Errors from USGS Location and Magnitude:
EQPROC = 4.2km (2.6 mi)
HYPO2K = 3.3km (2.1 mi)
Magnitude = 0.5
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2023/09/28 11:34:18 37.389 -121.601 M2.0 4.2 20 km E of Alum Rock, CA
EQPROC Summary:
2543 2023Sep28 1134 18.88 37.4154 -121.6351 5.25 0.04 37.2 53.6 146 4
MTUMZ SHZ PN 01 2023Sep28 1134 25.84 P D0 37.2 0.00
RE9A7 EHZ AM 00 2023Sep28 1134 26.06 P ?2 38.5 0.00
B058 EHZ PB -- 2023Sep28 1134 31.16 P ?2 68.6 0.00
B054 EHZ PB -- 2023Sep28 1134 32.22 P U3 70.2 0.79
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2023-09-28 1134 19.40 37 24.603 121W37.853 5.25 0.21 1.99 17.59 1.53 1.53E 5.21
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 37.0 Emb 147 9 2 4 0 4 - 1 0.00 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
1.53 1 0.00 E 40 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
MTUMZPN SHZ 01 A 37.0 220 95 PD 25.84 6.44 6.52 0.00 -0.08 1.78 W 0.999 0.00 11.0 1.53 E
RE9A7AM EHZ 00 A 38.8 29 95 P 2 26.06 6.66 6.80 0.00 -0.14 0.89 W 1.000 0.00 3.00 4 0.29XE
B058 PB EHZ -- A 67.9 176 92 P 2 31.16 11.76 11.52 0.00 0.24 0.89 W 1.000 0.00 1.00 4
B054 PB EHZ -- A 70.8 316 92 PU 3 32.22 12.82 12.00 0.00 0.82* 0.44 W 0.999 0.00 3.00 4 0.33XE