Errors from USGS Location and Magnitude:
EQPROC = 20.8km (12.9mi)
HYPO2K = 12.5km (7.8 mi)
Magnitude = 0.2
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2025/12/08 13:37:52 37.751 -121.943 M2.7 8.4 4 km SE of San Ramon, CA
EQPROC Summary:
2849 2025Dec 8 1337 50.61 37.8828 -121.7750 1.50 0.03 37.6 75.9 249 4
ADUB1 SHZ PN 01 2025Dec 8 1338 3.98 P D0 72.9 0.00
B054 EHZ PB -- 2025Dec 8 1337 57.99 P U0 37.6 0.00
B057 EHZ PB -- 2025Dec 8 1338 3.76 P U0 71.6 0.00
B058 EHZ PB -- 2025Dec 8 1338 12.33 P ?2 121.6 1.05
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2025-12-08 1337 52.60 37 50.504 121W51.525 1.47 0.01 2.62 8.15 2.46 2.46E 1.45
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 30.1 Emb 238 6 3 4 0 4 - 3 1.22 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
2.46 3 1.22 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 30.1 275 35 PU 57.99 5.39 5.40 0.00 -0.01 1.14 W 1.000 0.00 33.0 2.54 E
B057 PB EHZ -- A 65.5 289 35 PU 63.76 11.16 11.16 0.00 0.00 1.14 W 0.999 0.00 25.0 2.37 E
ADUB1PN SHZ 01 A 66.8 190 35 PD 63.98 11.38 11.38 0.00 0.00 1.14 W 0.999 0.00 39.0 2.80 E
B058 PB EHZ -- A118.3 167 35 P 2 72.33 19.73 19.74 0.00 -0.01 0.57 W 1.000 0.00 1.00 4