA  02 20 35 35|3 12|NV NV LO|
25|  LOW  | G  G  F  F  20 -05  65| 10 NA NA NA  02 25 35 35|4 15|NV NV MO|

DEFINITIONS:

Date (day only)
Possible Magnitude of Solar Flaring (LOW=C-class, MOD=M-class, HIGH=M or X)
HF Propagation Conditions for LOw, MIddle, HIgh, and POlar areas (see below)
HF Short Wave Fade Probability (in %)
HF Maximum Usable Frequency in +/- percent above seasonal normals.
HF Prediction CONfidence Level (in %)
VHF Sudden Ionospheric ENHancement Probs (in %), weighted for low-mid lats
PROBability of "s"poradic E (Es) during the UT day for low, mid and high lats
VHF AUroral BacKScatteR Probs (in %) for LOw, MIddle and HIgh Latitudes
VHF Overall Global DX Potential (in %) - weighted for Low and Middle latitudes
Geomagnetic Activity Kp Index (peak value - see below)
GeoMAGnetic Activity Ap Index (peak value - see below)
AURORAl Activity for LOw, MIddle and HIgh Latitudes (see below)

HF Prop. Quality rated as: EG=Extremely Good, VG=Very Good, G=Good, F=Fair,
   P=Poor, VP=Very Poor, EP=Extremely Poor.
Probability of Sporadic E (Es) for the various latitudes is given in percent.
Kp Planetary Index rated: 0=V.Quiet, 1=Quiet, 2=Unstld, 3=Active, 4=V.Active,
   5=Minor Storm, 6=Major Storm, 7=Maj-Sev Storm, 8=Severe Storm, 9=V.Severe.
Ap Planetary Index rated: 0-7=Quiet, 8-16=Unstld, 17-29=Active,
   30-49=Minor Storm, 50-99=Major Storm, Severe Storm >=100.
Auroral Activity rated: NV=Not Visible, LO=Low, MO=Moderate, HI=High,
   VH=Very High.


PEAK PLANETARY 10-DAY GEOMAGNETIC ACTIVITY OUTLOOK (16 OCT - 25 OCT)
    ________________________________________________________________________
   |  EXTREMELY SEVERE |   |   |   |   |   |   |   |   |   |   | HIGH       |
   | VERY SEVERE STORM |   |   |   |   |   |   |   |   |   |   | HIGH       |
   |      SEVERE STORM |   |   |   |   |   |   |   |   |   |   | MODERATE   |
   |       MAJOR STORM |   |   |   |   |   |   |   |   |   |   | LOW - MOD. |
   |       MINOR STORM |   |   |   |   |   |   |   |   |   |   | LOW        |
   |       VERY ACTIVE |*  |   | * |   |   |   |   |   |   |   | NONE       |
   |            ACTIVE |** | * |***| * | * |   |   |   |   | **| NONE       |
   |         UNSETTLED |***|***|***|***|***|** |** |** |***|***| NONE       |
   |             QUIET |***|***|***|***|***|***|***|***|***|***| NONE       |
   |        VERY QUIET |***|***|***|***|***|***|***|***|***|***| NONE       |
   |-------------------|---|---|---|---|---|---|---|---|---|---|------------|
   | Geomagnetic Field |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun|  Anomaly   |
   |    Conditions     |     Given in 8-hour UT intervals      | Intensity  |
   |________________________________________________________________________|

                            CONFIDENCE LEVEL: 70%

NOTES:
       Predicted geomagnetic activity is based heavily on recurrent
phenomena. Transient energetic solar events cannot be predicted reliably over
periods in excess of several days.  Hence, there may be some deviations from
the predictions due to the unpredictable transient solar component.


60-DAY GRAPHICAL ANALYSIS OF GEOMAGNETIC ACTIVITY
         ____________________________________________________________
     90 |                         J                                  |
     86 |                        JJ                                  |
     81 |                        JJ                                  |
     76 |                        JJ                                  |
     72 |                        JJ      J                           |
     68 |      J                 JJ      J                           |
     63 |      J                 JJ      J           J               |
     58 |      J                 JJ      J           J               |
     54 |      J                 JJ      J           J               |
     50 |      J           J     JJ      J           J               |
     45 |      J           J     JJ      J           J               |
     40 |      J           J     JJ      J           J               |
     36 |      J           JM    JJ      J           J            M  |
     32 |      J           JM    JJM     J           J            M  |
     27 |      J           JMA   JJM     J           JA           M  |
     22 |   A  J           JMA   JJM     JA          JAA          M  |
     18 |   A AJ           JMA AAJJM     JA          JAA       A  M  |
     14 |   A AJ  A  A    AJMAAAAJJM     JA   U      JAA       A AMUA|
      9 |   AUAJU AU A    AJMAAAAJJMU UUUJAUU UU    UJAAU    UUAUAMUA|
      4 |QQQAUAJUUAUQAUUU AJMAAAAJJMUUUUUJAUUUUU UQ UJAAUUQQUUUAUAMUA|
      0 |QQQAUAJUUAUQAUUUQAJMAAAAJJMUUUUUJAUUUUUQUQQUJAAUUQQUUUAUAMUA|
         ------------------------------------------------------------
                         Chart Start Date:  Day #230

NOTES:
     This graph is determined by plotting the greater of either the planetary
     A-index or the Boulder A-index.  Graph lines are labelled according
     to the severity of the activity which occurred on each day.  The left-
     hand column represents the associated A-Index for that day.
     Q = Quiet, U = Unsettled, A = Active, M = Minor Storm,
     J = Major Storm, and S = Severe Storm.


CUMULATIVE GRAPHICAL CHART OF THE 10.7 CM SOLAR RADIO FLUX
----------------------------------------------------------

     ____________________________________________________________
159 |                                                            |
156 |    *                                                       |
153 |    *                                                       |
150 |    *                                                       |
147 |    *                                                       |
144 |    *                                                       |
141 |    *                                                       |
138 |    *                *                                      |
135 |*  **                *                             **       |
132 |** **                **                            **       |
129 |*****                ***                          ***       |
126 |*****                ***    *  *                 *****      |
123 |******               ***    *  *                 *****      |
120 |*******              ***    ****          *     *******     |
117 |*******             **************       ** * *********     |
114 |*******             **************      ***************     |
111 |********            ***************  ********************   |
108 |********            *************** ********************* * |
105 |********         *******************************************|
102 |*********        *******************************************|
099 |*********       ********************************************|
096 |**********  *  *********************************************|
093 |************************************************************|
090 |************************************************************|
     ------------------------------------------------------------
                        Chart Start:  Day #229


GRAPHICAL ANALYSIS OF 90-DAY AVERAGE SOLAR FLUX
-----------------------------------------------

     ____________________________________________________________
127 |                                                            |
126 |*****                                                       |
125 |************                                                |
124 |**********************************************              |
123 |**************************************************          |
122 |*****************************************************       |
121 |*******************************************************     |
120 |*********************************************************   |
119 |**********************************************************  |
118 |************************************************************|
117 |************************************************************|
     ------------------------------------------------------------
                        Chart Start:  Day #229

NOTES:
     The 10.7 cm solar radio flux is plotted from data reported
     by the Penticton Radio Observatory (formerly the ARO from
     Ottawa).  High solar flux levels denote higher levels of
     activity and a greater number of sunspot groups on the Sun.
     The 90-day mean solar flux graph is charted from the 90-day
     mean of the 10.7 cm solar radio flux.


CUMULATIVE GRAPHICAL CHART OF SUNSPOT NUMBERS
---------------------------------------------

     ____________________________________________________________
214 |                                                            |
205 |                                                  *         |
196 |                                                  **        |
187 |                                                  **        |
178 |                                                 ***        |
169 |                                                 ***        |
160 |                                                 ****       |
151 |                                               ******       |
142 |                                               ******       |
133 |**                                             ********     |
124 |**                                        *    ********     |
115 |**                                     ****   **********    |
106 |** *                        *         ***** ************    |
097 |*****                      ** *   * ******* ************    |
088 |*****                   * *** ***************************   |
079 |******            ***   *********************************   |
070 |******           *****  ********************************* * |
061 |*******      *  ***************************************** **|
052 |*******    * *  ********************************************|
043 |*******    *************************************************|
034 |********* **************************************************|
025 |************************************************************|
     ------------------------------------------------------------
                        Chart Start:  Day #229

NOTES:
     The graphical chart of sunspot numbers is created from the
     daily sunspot number counts as reported by the SESC.


HF RADIO SIGNAL PROPAGATION PREDICTIONS (16 OCT - 25 OCT)

                              High Latitude Paths
            ________________________________________________________
           | EXTREMELY GOOD |   |   |   |   |   |   |   |   |   |   |
           |      VERY GOOD |   |   |   |   |   |   |   |   |   |   |
CONFIDENCE |           GOOD |   |   |   |   |   |   |   |   |   |   |
  LEVEL    |           FAIR | **| **| **|***|***|***|***|***|***|***|
 -------   |           POOR |*  |*  |*  |   |   |   |   |   |   |   |
   65%     |      VERY POOR |   |   |   |   |   |   |   |   |   |   |
           | EXTREMELY POOR |   |   |   |   |   |   |   |   |   |   |
           |----------------|---|---|---|---|---|---|---|---|---|---|
           |  PROPAGATION   |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun|
           |    QUALITY     |    Given in 8 Local-Hour Intervals    |
            --------------------------------------------------------

                             Middle Latitude Paths
            ________________________________________________________
           | EXTREMELY GOOD |   |   |   |   |   |   |   |   |   |   |
           |      VERY GOOD |   |   |   |   |   |   |   |   |   |   |
CONFIDENCE |           GOOD | **|***| **|***|***|***|***|***|***|***|
  LEVEL    |           FAIR |*  |   |*  |   |   |   |   |   |   |   |
 -------   |           POOR |   |   |   |   |   |   |   |   |   |   |
   70%     |      VERY POOR |   |   |   |   |   |   |   |   |   |   |
           | EXTREMELY POOR |   |   |   |   |   |   |   |   |   |   |
           |----------------|---|---|---|---|---|---|---|---|---|---|
           |  PROPAGATION   |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun|
           |    QUALITY     |    Given in 8 Local-Hour Intervals    |
            --------------------------------------------------------

                                Low Latitude Paths
            ________________________________________________________
           | EXTREMELY GOOD |   |   |   |   |   |   |   |   |   |   |
           |      VERY GOOD |   |   |   |   |   |   |   |   |   |   |
CONFIDENCE |           GOOD |***|***|***|***|***|***|***|***|***|***|
  LEVEL    |           FAIR |   |   |   |   |   |   |   |   |   |   |
 -------   |           POOR |   |   |   |   |   |   |   |   |   |   |
   75%     |      VERY POOR |   |   |   |   |   |   |   |   |   |   |
           | EXTREMELY POOR |   |   |   |   |   |   |   |   |   |   |
           |----------------|---|---|---|---|---|---|---|---|---|---|
           |  PROPAGATION   |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun|
           |    QUALITY     |    Given in 8 Local-Hour Intervals    |
            --------------------------------------------------------
NOTES:
        NORTHERN HEMISPHERE                    SOUTHERN HEMISPHERE
  High latitudes >= 55      deg. N.  |   High latitudes >= 55      deg. S.
Middle latitudes >= 40 < 55 deg. N.  | Middle latitudes >= 30 < 55 deg. S.
   Low latitudes  < 40      deg. N.  |    Low latitudes  < 30      deg. S.


POTENTIAL VHF DX PROPAGATION PREDICTIONS (16 OCT - 25 OCT)
   INCLUDES SID AND AURORAL BACKSCATTER ENHANCEMENT PREDICTIONS

                   HIGH LATITUDES
 __________________________________________________      ___________________
|   NOT    | Given in 8 hour local time intervals  |    |SWF/SID ENHANCEMENT|
|AVAILABLE |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun|    |F|S|S|M|T|W|T|F|S|S|
|__________|___|___|___|___|___|___|___|___|___|___|    |-|-|-|-|-|-|-|-|-|-|
|       0% |   |   |   |   |   |   |   |   |   |   |  0%|*|*|*|*|*|*|*|*|*|*|
|      20% |   |   |   |   |   |   |   |   |   |   | 20%| | |*|*|*|*|*|*|*|*|
|      40% |   |   N O T   P R E S E N T L Y   |   | 40%| | | | | | | | | | |
|      60% |   |   |   A V A I L A B L E   |   |   | 60%| | | | | | | | | | |
|      80% |   |   |   |   |   |   |   |   |   |   | 80%| | | | | | | | | | |
|     100% |   |   |   |   |   |   |   |   |   |   |100%| | | | | | | | | | |
|==========|===|===|===|===|===|===|===|===|===|===|    |-------------------|
|     100% |   |   |   |   |   |   |   |   |   |   |100%| | | | | | | | | | |
|      80% |   |   |   |   |   |   |   |   |   |   | 80%| | | | | | | | | | |
|      60% |   |   |   |   |   |   |   |   |   |   | 60%| | | | | | | | | | |
|      40% |   |   |   |   |   |   |   |   |   |   | 40%| | | | | | | | | | |
|      20% |***|***|***|***|***|***|***|***|***|***| 20%|*|*|*| | | | | | |*|
|       0% |***|***|***|***|***|***|***|***|***|***|  0%|*|*|*|*|*|*|*|*|*|*|
|----------|---|---|---|---|---|---|---|---|---|---|    |-|-|-|-|-|-|-|-|-|-|
|CHANCE OF |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun|    |F|S|S|M|T|W|T|F|S|S|
|  VHF DX  | Given in 8 hour local time intervals  |    |AURORAL BACKSCATTER|
|__________|_______________________________________|    |___________________|


                  MIDDLE LATITUDES
 __________________________________________________      ___________________
|   NOT    | Given in 8 hour local time intervals  |    |SWF/SID ENHANCEMENT|
|AVAILABLE |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun|    |F|S|S|M|T|W|T|F|S|S|
|__________|___|___|___|___|___|___|___|___|___|___|    |-|-|-|-|-|-|-|-|-|-|
|       0% |   |   |   |   |   |   |   |   |   |   |  0%|*|*|*|*|*|*|*|*|*|*|
|      20% |   |   |   |   |   |   |   |   |   |   | 20%|*|*|*|*|*|*|*|*|*|*|
|      40% |   |   N O T   P R E S E N T L Y   |   | 40%| | | | | | | | | | |
|      60% |   |   |   A V A I L A B L E   |   |   | 60%| | | | | | | | | | |
|      80% |   |   |   |   |   |   |   |   |   |   | 80%| | | | | | | | | | |
|     100% |   |   |   |   |   |   |   |   |   |   |100%| | | | | | | | | | |
|==========|===|===|===|===|===|===|===|===|===|===|    |-------------------|
|     100% |   |   |   |   |   |   |   |   |   |   |100%| | | | | | | | | | |
|      80% |   |   |   |   |   |   |   |   |   |   | 80%| | | | | | | | | | |
|      60% |   |   |   |   |   |   |   |   |   |   | 60%| | | | | | | | | | |
|      40% |   |   |   | * | * | * | * | * | * | * | 40%| | | | | | | | | | |
|      20% |***|***|***|***|***|***|***|***|***|***| 20%|*|*|*| | | | | | | |
|       0% |***|***|***|***|***|***|***|***|***|***|  0%|*|*|*|*|*|*|*|*|*|*|
|----------|---|---|---|---|---|---|---|---|---|---|    |-|-|-|-|-|-|-|-|-|-|
|CHANCE OF |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun|    |F|S|S|M|T|W|T|F|S|S|
|  VHF DX  | Given in 8 hour local time intervals  |    |AURORAL BACKSCATTER|
|__________|_______________________________________|    |___________________|

                    LOW LATITUDES
 __________________________________________________      ___________________
|   NOT    | Given in 8 hour local time intervals  |    |SWF/SID ENHANCEMENT|
|AVAILABLE |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun|    |F|S|S|M|T|W|T|F|S|S|
|__________|___|___|___|___|___|___|___|___|___|___|    |-|-|-|-|-|-|-|-|-|-|
|       0% |   |   |   |   |   |   |   |   |   |   |  0%|*|*|*|*|*|*|*|*|*|*|
|      20% |   |   |   |   |   |   |   |   |   |   | 20%|*|*|*|*|*|*|*|*|*|*|
|      40% |   |   N O T   P R E S E N T L Y   |   | 40%| | | | | | | | | | |
|      60% |   |   |   A V A I L A B L E   |   |   | 60%| | | | | | | | | | |
|      80% |   |   |   |   |   |   |   |   |   |   | 80%| | | | | | | | | | |
|     100% |   |   |   |   |   |   |   |   |   |   |100%| | | | | | | | | | |
|==========|===|===|===|===|===|===|===|===|===|===|    |-------------------|
|     100% |   |   |   |   |   |   |   |   |   |   |100%| | | | | | | | | | |
|      80% |   |   |   |   |   |   |   |   |   |   | 80%| | | | | | | | | | |
|      60% |   |   |   |   |   |   |   |   |   |   | 60%| | | | | | | | | | |
|      40% | **| **| **| **| **| **| **| **| **| **| 40%| | | | | | | | | | |
|      20% |***|***|***|***|***|***|***|***|***|***| 20%| | | | | | | | | | |
|       0% |***|***|***|***|***|***|***|***|***|***|  0%|*|*|*|*|*|*|*|*|*|*|
|----------|---|---|---|---|---|---|---|---|---|---|    |-|-|-|-|-|-|-|-|-|-|
|CHANCE OF |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun|    |F|S|S|M|T|W|T|F|S|S|
|  VHF DX  | Given in 8 hour local time intervals  |    |AURORAL BACKSCATTER|
|__________|_______________________________________|    |___________________|

NOTES:
      These VHF DX prediction charts are defined for the 30 MHz to 220 MHz
bands.  They are based primarily on phenomena which can affect VHF DX
propagation globally.  They should be used only as a guide to potential
DX conditions on VHF bands.  Latitudinal boundaries are the same as those for
the HF predictions charts.  For more information, request the document
"Understanding Solar Terrestrial Reports" from: "Oler@Rho.Uleth.Ca" or
"COler@Solar.Stanford.Edu".  This document, as well as others and related
data and forecasts exist on the STD BBS at: (403) 756-3008.


AURORAL ACTIVITY PREDICTIONS (16 OCT - 25 OCT)

                            High Latitude Locations
            ________________________________________________________
           | EXTREMELY HIGH |   |   |   |   |   |   |   |   |   |   |
CONFIDENCE |      VERY HIGH |   |   |   |   |   |   |   |   |   |   |
  LEVEL    |           HIGH |   |   |   |   |   |   |   |   |   |   |
 -------   |       MODERATE |   | * | * |   |   |   |   |   |   | * |
   70%     |            LOW |***|***|***|***|***|***|***|***|***|***|
           |    NOT VISIBLE |***|***|***|***|***|***|***|***|***|***|
           |----------------|---|---|---|---|---|---|---|---|---|---|
           |    AURORAL     |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun|
           |   INTENSITY    |  Eve.Twilight/Midnight/Morn.Twilight  |
            --------------------------------------------------------

                          Middle Latitude Locations
            ________________________________________________________
           | EXTREMELY HIGH |   |   |   |   |   |   |   |   |   |   |
CONFIDENCE |      VERY HIGH |   |   |   |   |   |   |   |   |   |   |
  LEVEL    |           HIGH |   |   |   |   |   |   |   |   |   |   |
 -------   |       MODERATE |   |   |   |   |   |   |   |   |   |   |
   75%     |            LOW |   | * |   |   |   |   |   |   |   |   |
           |    NOT VISIBLE |***|***|***|***|***|***|***|***|***|***|
           |----------------|---|---|---|---|---|---|---|---|---|---|
           |    AURORAL     |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun|
           |   INTENSITY    |  Eve.Twilight/Midnight/Morn.Twilight  |
            --------------------------------------------------------

                             Low Latitude Locations
            ________________________________________________________
           | EXTREMELY HIGH |   |   |   |   |   |   |   |   |   |   |
CONFIDENCE |      VERY HIGH |   |   |   |   |   |   |   |   |   |   |
  LEVEL    |           HIGH |   |   |   |   |   |   |   |   |   |   |
 -------   |       MODERATE |   |   |   |   |   |   |   |   |   |   |
   90%     |            LOW |   |   |   |   |   |   |   |   |   |   |
           |    NOT VISIBLE |***|***|***|***|***|***|***|***|***|***|
           |----------------|---|---|---|---|---|---|---|---|---|---|
           |    AURORAL     |Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun|
           |   INTENSITY    |  Eve.Twilight/Midnight/Morn.Twilight  |
            --------------------------------------------------------

NOTE:
     For more information regarding these charts, send a request for the
document, "Understanding Solar Terrestrial Reports" to: "Oler@Rho.Uleth.Ca"
or to: "COler@Solar.Stanford.Edu". This document, as well as others and
related data/forecasts exist on the STD BBS at: (403) 756-3008.


**  End of Report  **
Newsgroups: sci.astro