Errors from USGS Location and Magnitude:
EQPROC = 0.4km (0.3 mi)
HYPO2K = 0.9km (0.5 mi)
Magnitude = 0.1
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2023/12/06 12:28:15 37.400 -121.763 M2.5 3.3 7 km ENE of Alum Rock, CA
EQPROC Summary:
2571 2023Dec 6 1228 15.52 37.3962 -121.7643 10.00 0.02 25.2 64.3 203 4
ADUB1 SHZ PN 01 2023Dec 6 1228 20.60 P U0 25.2 0.00
B054 EHZ PB -- 2023Dec 6 1228 27.03 P U3 64.3 -0.01
B058 EHZ PB -- 2023Dec 6 1228 27.63 P U3 68.2 0.02
B057 EHZ PB -- 2023Dec 6 1228 32.25 P U1 99.6 0.06
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2023-12-06 1228 15.84 37 24.273 121W46.666 9.99 0.09 2.99 9.51 2.38 2.38E 9.97
SOURCE
NSTA NPHS DMIN MODEL GAP ITR NFM NWR NWS NVR REMRKS-AVH N.XMG-XMMAD-T N.FMG-FMMAD-T L F X
4 4 25.0 Emb 201 7 4 4 0 4 - 3 1.19 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
2.38 3 1.19 E 15 4 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
ADUB1PN SHZ 01 A 25.0 226 108 PU 20.60 4.76 4.75 0.00 0.01 1.78 W 1.000 0.00 35.0 2.57 E
B054 PB EHZ -- A 62.8 324 97 PU 3 27.03 11.19 10.76 0.00 0.43 0.44 W 0.999 0.00 21.0 2.19 E
B058 PB EHZ -- A 69.4 165 96 PU 3 27.63 11.79 11.83 0.00 -0.04 0.44 W 1.000 0.00 17.0 2.00 E
B057 PB EHZ -- A 98.0 316 94 PU 1 32.25 16.41 16.46 0.00 -0.05 1.33 W 1.000 0.00 11.0 4 1.61XE