Errors from USGS Location and Magnitude:
EQPROC = 3.0km (1.9 mi)
HYPO2K = 4.2km (2.6 mi)
Magnitude = 0.2
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2026/04/05 21:25:00 36.743 -121.462 M2.7 7.4 12 km SW of Ridgemark, CA
EQPROC Summary:
2941 2026Apr 5 2125 0.59 36.7324 -121.4931 3.65 0.11 10.7 94.2 173 6
ATZ SHZ PN 01 2026Apr 5 2125 9.13 P D3 45.0 0.26
ADUB1 SHZ PN 01 2026Apr 5 2125 14.03 P U2 71.6 0.67
B058 EHZ PB -- 2026Apr 5 2125 3.06 P U0 10.7 0.00
B054 EHZ PB -- 2026Apr 5 2125 23.19 P U2 140.0 0.04
B057 EHZ PB -- 2026Apr 5 2125 25.78 PnU3 172.2 -1.48
B073 EHZ PB -- 2026Apr 5 2125 21.62 Pg?2 125.5 0.03
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2026-04-05 2125 0.50 36 46.728 121W26.292 3.87 0.23 3.86 18.28 2.55 2.55E 3.86
SOURCE
NSTA NPHS DMIN MODEL GAP ITR NFM NWR NWS NVR REMRKS-AVH N.XMG-XMMAD-T N.FMG-FMMAD-T L F X
6 6 12.9 Emb 165 9 5 5 0 6 - 2 2.54 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
2.55 2 2.54 E 8 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
B058 PB EHZ -- A 12.9 281 99 PU 3.06 2.56 2.60 0.00 -0.04 2.08 W 0.999 0.00 37.0 2.55 E
ATZ PN SHZ 01 A 46.6 299 92 PD 3 9.13 8.63 8.06 0.00 0.57* 0.52 W 0.973 0.00 23.0 4 2.26XE
ADUB1PN SHZ 01 A 70.9 318 91 PU 2 14.03 13.53 12.01 0.00 1.52* 0.32 W 0.063 0.00 80.0 3.49 E
B073 PB EHZ -- A126.7 136 90 P 2 21.62 21.12 21.12 0.00 0.00 1.04 W 0.999 0.00 13.0 4 1.80XE
B054 PB EHZ -- A137.7 331 90 PU 2 23.19 22.69 22.86 0.00 -0.17 1.04 W 0.962 0.00 1.00 4
B057 PB EHZ -- A170.8 325 66 PU 3 25.78 25.28 28.18 0.00 -2.90* 0.00 W 0.000 0.00 1.00 4