Errors from USGS Location and Magnitude:
EQPROC = 4.0km (2.5 mi)
HYPO2K = 4.7km (2.9 mi)
Magnitude = 0.5
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2026/03/23 10:34:08 37.774 -121.942 M2.8 8.9 3 km ESE of San Ramon, CA
EQPROC Summary:
2933 2026Mar23 1034 9.14 37.7692 -121.9865 1.36 0.14 21.3 58.4 157 7
LCGPZ SHZ PN 01 2026Mar23 1034 16.56 P U1 37.7 -0.00
GLFBZ SHZ PN 01 2026Mar23 1034 17.08 P ?2 38.9 0.32
RE9A7 EHZ AM 00 2026Mar23 1034 18.76 P D1 50.6 -0.00
ATZ SHZ PN 01 2026Mar23 1034 25.13 P U0 88.2 -0.00
B057 EHZ PB -- 2026Mar23 1034 19.76 P U0 58.6 -0.35
B054 EHZ PB -- 2026Mar23 1034 14.05 P U0 21.3 0.26
B058 EHZ PB -- 2026Mar23 1034 28.93 P ?2 113.5 0.12
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2026-03-23 1034 9.98 37 46.699 121W59.327 1.34 0.15 0.89 14.36 2.33 2.33E 1.33
SOURCE
NSTA NPHS DMIN MODEL GAP ITR NFM NWR NWS NVR REMRKS-AVH N.XMG-XMMAD-T N.FMG-FMMAD-T L F X
7 7 20.7 Emb 158 5 5 7 0 7 - 6 2.11 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
2.33 6 2.11 E 9 5 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 20.7 297 35 PU 14.05 4.07 3.90 0.00 0.17 1.27 W 0.972 0.00 37.0 2.60 E
LCGPZPN SHZ 01 A 38.3 216 35 PU 1 16.56 6.58 6.77 0.00 -0.19 0.95 W 0.358 0.00 25.0 2.33 E
GLFBZPN SHZ 01 A 39.7 202 35 P 2 17.08 7.10 7.00 0.00 0.10 0.64 W 0.152 0.00 20.0 2.12 E
RE9A7AM EHZ 00 A 50.9 97 35 PD 1 18.76 8.78 8.82 0.00 -0.04 0.95 W 0.880 0.00 51.0 3.04 E
B057 PB EHZ -- A 57.8 299 35 PU 19.76 9.78 9.93 0.00 -0.15 1.27 W 0.990 0.00 31.0 2.56 E
ATZ PN SHZ 01 A 89.2 174 35 PU 25.13 15.15 15.04 0.00 0.11 1.27 W 0.512 0.00 40.0 2.84 E
B058 PB EHZ -- A114.5 161 35 P 2 28.93 18.95 19.16 0.00 -0.21 0.64 W 0.132 0.00 1.00 4