Errors from USGS Location and Magnitude:
EQPROC = 4.4km (2.7 mi)
HYPO2K = 12.3km (7.6 mi)
Magnitude = 0.0
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2023/04/23 20:20:17 37.976 -121.823 M3.1 19.6 4km SSW of Antioch, CA
EQPROC Summary:
2451 2023Apr23 2020 18.82 37.9931 -121.8680 15.00 0.02 32.8 76.1 214 6
RE9A7 EHZ AM 00 2023Apr23 2020 27.87 P ?1 50.4 -0.01
MTUMZ SHZ PN 01 2023Apr23 2020 34.24 P ?3 93.4 0.09
ADUB1 SHZ PN 01 2023Apr23 2020 32.96 P D3 83.5 0.26
B057 EHZ PB -- 2023Apr23 2020 29.52 P U0 61.7 -0.00
B054 EHZ PB -- 2023Apr23 2020 25.30 P D0 32.8 -0.01
B058 EHZ PB -- 2023Apr23 2020 38.50 PnD2 135.0 -0.99
B058 EHZ PB -- 2023Apr23 2020 42.58 PnD3 135.0 3.09 WAIF
B058 EHZ PB -- 2023Apr23 2020 42.58 PgD3 135.0 2.35 WAIF
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2023-04-23 2020 18.52 37 53.097 121W54.646 32.35 0.01 1.92 0.87 3.07 3.07E 32.32
SOURCE
NSTA NPHS DMIN MODEL GAP ITR NFM NWR NWS NVR REMRKS-AVH N.XMG-XMMAD-T N.FMG-FMMAD-T L F X
6 6 25.6 Emb 187 7 4 4 0 6 4 3.07 E W W
XMAG2-N.XMG2-XMMAD-T-S FMAG2-N.FMG2-FMMAD-T-S PREF.MAG-N.PMAG-PRMAD-T DEPDAT NS ZT TYP
3.07 4 3.07 E 32 5 M CRH
REGION=
STA NET COM L CR DIST AZM AN P/S WT SEC (TOBS -TCAL -DLY =RES) WT SR INFO CAL DUR-W-FMAG-T -AMP-U-PER-W-XMAG-T DE
B054 PB EHZ -- A 25.6 264 138 PD 25.30 6.78 6.78 0.00 -0.00 1.23 W 1.000 0.00 45.0 3.13 E
RE9A7AM EHZ 00 A 47.4 113 119 P 1 27.87 9.35 9.34 0.00 0.01 0.92 W 1.000 0.00 23.0 4 2.58XE
B057 PB EHZ -- A 59.7 286 112 PU 29.52 11.00 10.99 0.00 0.01 1.23 W 1.000 0.00 35.0 3.00 E
ADUB1PN SHZ 01 A 71.0 185 108 PD 3 32.96 14.44 12.58 0.00 1.86* 0.00 W 0.000 0.00 67.0 3.63 E
MTUMZPN SHZ 01 A 81.2 179 105 P 3 34.24 15.72 14.04 0.00 1.68* 0.00 W 0.000 0.00 25.0 2.70 E
B058 PB EHZ -- A124.0 166 54 PD 2 38.50 19.98 19.98 0.00 0.00 0.62 W 0.999 0.00 1.00 4