DISCLAIMER -- THIS IS NOT AN EARTHQUAKE PREDICTION OR WARNING!
  The commentary provided with these map(s) is for INFORMATIONAL
USE ONLY, and SHOULD NOT be construed as an earthquake prediction,
warning, or advisory.  Responsibility for such warnings rests with
the Office of Emergency Services of the State of California.
PLEASE REMEMBER -- THESE ARE PRELIMINARY DATA
  Releasing these summaries on a timely basis requires that the
data, analysis, and interpretations presented are PRELIMINARY. Of
necessity they can only reflect the views of the seismologists who
prepared them, and DO NOT carry the endorsement of the U.S.G.S.
Thus while every effort is made to ensure that the information is
accurate, nothing contained in this report is to be construed as
and earthquake prediction, warning, advisory, or official policy
statement of any kind, of the U.S. Geological Survey, or the
U.S. Government.
FOR QUESTIONS CONCERNING THIS REPORT
  Send e-mail to michael@andreas.wr.usgs.gov or reply to this
message.


Seismicity Report for Northern California,
the Nation, and the World for the week of
   February 3 - 9, 1994

Data and text prepared by
  Steve Walter and Barry Hirshorn
U.S. Geological Survey
345 Middlefield Rd.  MS-977, Menlo Park, CA  94025
Graphics by Quentin Lindh
    
San Francisco Bay Area    
    
   The Bay area remained quiet for the fourth straight week.  During the
seven-day period ending at midnight on Wednesday, February 9, 1994 the
U.S. Geological Survey office in Menlo Park recorded just nine earthquakes
of magnitude one (M1) and greater within the San Francisco Bay area shown
in Figure 1. Four of these were as large as M2.  This total compares to 20
earthquakes during the previous seven-day period (Jan. 27 - Feb. 2), two
of which were as large as M2. 
   Most of the week's activity occurred to the south near the juncture of
the San Andreas and Calaveras faults.  The San Andreas itself had only one
M2 earthquake, a M2.1 last Thursday afternoon that was located about five
miles northwest of San Juan Bautista (#1 in Figure 1).  The sole M2 on the
Calaveras occurred Monday afternoon:  a M2.5 about three miles south of
Hollister (#2/1).  Except for a M1.7 southeast of San Jose later that day,
this was the only activity on the Calaveras during the week.  The
remaining M2 activity consisted of a pair of M2.1 earthquakes that
occurred early Tuesday morning along the southern Sargent fault about
three miles south of Gilroy (#3/1).
        
Northern & Central California

  The week proved to be fairly quiet throughout the rest of northern and
central California with no earthquakes as large as M3 anywhere in the
region.  The largest earthquakes were a pair of M2.9's that were part of
two separate clusters of earthquakes that occurred along the eastern
margin of the Sierra Nevada range.  The first cluster, consisting of three
M2, occurred last Friday & Saturday along the Mohawk Valley fault zone,
about 12 miles east of Quincy (#2/2).  The second cluster also occurred
during this same period but in this case the four M2 earthquakes occurred
in the northern Owens Valley area about 6 miles southeast of Bishop
(#3/2).  This second cluster appears to have been aftershock activity to a
M4.2 on February 1 (see last week's summary).   
   The San Andreas system experienced nothing larger than a M2.4, which
occurred Sunday morning on the Maacama fault about seven miles north of
Ukiah (#5/2).  Even the Cape Mendocino area was barely active at the M2
level (#4/2).  South of the Bay Area the San Andreas was quiet at the M2
level.  The only M2 earthquakes in the region were a M2.1 six miles
northeast of Coalinga (#6/2) and a M2.1 along the coast about 14 miles
northwest of San Simeon (#8/2).
  
Long Valley Caldera
   
  Caldera seismicity increased somewhat during the week with clusters of
small earthquakes occurring at both ends of the south moat area.  The most
active cluster was at the west end, two miles southeast of Mammoth Lakes
(#1/3).  Some tens of earthquakes occurred here, primarily during the
early part of the week, capped by seven earthquakes as large as M2.0. 
None of these events were reported to have been felt.  The eastern cluster
was less energetic, producing only two events as large as M2 (#2/3).  
  A couple of M2's also occurred along the southern rim of the caldera. 
The first was a M2.2 early Sunday morning that occurred east of Convict
Lake (#3/3).  It was followed the next morning by a M2.3 that occurred
just north of the lake (#5/3).  
  The week's largest event was a M2.8 Sunday morning on the Hilton Creek
fault (#4/3).  It was followed minutes later by a M2.2 aftershock.

USA Seismicity (January 31 - February 9)
  
   If northern California was quieter than normal during the past week,
southern California and the rest of the country more than made up for it. 
Aftershocks continued in the Northridge area of Los Angeles, though only
two of these were as large as M4 (#2/4).  Seismologists with the Southern
California Seismographic Network note that the Northridge sequence is
decaying normally with fewer and, on average, smaller earthquakes
occurring each week.  They warn however that one more aftershock as large
as M5 could occur during the next year.  
   Aftershock activity also continued along the Idaho/Wyoming border, the
location of a Mb5.5 shaker during the previous week.  This week's largest
aftershock was only slightly smaller than the mainshock and consequently
was widely felt in southeastern Idaho, western Wyoming, and in the Salt
Lake City, Utah area (#3/4).  Nearly forty aftershocks larger than M3.5
have been recorded by the National Earthquake Information Center during
the week and activity was continuing as of February 10.  
   Other domestic earthquakes of interest include a M4.2 on the New Madrid
seismic zone, east of Cape Girardeau, MO (#5/4), a M2.8 about 20 miles
north of Cedar City, UT (#1/4), and a M3.9 in Death Valley, CA (#4/4).   

The Planet Earth  (January 31 - February 9)
   The only strong earthquake on the planet during the week occurred along
the East African Rift Valley in western Uganda (#4/5).  At least two
people were killed and several injured by this Ms6.2 quake.  Most
buildings in the Fort Portal area were damaged.  The earthquake was felt
at Kampala, Uganda and in eastern Zaire.
    Four M4-5 earthquakes occurred along mid-ocean ridges during the week
including a Mb5.1 along the southwest Indian Ridge, a Ms5.6 along the
southeast Indian Ridge (#3/5), a Mb4.9 beneath the central mid-Atlantic
Ridge, and a Ms5.3 beneath northern Iceland, which is bisected by the
north mid-Atlantic Ridge (#6/5).   
   Other earthquakes of note include:  1) a Mb4.9 in southwestern India
that was felt in the states of Goa and Maharishtra (#1/5), 2) a Mb5.1 and
a Mb4.9 beneath northern Chile (#2/5), and 3) a Mb5.0 beneath the Peru-
Bolivia border (#5/5).

 Table 1. Northern & Central California Seismicity (M>1.0)

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ       DUR
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG

94 FEB  3  810 34.29 38 49.12 122 48.58  3.98  8   .03  .3  .8 GEY   1.1
94 FEB  3  842 39.30 40 37.58 124 17.05 18.46 10   .12 1.3  .8 EUR   1.4
94 FEB  3  920 28.91 37 38.67 118 56.26  6.87 22 3 .13  .4  .5 SMO   1.9
94 FEB  3  921 31.53 37 38.67 118 56.00  5.96 11   .08  .5  .8 SMO   1.1
94 FEB  3  933 25.10 37 38.91 118 56.69  6.39 32 3 .13  .3  .4 SMO   2.0

94 FEB  3 1014 28.22 37 38.88 118 56.12  5.08  9   .11  .6 1.2 SMO   1.0
94 FEB  3 1028 52.64 37 39.20 118 55.83  5.40 13   .15  .6 1.1 SMO   1.2
94 FEB  3 1053 58.26 37 38.29 118 55.83  6.43 13   .07  .5  .9 SMO   1.2
94 FEB  3 1104  8.25 37 38.53 118 56.29  7.02 35 3 .14  .3  .4 SMO   2.1
94 FEB  3 1104 17.91 38 48.85 122 48.49  4.40 15   .05  .3  .6 GEY   1.6

94 FEB  3 1142 23.27 37 39.20 118 55.22  0.02  7   .16  .5 1.0 SMO * 1.0
94 FEB  3 1206 47.28 37 39.31 118 55.49  6.13 12   .13  .6 1.0 SMO   1.0
94 FEB  3 1250 35.51 37 38.35 118 52.74  5.53  8   .09  .8 2.0 SMO   1.2
94 FEB  3 1521 49.09 39 54.81 123 59.22  0.08 10 1 .21 1.0 2.8 PAR * 1.4
94 FEB  3 1523 11.44 37 36.83 118 48.96  5.83  9   .12  .5 1.4 HCF   1.0

94 FEB  3 1609 34.44 37 38.90 118 56.01  5.39  7   .05  .5 1.1 SMO   1.0
94 FEB  3 1624  3.98 37 38.61 118 56.16  5.63  7   .10  .7 1.5 SMO   1.0
94 FEB  3 1741 33.50 38 47.16 122 45.05  0.39  7   .06  .3 1.1 GEY   1.6
94 FEB  3 1753 28.95 37 31.36 118 45.82  4.44  7   .02  .8  .8 WCN   1.1
94 FEB  3 1939 27.96 37 31.63 118 46.94  5.46 11   .10  .7  .9 MOR   1.3

94 FEB  3 2021  6.22 36 53.83 121 36.86  2.59 18   .15  .4  .9 SJB   2.1
94 FEB  3 2027  0.07 37 38.51 118 54.80  0.45  8   .14  .4  .8 SMO   1.0
94 FEB  3 2142 25.43 37 25.90 118 37.63 13.60 32 3 .10  .4  .8 RVL   1.7
94 FEB  3 2213 45.65 37 38.34 118 56.02  6.53  9   .07  .7 1.4 SMO   1.1
94 FEB  3 2225 56.46 37 38.29 118 56.25  6.11 30 3 .11  .3  .4 SMO   1.8

94 FEB  3 2237 40.69 37 34.21 119 58.19 28.64  9 4 .13 1.0 1.3 KAI   1.4
94 FEB  3 2237 43.31 37 38.39 118 56.33  5.86 33 3 .11  .3  .4 SMO   2.0
94 FEB  3 2238 11.70 40 16.64 124 16.90 14.64  9 1 .04  .5  .6 MEN   1.4
94 FEB  3 2240  5.19 37 38.24 118 55.80  6.07 11   .09  .5  .9 SMO   1.3
94 FEB  3 2245 10.71 37 38.35 118 55.72  5.57 14   .11  .5  .8 SMO   1.6

94 FEB  3 2252 14.33 37 38.21 118 55.97  6.42 11   .11  .7 1.0 SMO   1.3
94 FEB  3 2345 49.19 37 38.15 118 56.59  7.15  9   .10  .9 1.4 SMO   1.2
94 FEB  3 2352 11.47 37 38.37 118 56.31  6.47 10   .09  .7 1.0 SMO   1.4
94 FEB  4   57 31.08 37 38.38 118 55.95  6.50 11   .11  .6 1.1 SMO   1.2
94 FEB  4  103 42.86 37 38.37 118 55.92  7.10  9   .08  .9 1.2 SMO   1.1

94 FEB  4  209 47.48 37 38.44 118 56.38  8.41 10   .19 1.0 2.1 SMO   1.4
94 FEB  4  214 12.47 37 39.26 118 55.98  6.76  7   .11 1.1 2.8 SMO   1.3
94 FEB  4  217 32.19 37 38.91 118 55.26  7.14 12   .14  .6 1.1 SMO   1.3
94 FEB  4  223 37.22 37 38.67 118 55.81  5.86 15   .14  .5 1.0 SMO   1.6
94 FEB  4  235 46.84 37 38.60 118 55.99  6.56 21   .15  .4  .7 SMO   1.9

94 FEB  4  239 26.26 37 38.58 118 55.80  5.70 16   .13  .4  .9 SMO   1.6
94 FEB  4  305 15.47 37 38.41 118 55.95  6.26 16   .10  .4  .8 SMO   1.5
94 FEB  4  308 35.16 37 38.87 118 56.03  6.97 11   .11  .8 1.2 SMO   1.4
94 FEB  4  315 10.85 37 38.70 118 55.34  6.49  7   .12  .7 1.9 SMO   1.2
94 FEB  4  335 48.83 37 38.10 118 55.82  1.02 10   .20  .6 1.6 SMO   1.3

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ       DUR
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG

94 FEB  4  403 43.38 37 38.37 118 56.28  6.77 21   .16  .4  .8 SMO   1.9
94 FEB  4  404 13.61 37 38.71 118 55.91  6.62 14   .11  .6  .8 SMO   1.7
94 FEB  4  412 28.89 37 37.73 118 55.62  7.31 11   .14  .8 1.0 SMO   1.0
94 FEB  4  423 10.85 37 39.37 118 55.61  7.22  8   .08  .7 1.0 SMO   1.4
94 FEB  4  426 17.31 37 38.68 118 55.40  5.97 12   .15  .6  .9 SMO   1.2

94 FEB  4  507  0.90 37 38.62 118 56.32  6.26 10   .07  .7  .8 SMO   1.0
94 FEB  4  509 41.18 37 39.05 118 55.96  9.49  8   .19 1.9 3.4 SMO   1.1
94 FEB  4  514 48.88 37 38.82 118 55.75  6.79 14   .12  .5  .8 SMO   1.3
94 FEB  4  544  5.57 37 38.49 118 55.85  5.10 18   .18  .6 1.0 SMO   1.8
94 FEB  4  547 20.16 37 38.74 118 55.59  6.42 17   .09  .4  .7 SMO   1.8

94 FEB  4  554 13.66 37 38.95 118 55.61  7.84 12   .10  .6 1.0 SMO   1.2
94 FEB  4  602 13.40 37 38.43 118 55.59  6.94 10   .13  .7 1.4 SMO   1.0
94 FEB  4  626 37.72 37 38.78 118 55.52  6.92  7   .11  .9 1.4 SMO   1.0
94 FEB  4  627 51.13 37 38.83 118 55.62  7.12 16   .16  .6 1.1 SMO   1.5
94 FEB  4  640 38.42 37 38.22 118 55.89  7.43  8   .10  .7 1.2 SMO   1.3

94 FEB  4  803 31.41 37 38.49 118 56.46  6.56 34 2 .14  .3  .5 SMO   2.2
94 FEB  4  858  5.32 38 47.48 122 27.50  7.63  8   .08  .4  .7 GVL   1.2
94 FEB  4  905 22.38 37 38.70 118 55.36  6.96 13   .11  .5 1.0 SMO   1.4
94 FEB  4  911  7.50 37 38.42 118 56.24  6.40 25   .19  .5  .7 SMO   2.0
94 FEB  4  917 53.16 37 38.31 118 54.89  5.48 10   .12  .5 1.2 SMO   1.4

94 FEB  4  918 23.92 37 38.60 118 55.07  0.87  8   .19  .4  .7 SMO   1.8
94 FEB  4  927 42.05 37 38.71 118 55.79  6.38 14   .14  .6  .9 SMO   1.8
94 FEB  4 1019 45.06 36 44.13 121 12.21  7.61 15   .08  .4  .6 PAI   1.5
94 FEB  4 1025  4.24 37 38.34 118 48.89  4.18 34 1 .13  .3  .5 HCF   2.3
94 FEB  4 1126  8.38 37 38.09 118 55.93  6.42 10   .13  .9 1.1 SMO   1.0

94 FEB  4 1248  0.31 37 38.48 118 56.32  6.23 18   .12  .5  .7 SMO   2.1
94 FEB  4 1318 14.21 38 21.22 122 24.15  8.09 31 2 .20  .4  .8 NAP   2.1
94 FEB  4 1359 48.23 38 47.64 122 45.82  1.37  8   .03  .3  .7 GEY   1.3
94 FEB  4 1420 11.66 38 47.43 122 44.55  2.11 15   .12  .3  .8 GEY   1.9
94 FEB  4 1500 49.92 37 36.50 118 48.84  5.79 13   .13  .5  .9 HCF   1.7

94 FEB  4 1528 49.15 37 17.24 118 21.01  6.16  8   .05  .4 1.7 OWV   1.7
94 FEB  4 1737  8.78 38 48.19 122 27.51  7.47  8   .10  .6  .8 GVL   1.0
94 FEB  4 1919 27.15 37 38.21 118 55.80  6.60 13   .15  .6 1.1 SMO   1.3
94 FEB  4 1927 27.43 36  0.37 120 33.11  6.10  7   .05  .7 1.4 SLA   1.1
94 FEB  4 1933  2.50 38 51.51 122 49.77  1.73  8   .05  .5  .9 GEY   1.0

94 FEB  4 1941 12.21 37 36.14 118 49.03  5.13 23   .11  .3  .5 HCF   1.7
94 FEB  4 1944  2.76 39 56.29 120 42.45  1.35 26   .16 1.214.4 WAK - 2.9
94 FEB  4 2031 58.51 37 38.52 118 54.79  6.63  9   .19 1.3 1.7 SMO   1.1
94 FEB  4 2035 33.88 37 38.35 118 55.77  6.42 16   .12  .6  .6 SMO   2.0
94 FEB  4 2038 57.33 37 38.59 118 55.55  7.87 12   .18  .9 1.8 SMO   1.5

94 FEB  4 2039 57.66 37 39.03 118 54.70  7.03 11   .18  .9 1.7 DOM   1.6
94 FEB  4 2047 21.66 38 47.87 122 47.54  0.80  7   .05  .3  .6 GEY   1.0
94 FEB  4 2048 45.36 37 38.83 118 55.52  7.01 13   .13  .8 1.0 SMO   1.3
94 FEB  4 2049 58.48 37 38.53 118 55.63  6.81 18   .14  .5 1.0 SMO   1.9
94 FEB  4 2055 14.21 37 38.54 118 55.49  4.62  7   .11  .8 2.7 SMO   1.0

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ       DUR
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG

94 FEB  4 2136 23.90 37 38.55 118 55.69  6.22 17   .14  .5  .8 SMO   2.0
94 FEB  4 2141 44.19 37 38.62 118 55.78  6.16  9   .15 1.0 1.5 SMO   1.0
94 FEB  4 2154 24.60 37 32.94 118 26.60  6.80  7   .07  .6  .6 CHV   1.4
94 FEB  4 2203  6.40 37 38.67 118 55.80  6.34 19   .14  .5  .7 SMO   1.8
94 FEB  4 2204 11.97 37 39.38 118 55.53  8.73 13   .10  .8 1.2 SMO   1.3

94 FEB  4 2219 24.07 37 39.23 118 55.10  7.56  9   .12  .9 1.3 DOM   1.1
94 FEB  4 2221 42.91 37 25.49 118 32.79 15.71  9   .06  .6 1.9 CHA   1.1
94 FEB  4 2246 57.98 37 37.47 118 55.91  7.75  8   .08  .7 1.0 SMO   1.0
94 FEB  5    7 53.72 37 38.27 118 55.88  6.55 10   .07  .4 1.0 SMO   1.3
94 FEB  5   44 50.93 37 17.47 118 20.52  9.52 10   .10  .6 1.5 OWV   1.7

94 FEB  5   49 41.76 37 38.35 118 55.91  7.13 11   .13  .6 1.2 SMO   1.2
94 FEB  5  133 44.70 37 34.58 118 51.14  9.20 19   .15  .4  .9 MOR   1.6
94 FEB  5  158 17.57 37 34.62 118 50.90  8.42 20   .17  .5  .9 MOR   1.4
94 FEB  5  303 29.23 38 55.73 122 42.16  1.71 15   .08  .3  .7 KON   1.9
94 FEB  5  324 12.43 37 38.57 118 56.21  6.45 24   .19  .5  .8 SMO   2.3

94 FEB  5  328  2.72 37 38.34 118 56.51  9.58 12   .10  .6 1.7 SMO   1.0
94 FEB  5  334 38.01 37 38.66 118 55.07  7.34 10   .11  .5 1.2 SMO   1.2
94 FEB  5  335 38.29 37 38.74 118 55.59  6.33 16   .13  .5  .8 SMO   1.6
94 FEB  5  438 11.90 37 38.37 118 55.41  8.40 13   .21  .9 1.6 SMO   1.3
94 FEB  5  453 42.83 37 26.07 118 33.05  9.33  8   .07  .5 1.8 RVL   1.2

94 FEB  5  501 53.56 37 32.60 118 25.53  7.59  8   .04  .6  .5 CHV   1.4
94 FEB  5  514 42.18 37 38.59 118 55.49  7.06 12   .11  .5 1.1 SMO   1.1
94 FEB  5  535  6.48 37 38.81 118 55.27  7.92 12   .10  .6 1.1 SMO   1.2
94 FEB  5  619  0.01 37 38.55 118 55.47  6.98 15   .14  .5 1.1 SMO   1.6
94 FEB  5  620 16.88 37 38.07 118 55.57  9.70  8   .08  .8 1.4 SMO   1.0

94 FEB  5  658 49.85 37 17.04 118 21.18  8.82 27   .09  .4  .9 OWV   2.6
94 FEB  5  700 51.46 37 17.16 118 20.95  8.91 29   .09  .4 1.0 OWV   2.8
94 FEB  5  720 55.51 37 36.41 118 48.88  5.04  7   .15  .7 1.9 HCF   1.0
94 FEB  5  743 51.46 37 38.58 118 56.12  3.93  8   .10  .5 1.4 SMO   1.0
94 FEB  5  758  6.83 37 38.30 118 56.11  7.70  9   .08  .9 1.4 SMO   1.0

94 FEB  5  805 50.27 37 38.62 118 55.64  7.83 11   .11  .6 1.2 SMO   1.0
94 FEB  5  819 11.10 37 38.89 118 55.72  7.00 12   .11  .6 1.0 SMO   1.4
94 FEB  5  903 23.85 37 17.21 118 21.21  3.47 15   .12  .4 1.7 OWV   2.0
94 FEB  5  939 55.27 37 39.27 118 56.05  8.80  8   .14 1.3 2.0 SMO   1.0
94 FEB  5  940 36.91 37 17.26 118 20.95  7.17  8   .06 1.2 2.1 OWV   1.7

94 FEB  5  949 16.44 35 36.75 118 14.37 13.08  7   .14  .9 2.2 WWF   1.6
94 FEB  5 1021 30.25 38 49.75 122 45.55  0.61  8   .06  .3 1.1 GEY   1.2
94 FEB  5 1049 33.53 38 49.52 122 49.73  1.32  9   .05  .3  .8 GEY   1.0
94 FEB  5 1102 47.30 38 50.00 122 49.83  2.48  7   .02  .5  .9 GEY   1.4
94 FEB  5 1152 31.34 38 46.22 122 42.79  0.99 10   .12  .6  .4 GEY   1.5

94 FEB  5 1224 27.31 38 47.13 122 28.25  7.07  9   .13  .6 1.1 GVL   1.7
94 FEB  5 1441 23.14 37 34.51 118 51.24  8.22 17   .12  .5  .8 MOR   1.4
94 FEB  5 1511 22.71 38 47.10 122 46.26  1.25 20   .12  .3 1.1 GEY   2.3
94 FEB  5 1515  8.74 37 38.69 118 55.37  4.95 12   .12  .5 1.0 SMO   1.4
94 FEB  5 1547 28.63 38 46.20 122 44.00  1.62 13   .10  .3  .6 GEY   1.7

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ       DUR
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG

94 FEB  5 1547 56.76 37 38.62 118 55.54  5.26 12   .11  .4  .9 SMO   1.3
94 FEB  5 1726 20.95 37 38.26 118 55.43  5.95 16   .13  .5  .8 SMO   1.5
94 FEB  5 1729  8.60 37 38.44 118 54.92  2.01  9   .21  .6 1.3 SMO   1.2
94 FEB  5 1802 36.42 37 39.07 118 55.80  7.98 14   .10  .6 1.1 SMO   2.4
94 FEB  5 1808 38.64 37 39.35 118 56.26  9.86 10   .09 1.2 2.1 SMO   1.1

94 FEB  5 1809 24.28 37 38.72 118 55.37  7.56 10   .10  .6 1.2 SMO   1.3
94 FEB  5 1821 59.65 40 14.06 124  7.56 13.19  7   .14  .9 1.0 MEN   2.0
94 FEB  5 1851 21.13 37 38.69 118 55.86  5.63  8   .06  .6 1.1 SMO   1.2
94 FEB  5 2031 51.34 37 38.78 118 56.11  7.82  8   .12 1.0 2.3 SMO   1.0
94 FEB  5 2207 18.68 38 46.89 122 42.98  2.85  8   .10  .6 1.0 GEY   1.2

94 FEB  5 2356 20.04 37 38.96 118 52.67  6.51  9   .09  .6 1.0 SMO   1.5
94 FEB  6  131 34.07 37 38.57 118 55.74  6.77 17   .17  .6 1.0 SMO   1.8
94 FEB  6  132  2.57 37 38.50 118 55.72  7.73 11   .09 1.0 1.1 SMO   1.3
94 FEB  6  306 16.26 37 33.43 118 29.41 12.44 14   .08  .4 1.3 CHV   1.9
94 FEB  6  400 59.77 37 25.45 118 32.87 16.20  8   .14  .8 2.9 CHA   1.3

94 FEB  6  507  8.57 38 49.91 122 49.47  2.04 18   .10  .3  .8 GEY   2.1
94 FEB  6  523 15.18 39 55.80 120 43.30  5.01 18   .23 1.917.8 WAK - 2.5
94 FEB  6  549 21.50 39 56.20 120 43.76  0.00 22   .21 1.4 3.4 WAK * 2.6
94 FEB  6  651 11.71 37 38.99 118 55.68  7.92 13   .11  .6 1.0 SMO   1.2
94 FEB  6  739 53.74 38 46.60 122 45.11  2.08  9   .03  .3  .7 GEY   1.2

94 FEB  6 1041  7.64 37 35.35 118 49.16  6.24 22   .16  .4  .7 MOR   1.9
94 FEB  6 1300 29.90 38 49.95 122 52.72  1.13 10   .05  .3  .9 GEY   1.3
94 FEB  6 1326  3.95 39 14.65 123 13.02  5.80 23   .11  .3 1.4 MAA   2.4
94 FEB  6 1440 13.65 37 35.40 118 49.39  6.38 26   .15  .4  .7 MOR   2.2
94 FEB  6 1700 37.39 37 33.22 118 46.94  2.42 29   .12  .3  .8 MOR   2.8

94 FEB  6 1701 54.52 37 32.84 118 47.06  2.71 14   .14  .5  .9 MOR   1.7
94 FEB  6 1706 31.30 37 33.25 118 46.67  2.24 23   .12  .3  .8 MOR   2.2
94 FEB  6 2039 40.92 37 17.11 118 21.02  9.08 28   .09  .5 1.0 OWV   2.9
94 FEB  6 2055 22.67 37 38.61 118 53.66 10.53 10   .11  .8 1.8 SMO   1.1
94 FEB  7  235 35.95 37 38.11 118 49.02  3.50 29   .14  .3  .7 HCF   2.3

94 FEB  7  241 31.21 37 38.43 118 48.60  3.53 10   .13  .5 1.2 HCF   1.8
94 FEB  7  308 33.30 37 38.42 118 48.61  3.21 13   .13  .4 1.0 HCF   1.6
94 FEB  7  314  6.53 37 33.38 121 40.00  8.20 14   .10  .4  .7 HAM   1.4
94 FEB  7  437 45.92 36 10.13 120 16.31  8.56 24   .19  .5 1.2 COA   2.1
94 FEB  7  720 35.04 38 49.47 122 47.87  3.92  7   .01  .4  .8 GEY   1.2

94 FEB  7  840 12.98 41 14.06 122 11.29  4.89  7   .17 1.013.0 SHA - 1.8
94 FEB  7 1018 51.60 38 47.22 122 45.54  1.73  8   .06  .3  .9 GEY   1.3
94 FEB  7 1240  7.83 38 47.70 122 44.55  0.86  7   .08  .3 1.2 GEY   1.1
94 FEB  7 1448 10.02 37 30.85 118  0.18  4.64 17   .13 3.6 4.8 WHI   2.3
94 FEB  7 1514 22.16 37 36.79 118 51.63  4.84 27   .15  .3  .5 SMO   2.3

94 FEB  7 1516 49.09 37 37.15 118 50.62  6.60  7   .06  .6 1.1 SMO   1.0
94 FEB  7 1811 57.62 37 37.04 118 51.04  4.67 12 1 .13  .4  .9 SMO   1.5
94 FEB  7 1837  0.13 38 49.26 122 46.54  1.97 10   .04  .3  .6 GEY   1.4
94 FEB  7 1903 57.61 38 47.62 122 45.38  0.51 16   .10  .3  .7 GEY   1.7
94 FEB  7 2007 38.22 36 48.38 121 23.51  6.13 73   .20  .3  .6 HOL   2.5

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ       DUR
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG

94 FEB  8  121 17.41 37 36.96 118 51.19  4.27 15 1 .13  .4  .7 SMO   1.7
94 FEB  8  128 37.07 35 49.42 121 19.16  0.07 16   .16 1.0 4.8 SSM * 2.1
94 FEB  8  210 51.29 37 36.01 118 48.92  5.52 18   .12  .4  .6 HCF   1.8
94 FEB  8  216  8.50 37 17.18 121 40.09  2.04 27   .04  .2  .5 SFL   1.7
94 FEB  8  400 46.39 37 33.42 118 46.76  1.99 10   .12  .4 1.0 MOR   1.4

94 FEB  8  404 44.34 37 39.30 118 56.18  4.72 10   .15  .7 1.1 SMO   1.3
94 FEB  8  810 18.71 37 38.64 118 56.79  8.24 16 1 .11  .5 1.0 SMO   1.4
94 FEB  8  829 48.71 36 57.44 121 34.25  6.11 57   .19  .3  .6 SAR   2.1
94 FEB  8 1015 22.82 39 55.60 122 52.30  6.24  9   .26  .7 3.3 SAC * 2.0
94 FEB  8 1242 38.88 38 57.50 122 37.07  2.18  8   .03  .4 1.0 BAR   1.4

94 FEB  8 1347 47.31 37 38.27 118 53.02  9.52  7 1 .12  .8 2.2 SMO   1.0
94 FEB  8 1359 50.84 36 56.23 121 33.79  6.24 52   .19  .3  .6 SAR   2.1
94 FEB  8 1403 53.84 37 36.45 118 48.88  5.48 11   .13  .5  .9 HCF   1.6
94 FEB  8 1538 12.37 37 36.49 118 49.85  7.86  7 1 .14 1.3 2.7 SMO   1.0
94 FEB  8 1548 26.80 37 27.65 118 35.73 13.57  8   .07  .9 1.8 RVL   1.3

94 FEB  8 1831 41.87 37 28.49 118 37.86  6.18  9 2 .03  .3  .8 RVL   1.2
94 FEB  8 2045 39.81 37 28.39 118 48.44 10.63 12 1 .09  .6 1.2 MOR   1.2
94 FEB  8 2056 45.59 37 39.90 118 51.87  3.45 12   .17  .5 1.7 DOM   1.4
94 FEB  8 2248 16.21 37 38.07 118 57.74  8.92 20   .14  .5  .8 SMO   1.9
94 FEB  8 2358 23.71 38 50.48 122 49.01  2.66  9   .09  .3 1.1 GEY   1.2

94 FEB  9  217 18.19 37 38.39 118 57.11  7.74 12   .10  .5 1.2 SMO   1.5
94 FEB  9  532 14.84 38 50.05 122 47.65  1.14 17   .05  .2  .8 GEY   2.1
94 FEB  9  533 54.41 38 49.91 122 48.03  0.88  8   .03  .3  .8 GEY   1.1
94 FEB  9  539 32.63 38 49.80 122 47.98  0.92 22   .14  .3  .8 GEY   2.1
94 FEB  9  540 21.69 38 49.37 122 49.75  0.03  7   .15  .7 2.1 GEY * 1.0

94 FEB  9  606  6.44 37 36.41 118 48.81  5.72 10   .13  .6 1.2 HCF   1.2
94 FEB  9  753 25.32 37 29.64 121 32.98  7.40  9   .10  .4 1.2 HAM   1.3
94 FEB  9  804  4.50 39 22.80 123  7.97  1.75 11   .11  .510.6 MAA - 1.7
94 FEB  9 1031  7.12 36 57.94 121 42.71  6.79 20   .09  .3  .8 SJB   1.5
94 FEB  9 1315 41.61 37 38.55 118 52.48  7.47  9   .15  .8 2.2 SMO   1.1

94 FEB  9 1412 44.59 37 38.47 118 54.91  3.79  7 1 .04  .4 1.1 SMO   1.1
94 FEB  9 1513 58.05 37 38.41 118 49.85  7.92 10 1 .14  .6 1.7 HCF   1.2
94 FEB  9 1518 35.44 37 38.72 118 50.01  8.53 10   .09  .5 1.1 HCF   1.4
94 FEB  9 1533 43.90 37 34.91 118 50.78  7.84 12 1 .13  .5 1.3 MOR   1.4
94 FEB  9 1600 45.65 37 38.21 118 49.96  8.48  9 1 .13  .5 1.2 HCF   1.2

94 FEB  9 1748 25.74 37 38.49 118 56.29  9.39  7 1 .09 1.0 1.9 SMO   1.0
94 FEB  9 1810 24.39 37 38.82 118 55.58  7.62 14   .12  .5 1.0 SMO   1.3
94 FEB  9 1835 50.27 38 47.54 122 46.63  1.78  8   .07  .4  .7 GEY   1.1
94 FEB  9 1915 36.96 37 38.31 118 50.16  8.59 14   .11  .4  .9 HCF   1.5
94 FEB  9 1917 34.14 37 37.61 118 48.83  5.05  7 1 .12  .6 1.9 HCF   1.0

94 FEB  9 2054 51.28 38 48.09 122 47.00  0.88  7   .01  .3 1.8 GEY   2.2
94 FEB  9 2130 27.71 37 39.46 118 48.72 13.77  8   .07 2.1 2.5 HCF   1.1
94 FEB  9 2147  9.64 40 24.99 124 21.64 10.88 13   .07  .6  .3 MEN   2.1
94 FEB  9 2249 21.22 38 47.73 122 46.21  1.43  8   .07  .3  .8 GEY   1.1
94 FEB  9 2315 48.24 37 38.48 118 56.33  5.31  9 2 .14  .7 1.4 SMO   1.2

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ       DUR
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG

94 FEB  9 2350 29.25 37 38.79 118 55.58  4.70 11   .16  .6 1.5 SMO   1.2
94 FEB 10  110  4.42 37 36.11 118 49.08  5.28 10 1 .09  .5  .9 HCF   1.2
94 FEB 10  306 48.39 37 37.73 118 51.99  7.18 13   .15  .5 1.1 SMO   1.4
94 FEB 10  312 41.76 37 38.06 118 51.97  7.30 14 1 .14  .5  .9 SMO   1.3
94 FEB 10  407 23.37 36 28.04 121  2.48  5.33 10   .05  .5 1.1 BIT   1.3

94 FEB 10  424 31.37 37 37.80 118 50.96  5.49  8   .17  .7 1.6 SMO   1.0
94 FEB 10  427 24.13 38 48.22 122 48.08  3.01 10   .06  .3  .6 GEY   1.2
94 FEB 10  445 20.45 37 38.98 118 52.40  6.85  8 1 .07  .8  .9 SMO   1.0
94 FEB 10  514 47.03 38 48.20 122 47.96  1.39  9   .04  .3  .4 GEY   1.2
94 FEB 10  521  5.72 37 37.58 118 51.68  3.47  9   .11  .5 1.7 SMO   1.1

94 FEB 10  529 11.84 37 38.06 118 52.42  7.80 20   .13  .4  .7 SMO   1.7
94 FEB 10  539 31.16 37 38.05 118 51.92  7.89  9   .14  .7 1.6 SMO   1.1
94 FEB 10  607 57.96 38 50.46 122 48.64  2.34  9   .05  .3  .9 GEY   1.3
94 FEB 10  721 28.51 38 49.94 122 49.67  1.67 12   .07  .3  .8 GEY   1.7
94 FEB 10  724 38.39 38 49.93 122 49.24  0.01 12   .11  .4 2.9 GEY * 2.1

94 FEB 10  727 35.57 38 50.03 122 49.68  1.13  9   .05  .4  .8 GEY   1.4

     TABLE 2.
Data from National Earthquake Information Center (NEIC)

UTC TIME    LAT     LONG    DEP GS MAGS  SD STA  REGION AND COMMENTS
HRMNSEC                         MB  Msz     USED
--------------------------------------------------------------------------------
JAN 31
023615.3*  7.587S  73.844W  33N 4.6     1.1  20 PERU-BRAZIL BORDER REGION
095735.2? 37.40 S  52.19 E  10G 5.1 4.8 1.2  27 SOUTH INDIAN OCEAN
111006.4  33.776N 135.538E  64* 4.8     0.4  17 NEAR S. COAST OF WESTERN HONSHU
123935.8  38.103N 113.116W   1G         0.9  12 UTAH. ML 2.8 (GS).

FEB 01
044703.9& 57.810N 152.470W  36  3.8          58 KODIAK ISLAND REGION. ML 3.6
061200.9* 53.447N 160.397E  33N 4.7     1.0  28 NEAR EAST COAST OF KAMCHATKA
074019.9& 34.232N 118.623W   3               45 SOUTHERN CALIFORNIA.  MD 3.6
093055.7* 17.292N  73.587E  10G 4.9     1.3  28 SOUTHERN INDIA. Felt in the
        states of Goa and Maharashtra. Also felt in northern Karnataka.
095814.0  42.760N 111.071W   5G         0.9  37 EASTERN IDAHO. ML 3.5 (GS)
162938.3? 21.41 S  70.19 W  52D 5.1     1.3  17 NEAR COAST OF NORTHERN CHILE
173335.5*  4.073N  32.620W  10G 4.9 4.4 1.5  35 CENTRAL MID-ATLANTIC RIDGE

FEB 02
010958.6  10.083S 161.011E  89D 5.1     0.6  55 SOLOMON ISLANDS
025410.9  13.636S 171.399E 500G 4.8     0.8  84 VANUATU ISLANDS REGION
050358.3? 22.22 S  66.51 W 243? 4.5     0.9  32 JUJUY PROVINCE, ARGENTINA
101208.1? 43.88 N  12.52 E  10G 3.8     1.2  16 CENTRAL ITALY. ML 3.8 (VIE).
110425.2  42.752N 111.070W   5G         0.9  40 EASTERN IDAHO. ML 4.0 (GS)
112437.8& 34.292N 118.610W   1               47 SOUTHERN CALIFORNIA.  MD 3.7
120925.2  61.054N 140.054W   5G 4.1     1.3  97 SOUTHERN YUKON TERRITORY,
        CANADA. ML 4.4 (AEIC), 4.5 (PMR).
162007.7? 36.66 N  71.85 E  33N 4.6     1.0  14 AFGHANISTAN-TAJIKISTAN BORD REG.
180339.6% 36.525N   2.801W  10G         1.1  21 STRAIT OF GIBRALTAR. mbLg 4.1
231117.3* 14.365N  92.822W  33N 4.8     1.1  39 NEAR COAST OF CHIAPAS, MEXICO

FEB 03
014952.9* 43.376N 111.018W   5G         0.9   8 EASTERN IDAHO. ML 2.7 (GS).
015235.6* 43.391N 111.019W   5G         1.0   7 EASTERN IDAHO. ML 2.6 (GS).
022523.5  12.096S 166.999E 282D 5.0     0.6  75 SANTA CRUZ ISLANDS
094533.0* 42.709N 111.083W   5G         0.6   8 EASTERN IDAHO. ML 3.5 (GS).
094736.9  42.732N 111.037W   5G         0.9   9 EASTERN IDAHO. ML 4.0 (GS).
095840.7  42.762N 111.048W   5G         1.0  21 EASTERN IDAHO. ML 4.2 (GS).
101303.9  42.783N 110.956W   5G         0.6  14 WYOMING. ML 3.7 (GS).
102331.5  15.431S 166.942E  33N 5.3     1.1  45 VANUATU ISLANDS
102551.9  42.792N 111.123W   5G         0.6  16 EASTERN IDAHO. ML 4.0 (GS).
103128.7* 42.789N 111.178W   5G         0.7   9 EASTERN IDAHO. ML 3.6 (GS).
104015.6  42.765N 111.003W   5G         0.8  15 EASTERN IDAHO. ML 3.9 (GS).
111907.5  42.778N 111.019W   5G 4.4     1.0  57 EASTERN IDAHO. ML 4.7 (GS). Felt
                                                in the epicentral area.
114650.9  42.798N 111.161W   5G         1.0  16 EASTERN IDAHO. ML 4.0 (GS).
114920.6* 42.877N 110.955W   5G         0.9   9 WYOMING. ML 3.9 (GS).
120457.0  42.722N 111.098W   5G         0.9  30 EASTERN IDAHO. ML 4.4 (GS).
131336.8  42.766N 111.020W   5G         0.7  11 EASTERN IDAHO. ML 3.7 (GS).
153439.7  42.747N 111.069W   5G 4.6     1.4  13 EASTERN IDAHO. ML 3.6 (GS).
154344.2* 41.880S  84.717E  10G 5.0 5.6 0.5   9 SOUTHEAST INDIAN RIDGE
162334.4  34.267N 118.479W  10G 3.9     0.8  54 SOUTHERN CALIFORNIA. ML 4.2
171950.9* 42.784N 110.972W   5G         0.6  12 WYOMING. ML 3.5 (GS).
191340.5  42.822N 111.158W   5G         0.8  13 EASTERN IDAHO. ML 3.9 (GS).
225738.3  42.688N 111.041W   5G         0.8  13 EASTERN IDAHO. ML 3.5 (GS).

FEB 04
001009.6  36.491N 116.949W  10G         1.4  49 CALIFORNIA-NEVADA BORDER REGION.
        ML 3.9 (GS). Felt at Amargosa Valley and Death Valley.
024212.0  42.721N 111.018W   5G 4.8     1.1  49 EASTERN IDAHO. ML 5.2 (GS). Felt
        at Blackfoot, Idaho Falls, Lava Hot Springs, Ovid, Pocatello and Soda
        Springs, Idaho. Also felt at Freedom, Wyoming and Salt Lake City, Utah.
031008.4  42.835N 111.099W   5G         0.7  20 EASTERN IDAHO. ML 4.0 (GS).
053244.0  42.733N 111.197W   5G         0.8  16 EASTERN IDAHO. ML 3.6 (GS).
063338.8  34.258N 118.640W  10G         0.8  42 SOUTHERN CALIFORNIA. ML 3.7
070559.0  42.657N 111.045W   5G         0.9  15 EASTERN IDAHO. ML 3.6 (GS).
083018.7  42.728N 111.028W   5G         0.7  17 EASTERN IDAHO. ML 3.4 (GS).
142605.3  34.270N 118.419W  10G         0.7  41 SOUTHERN CALIFORNIA. ML 3.4
150332.9  42.813N 111.123W   5G         0.9  14 EASTERN IDAHO. ML 3.5 (GS).
165034.3  42.749N 111.063W   5G         0.4  18 EASTERN IDAHO. ML 3.9 (GS).
                                                Felt.
184933.7  42.751N 111.070W   5G         0.6  13 EASTERN IDAHO. ML 3.6 (GS).
193355.3  42.684N 111.059W   5G         1.2  14 EASTERN IDAHO. ML 3.5 (GS).
201551.1  34.286N 118.448W  10G         0.9  36 SOUTHERN CALIFORNIA. ML 3.1
210611.1* 21.774S  68.301W 122D 4.9     0.9  21 CHILE-BOLIVIA BORDER REGION
213525.0  42.826N 111.088W   5G         0.7  14 EASTERN IDAHO. ML 3.6 (GS).
214912.1  42.624N 111.066W  10G 4.2     1.4  17 EASTERN IDAHO. ML 4.0 (GS).
                                                Felt.
FEB 05
070602.1  42.605N 110.949W   5G 4.1     0.9  21 WYOMING. ML 4.2 (GS).
085104.8  34.307N 118.691W  10G         0.9  44 SOUTHERN CALIFORNIA. ML 3.9
090407.1  42.815N 111.130W   5G         0.6  12 EASTERN IDAHO. ML 3.9 (GS).
090943.3  42.731N 111.041W   5G 4.0     1.1  23 EASTERN IDAHO. ML 4.2 (GS).
103848.6  42.681N 111.063W   5G 4.1     0.9  20 EASTERN IDAHO. ML 4.1 (GS).
145534.9  37.503N  89.072W  10G 4.2     1.2  12 CAPE GIRARDEAU, MISSOURI 
        REGION. Felt in southern Illinois and southeastern Missouri.
222857.3  42.743N 111.073W   5G         0.7  13 EASTERN IDAHO. ML 3.6 (GS).
233408.6   0.561N  30.223E  10G 5.8 6.2 0.8  72 UGANDA. Mw 6.4 (GS), 6.2 (HRV).
        At least two people killed, several injured and most buildings damaged
        in the Fort Portal area, Uganda. Two people killed by landslides at
        Kasese, Uganda. Felt at Kampala, Uganda and in eastern Zaire. 

FEB 06
032809.4* 51.870N 170.065W  33N 4.6     0.8  17 FOX ISLANDS, ALEUTIAN ISLANDS
085948.1? 13.25 S 166.88 E 209D 4.9     0.7  21 VANUATU ISLANDS
102021.5  16.173S  69.142W 174D 5.0     0.5  68 PERU-BOLIVIA BORDER REGION
131924.9  34.235N 118.536W  10G         0.7  30 SOUTHERN CALIFORNIA. ML 4.1
132144.3  34.266N 118.514W  10G         0.5  38 SOUTHERN CALIFORNIA. ML 3.6
164651.1  42.743N 111.069W   5G         0.9  14 EASTERN IDAHO. ML 3.6 (GS).

FEB 07
063547.2  42.662N 111.034W   5G 4.5     0.9  31 EASTERN IDAHO. ML 4.8 (GS). Felt
                                                at Afton, Wyoming.
103711.9  42.755N 111.007W   5G         0.8  16 EASTERN IDAHO. ML 3.5 (GS).
121545.4  42.696N 111.027W   5G 3.9     0.8  24 EASTERN IDAHO. ML 4.5 (GS). Felt
                                                at Afton, Wyoming.
164315.6  42.667N 111.138W   5G         0.8  14 EASTERN IDAHO. ML 3.5 (GS). 

FEB 08
032754.8  66.564N  19.255W  10G 5.2 5.3 0.8  62 ICELAND REGION

FEB 10
005611  Q 42.8  N 111.1  W  10G 4.5     0.6  17 EASTERN IDAHO

Notes: Origin time in the list is in GMT, in the text and on maps
       it is in local time.
       N RD: is the number of readings used to locate the event.
       N S: is the number of S waves in N RD.
       RMS SEC: is the root mean squared residual misfit for the
                location is seconds, the lower the better, over 0.3
                to 0.5 seconds is getting bad, but this is machine,
                not hand timed, data.
       ERH: is the estimated horizontal error in kilometers.
       ERZ: is the estimated vertical error in kilometers.
       N FM: is the number of readings used to compute the magnitude.
       REMKS: obtuse region codes that denote the velocity model
              used to locate the event.
       DUR MAG: is the magnitude as determined from the duration of
                the seismograms, not the amplitude.  Sort of like
                going to echo canyon and measuring how loud your
                yell is by counting echos.
       FIG: denotes the figure/event number in the maps posted separately.