and
indicate epicenters for Monday's two largest quakes as reported by NEIC (see below).
The following is information from the United States Geological Survey, National Earthquake Information Center:
U.S. DEPARTMENT OF THE INTERIOR NO. 4-028 GEOLOGICAL SURVEY JAN 28, 1994 NEIC QUICK EPICENTER DETERMINATIONS UTC TIME LAT LONG DEP GS MAGS SD STA REGION AND COMMENTS HRMNSEC MB Msz USED JAN 17 123055.3& 34.217N 118.550W 15 6.2 6.7 332 SOUTHERN CALIFORNIA.. Mw 6.7 (GS), 6.7 (HRV). ML 6.4 (PAS). Mo=3.6*10**19 Nm (PPT). At least 56 people killed, more than 7,000 injured, 20,000 homeless and extensive damage in Los Angeles and Ventura Counties. Most of the severe damage occurred in the Northridge-San Fernando area. Damage was also sustained to Anaheim Stadium. Collapsed overpasses closed the Santa Monica Freeway and Interstate 5 near Reseda. Fires caused additional damage in the San Fernando Valley and at Malibu and Venice. Felt throughout much of southern California and as far east as Las Vegas, Nevada. Two events about 2.5 seconds apart. Depth 19.4 kilometers from broadband displacement seismograms, based on first event. Moment Tensor Solution (GS): Dep 21.0; Principal axes: (T) Val=1.15, Plg=76, Azm=125; (N) Val=0.04, Plg=13, Azm=284; (P) Val=-1.19, Plg=5, Azm=15; Best double couple: Mo=1.2*10**19 Nm; NP1: Strike=119, Dip=42, Slip=110; NP2: Strike=274, Dip=51, Slip=73. Radiated Energy (GS): 2.1*10**14 Nm. Centroid, Moment Tensor (HRV): Centroid location: Origin time 12:31:02.0; Lat 34.30 N; Lon 118.65 W; Depth 17.0; Half-duration 5.3 sec; Principal axes: (T) Val=1.22, Plg=71, Azm=109; (N) Val=-0.10, Plg=19, Azm=294; (P) Val=-1.12, Plg=2, Azm=204; Best double couple: Mo=1.2*10**19 Nm; NP1: Strike=275, Dip=46, Slip=64; NP2: Strike=131, Dip=50, Slip=115. 123936.0 34.061N 118.579W 10G 0.8 27 SOUTHERN CALIFORNIA. ML 5.0 (GS). Double event. 124935.9* 34.166N 118.452W 10G 1.1 15 SOUTHERN CALIFORNIA. MD 3.5 (PAS). 125105.1* 34.282N 118.494W 10G 1.2 16 SOUTHERN CALIFORNIA. MD 3.8 (PAS). 125408.4* 34.393N 118.780W 10G 1.0 18 SOUTHERN CALIFORNIA. Double event. 125754.4? 34.18 N 118.43 W 10G 0.8 10 SOUTHERN CALIFORNIA. ML 3.9 (GS). MD 3.7 (PAS). 130625.9 34.180N 118.653W 10G 4.5 0.8 36 SOUTHERN CALIFORNIA. ML 4.5 (GS). 131057.7* 34.457N 118.775W 10G 1.2 11 SOUTHERN CALIFORNIA 131327.3 34.390N 118.765W 10G 0.9 18 SOUTHERN CALIFORNIA 131542.2 34.260N 118.494W 10G 1.0 24 SOUTHERN CALIFORNIA. ML 3.7 (GS). 131743.9 34.281N 118.507W 10G 1.2 24 SOUTHERN CALIFORNIA. ML 3.7 (GS). MD 3.6 (PAS). 132505.7 34.412N 118.588W 10G 0.9 22 SOUTHERN CALIFORNIA. ML 3.7 (GS). MD 3.4 (PAS). 132644.5? 34.26 N 118.50 W 10G 4.0 2.3 7 SOUTHERN CALIFORNIA. ML 4.6 (GS). MD 4.5 (PAS). 133221.0* 34.314N 118.504W 10G 0.9 17 SOUTHERN CALIFORNIA. MD 3.7 (PAS). 133744.5 34.124N 118.661W 10G 1.2 34 SOUTHERN CALIFORNIA. ML 4.2 (GS). MD 3.9 (PAS). 134222.8* 34.323N 118.691W 10G 1.1 17 SOUTHERN CALIFORNIA. ML 3.5 (GS). 134433.9* 34.342N 118.659W 10G 0.9 24 SOUTHERN CALIFORNIA. ML 3.6 (GS). MD 3.8 (PAS). 134513.9* 34.517N 118.852W 10G 0.9 27 SOUTHERN CALIFORNIA. ML 4.1 (GS). MD 3.9 (PAS). 135559.6? 34.13 N 118.85 W 10G 4.1 1.4 8 SOUTHERN CALIFORNIA. ML 4.6 (GS). MD 4.4 (PAS). 140042.2 34.334N 118.554W 10G 0.5 12 SOUTHERN CALIFORNIA. ML 3.3 (GS). MD 3.2 (PAS). 140357.6 34.250N 118.700W 10G 1.3 28 SOUTHERN CALIFORNIA. ML 3.7 (GS). MD 3.8 (PAS). 140807.9 34.289N 118.445W 10G 1.0 21 SOUTHERN CALIFORNIA. ML 4.1 (GS). MD 3.7 (PAS). 141428.1 34.150N 118.510W 10G 0.9 46 SOUTHERN CALIFORNIA. ML 4.5 (GS). MD 4.3 (PAS). 142651.2 34.220N 118.538W 10G 1.5 48 SOUTHERN CALIFORNIA. ML 3.9 (GS). MD 3.6 (PAS). 142800.9 34.058N 118.599W 10G 0.8 20 SOUTHERN CALIFORNIA. ML 3.7 (GS). 142943.7* 34.483N 118.641W 15G 1.1 19 SOUTHERN CALIFORNIA. ML 3.3 (GS). 143341.4 34.273N 118.500W 10G 1.0 23 SOUTHERN CALIFORNIA. ML 3.2 (GS). MD 3.5 (PAS). 144610.2 38.840N 122.320W 10G 4.0 0.9 53 NORTHERN CALIFORNIA. ML 4.0 (GS). 145036.2 34.171N 118.555W 10G 1.1 38 SOUTHERN CALIFORNIA. ML 4.1 (GS). MD 3.8 (PAS). 145811.1 34.347N 118.524W 10G 1.2 21 SOUTHERN CALIFORNIA. ML 3.1 (GS). 150027.8 34.313N 118.553W 10G 1.4 26 SOUTHERN CALIFORNIA. ML 3.2 (GS). MD 3.1 (PAS). 150701.1 34.162N 118.548W 10G 3.3 0.9 53 SOUTHERN CALIFORNIA. ML 4.0 (GS). MD 4.2 (PAS). 151009.9 34.120N 118.586W 10G 1.2 28 SOUTHERN CALIFORNIA. ML 4.0 (GS). MD 3.9 (PAS). 151427.3 34.382N 118.570W 10G 0.9 26 SOUTHERN CALIFORNIA. ML 3.5 (GS). MD 3.7 (PAS). 152048.3 34.250N 118.687W 10G 0.9 27 SOUTHERN CALIFORNIA. ML 3.6 (GS). MD 3.3 (PAS). 152403.6 34.235N 118.682W 10G 1.3 28 SOUTHERN CALIFORNIA. ML 3.6 (GS). MD 3.5 (PAS). 154210.8 34.201N 118.521W 10G 1.2 38 SOUTHERN CALIFORNIA. ML 3.8 (GS). MD 3.8 (PAS). 155408.5 34.259N 118.707W 10G 4.5 0.8 111 SOUTHERN CALIFORNIA. ML 4.8 (GS). MD 4.5 (PAS). Felt. 155725.6 34.246N 118.547W 10G 1.0 29 SOUTHERN CALIFORNIA. ML 2.8 (GS). 161600.4 34.205N 118.594W 10G 1.0 41 SOUTHERN CALIFORNIA. ML 3.6 (GS). 161925.3 34.356N 118.573W 10G 1.4 29 SOUTHERN CALIFORNIA. ML 3.5 (GS). MD 3.5 (PAS). 164914.5 34.252N 118.494W 10G 1.0 49 SOUTHERN CALIFORNIA. ML 3.4 (GS). MD 3.3 (PAS). 175605.2 34.116N 118.653W 10G 4.1 0.9 69 SOUTHERN CALIFORNIA. ML 4.3 (GS). MD 4.5 (PAS). Multiple event. 183958.1 34.285N 118.511W 10G 0.9 23 SOUTHERN CALIFORNIA. MD 3.1 (PAS). 193154.2 60.365N 141.198W 10G 0.9 16 SOUTHEASTERN ALASKA. ML 2.6 (AEIC). 194351.3 34.293N 118.709W 10G 0.9 61 SOUTHERN CALIFORNIA. ML 4.0 (GS). 194619.1 34.217N 118.793W 10G 1.0 29 SOUTHERN CALIFORNIA. ML 3.7 (GS). 200527.4* 34.322N 118.592W 10G 0.7 19 SOUTHERN CALIFORNIA. ML 3.8 (GS). MD 3.7 (PAS). 201149.3 34.269N 118.550W 10G 1.2 39 SOUTHERN CALIFORNIA. ML 3.7 (GS). MD 3.6 (PAS). 201738.7 34.330N 118.571W 10G 1.2 26 SOUTHERN CALIFORNIA. ML 3.7 (GS). MD 3.5 (PAS). 203823.3 34.283N 118.463W 10G 0.9 40 SOUTHERN CALIFORNIA. ML 3.8 (GS). MD 3.5 (PAS). 204559.3 34.137N 118.725W 10G 4.6 0.9 76 SOUTHERN CALIFORNIA. ML 5.1 (GS). 205022.3 34.274N 118.494W 10G 1.5 29 SOUTHERN CALIFORNIA. ML 3.9 (GS). MD 3.8 (PAS). 223135.5 34.207N 118.528W 10G 1.2 20 SOUTHERN CALIFORNIA. ML 4.2 (GS). 225034.3 34.255N 118.530W 10G 1.2 44 SOUTHERN CALIFORNIA. ML 3.6 (GS). MD 3.5 (PAS). 225711.9 34.248N 118.674W 10G 0.6 28 SOUTHERN CALIFORNIA. ML 3.8 (GS). MD 3.5 (PAS). 233328.4 34.124N 118.818W 10G 5.6 5.8 1.2 119 SOUTHERN CALIFORNIA. Mw 5.9 (HRV). MD 5.3 (PAS). Additional damage in the epicentral area. Centroid, Moment Tensor (HRV): Centroid location: Origin time 23:33:37.2; Lat 34.36 N; Lon 118.62 W; Depth 15.0 FIX; Half-duration 2.2 sec; Principal axes: (T) Val=8.12, Plg=68, Azm=305; (N) Val=-0.40, Plg=21, Azm=108; (P) Val=-7.72, Plg=6, Azm=200; Best double couple: Mo=7.9*10**17 Nm; NP1: Strike=312, Dip=43, Slip=121; NP2: Strike=92, Dip=54, Slip=64. 234923.7 34.276N 118.696W 10G 0.8 27 SOUTHERN CALIFORNIA. ML 4.2 (GS). MD 3.9 (PAS).