Errors from USGS Location and Magnitude:
EQPROC = 2.1km (1.3 mi)
HYPO2K = 4.0km (2.5 mi)
Magnitude = 0.2
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2025/12/08 22:55:44 37.823 -122.212 M2.9 4.6 2 km E of Piedmont, CA
EQPROC Summary:
2853 2025Dec 8 2255 44.33 37.8359 -122.2297 3.00 0.04 3.8 59.5 144 4
ADUB1 SHZ PN 01 2025Dec 8 2255 56.76 P U1 69.0 -0.00
B054 EHZ PB -- 2025Dec 8 2255 45.46 P D0 3.8 -0.08
B057 EHZ PB -- 2025Dec 8 2255 51.25 P U0 36.5 0.00
B058 EHZ PB -- 2025Dec 8 2256 6.47 P U3 128.6 0.90
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2025-12-08 2255 44.80 37 51.533 122W12.318 2.37 0.01 6.10 4.22 2.73 2.73E 2.35
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 0.5 Emb 138 6 4 4 0 4 - 3 1.36 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
2.73 3 1.36 E 17 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
B054 PB EHZ -- A 0.5 74 160 PD 45.46 0.66 0.66 0.00 -0.00 1.33 W 1.000 0.00 49.0 2.75 E
B057 PB EHZ -- A 36.8 301 90 PU 51.25 6.45 6.45 0.00 0.00 1.33 W 0.999 0.00 37.0 2.70 E
ADUB1PN SHZ 01 A 70.7 163 90 PU 1 56.76 11.96 11.97 0.00 -0.01 1.00 W 1.000 0.00 99.0 3.70 E
B058 PB EHZ -- A129.9 154 90 PU 3 66.47 21.67 21.60 0.00 0.07 0.33 W 1.000 0.00 11.0 4 1.64XE