Errors from USGS Location and Magnitude:
EQPROC = 8.9km (5.5 mi)
HYPO2K = 10.0km (6.2 mi)
Magnitude = 0.2
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2025/09/09 12:31:47 36.868 -121.610 M2.7 5.2 4 km SE of Aromas, CA
EQPROC Summary:
2809 2025Sep 9 1231 47.01 36.8036 -121.6697 1.50 0.16 7.9 92.4 182 5
ATZ SHZ PN 01 2025Sep 9 1231 52.77 P D0 28.0 -0.00
B054 EHZ PB -- 2025Sep 9 1232 8.54 P U3 126.4 0.25
B057 EHZ PB -- 2025Sep 9 1232 13.49 P U1 157.3 1.26
B058 EHZ PB -- 2025Sep 9 1231 48.97 P D0 7.9 -0.04
B073 EHZ PB -- 2025Sep 9 1232 10.76 P ?2 142.3 0.44
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2025-09-09 1231 47.31 36 47.064 121W39.460 1.50 0.03 1.03 8.75 2.51 2.51E 1.49
SOURCE
NSTA NPHS DMIN MODEL GAP ITR NFM NWR NWS NVR REMRKS-AVH N.XMG-XMMAD-T N.FMG-FMMAD-T L F X
5 5 7.1 Emb 186 7 4 4 0 5 - 2 2.50 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
2.51 2 2.50 E 7 2 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 7.1 76 65 PD 48.97 1.66 1.65 0.00 0.01 1.92 W 0.999 0.00 37.0 2.51 E
ATZ PN SHZ 01 A 30.4 316 65 PD 52.77 5.46 5.45 0.00 0.01 1.92 W 0.999 0.00 117 3.77 E
B054 PB EHZ -- A128.7 339 65 PU 3 68.54 21.23 21.43 0.00 -0.20 0.43 W 0.999 0.00 13.0 4 1.80XE
B073 PB EHZ -- A141.3 130 65 P 2 70.76 23.45 23.48 0.00 -0.03 0.73 W 0.999 0.00 1.00 4
B057 PB EHZ -- A159.7 331 65 PU 1 73.49 26.18 26.46 0.00 -0.28 0.01 W 0.000 0.00 3.00 4 0.42XE