Errors from USGS Location and Magnitude:
EQPROC = 6.4km (4.0 mi)
HYPO2K = 2.5km (1.6 mi)
Magnitude = -0.3
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2025/07/28 14:56:24 37.318 -121.684 M2.0 6.6 14 km SE of Alum Rock, CA
EQPROC Summary:
2799 2025Jul28 1456 25.62 37.2649 -121.7125 12.50 0.09 23.7 67.2 200 4
ADUB1 SHZ PN 01 2025Jul28 1456 30.64 P ?3 23.7 0.04
B054 EHZ PB -- 2025Jul28 1456 39.42 P U3 78.9 0.37
B057 EHZ PB -- 2025Jul28 1456 43.80 P ?1 113.3 -0.00
B058 EHZ PB -- 2025Jul28 1456 35.56 P ?3 53.0 0.29
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2025-07-28 1456 25.56 37 18.643 121W42.691 12.83 0.35 8.90 21.21 2.25 2.25E 12.81
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 24.8 Emb 203 9 1 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
2.25 1 0.00 E 20 3 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 24.8 254 114 P 3 30.64 5.08 4.90 0.00 0.18 0.67 W 1.000 0.00 24.0 2.25 E
B058 PB EHZ -- A 57.9 168 100 P 3 35.56 10.00 10.05 0.00 -0.05 0.67 W 1.000 0.00 1.00 4
B054 PB EHZ -- A 74.7 325 98 PU 3 39.42 13.86 12.74 0.00 1.12* 0.67 W 1.000 0.00 3.00 4 0.37XE
B057 PB EHZ -- A109.6 317 95 P 1 43.80 18.24 18.37 0.00 -0.13 2.00 W 1.000 0.00 1.00 4