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- April 20, 1995
-
- Weekly Earthquake Report for Southern California
- ------------------------------------------------
- April 13 - 19, 1995
-
- Prepared by: Kate Hutton, Seismological Laboratory
- (kate@bombay.gps.caltech.edu)
- Lucy Jones, U.S. Geological Survey
- California Institute of Technology
-
- For further information, please contact the authors or the
- Caltech Public Relations Office at 818-395-6326. For daily
- updates, call our Earthquake Information Hotline: 818-395-6977.
- --------------------------------
- This week's Report covers the time period from midnight Thursday
- morning, April 13, Pacific Daylight Time, to midnight
- Wednesday night, April 19, 1995, Pacific Daylight Time. We
- recorded 270 earthquakes of M1.0 or larger during the 7-day
- period covered.
- We had another relatively quiet week. The largest quake
- was a M3.4 Northridge aftershock on Saturday afternoon, which
- was fairly widely felt in the San Fernando Valley. There was
- another Northridge aftershock, this time only M2.5, on Monday
- afternoon. Like almost all of the Northridge aftershocks, the
- M3.4 was a west-northwest-striking thrust.
- A M2.7 Landers aftershock was felt in Yucca Valley on
- Friday evening.
- Just before noon of Friday, there was a M3.0 near Big
- Bear, which was an aftershock in the Landers/Big Bear sequence.
- For some reason, we didn't get any inquiries about it, although
- it could easily have been felt.
- That's about all the (seismic) news that's fit to print.
- The table lists the quakes this week that were M2.0 or
- larger in the central part of the coverage area. Times are local
- times; if you want Greenwich Mean Time, add 7 hrs to the Pacific
- Daylight Time or 8 hrs to the Pacific Standard Time listed.
-
- Table 1
- -------
- Date Time N Lat. W Long. Mag
- -------------------------------------------------------------
- 4/13 12:04 am 35 18.2 118 30.8 2.2 12 mi. NNW of Tehachapi
- 4/13 12:04 am 35 18.3 118 30.9 2.2 "
- 4/13 1:30 am 33 57.0 116 24.2 2.1 5 mi. E of Desert Hot
- Springs
- 4/13 6:26 am 35 34.5 119 45.3 3.0 20 mi. NE of Simmler
- 4/13 9:48 am 34 17.0 118 31.7 2.0 3 mi. N of Northridge
- 4/13 10:12 am 35 0.6 116 58.6 2.3 8 mi. NNE of Barstow
- 4/13 3:53 pm 33 59.8 118 55.3 2.1 3 mi. SSE of Leo Carrillo
- State Beach
- 4/13 5:07 pm 35 5.4 119 7.6 2.4 10 mi. WNW of the I5/99
- interchange/Wheeler ridge
- 4/13 5:07 pm 35 4.2 119 7.2 2.5 "
- 4/13 5:30 pm 35 5.2 119 7.9 2.2 "
- 4/13 5:34 pm 34 18.3 119 54.0 2.0 7 mi. SSW of Isla Vista
- 4/13 9:57 pm 36 13.3 120 17.0 2.5 7 mi. NE of Coalinga
- 4/14 1:28 am 35 57.5 118 18.0 2.5 20 mi. WSW of Coso Junction
- 4/14 1:49 am 35 55.9 117 39.8 2.3 17 mi. ESE of Coso Junction
- Coso Range
- 4/14 11:28 am 34 13.7 116 45.8 3.0 5 mi. ESE of Big Bear City
- 4/14 3:03 pm 34 10.8 116 25.8 2.0 4 mi. N of Yucca Valley
- 4/14 4:33 pm 33 41.5 116 42.2 2.6 3 mi. S of Idyllwild
- 4/14 7:09 pm 34 20.1 116 27.9 2.7 14 mi. N of Yucca Valley
- FELT
- 4/15 1:19 am 36 30.4 117 54.9 2.0 10 mi. SE of Lone Pine
- 4/15 8:52 am 33 18.3 117 40.7 2.5 8 mi. SSW of San Clemente
- 4/15 2:30 pm 34 21.8 116 27.4 2.1 16 mi. N of Yucca Valley
- 4/15 3:00 pm 34 19.4 118 31.9 3.4 3 mi. S of Newhall; FELT
- 4/15 11:07 pm 33 43.7 118 40.1 2.3 14 mi. WSW of Palos Verdes
- Point
- 4/16 12:28 am 35 1.9 117 0.1 2.3 10 mi. N of Barstow
- 4/16 3:03 pm 32 2.3 116 23.0 3.1 53 mi. SSW of Ocotillo
- 4/16 4:59 pm 35 50.6 117 43.5 2.3 15 mi. NNW of Ridgecrest
- 4/16 11:02 pm 35 52.8 117 54.3 2.0 11 mi. SSE of Coso Junction
- Cpsp Range
- 4/17 8:23 am 34 17.8 118 27.9 2.3 1 mi. WNW of San Fernando
- 4/17 10:19 am 33 43.0 116 50.6 2.1 7 mi. ESE of Hemet
- 4/17 10:22 am 34 14.1 117 59.1 2.1 4 mi. E of Mt. Wilson
- Observatory
- 4/17 3:09 pm 34 17.6 118 23.9 2.5 2 mi. ENE of San Fernando
- FELT
- 4/17 9:09 pm 34 25.4 117 43.8 2.4 7 mi. NW of Wrightwood
- 4/17 9:37 pm 33 23.4 116 23.1 2.4 9 mi. N of Borrego Springs
- 4/18 5:00 am 34 15.9 118 27.0 2.1 1 mi. SSW of San Fernando
- 4/18 7:24 am 33 49.5 117 4.9 2.4 8 mi. NW of Hemet
- 4/18 8:03 pm 33 52.7 116 53.6 2.0 3 mi. SSW of Banning
- 4/19 2:52 am 35 2.1 116 60.0 2.3 10 mi. N of Barstow
- 4/19 4:06 pm 35 18.3 118 35.4 2.1 14 mi. NNW of Tehachapi
-
- -------------------------------------------------------------