Errors from USGS Location and Magnitude:
EQPROC = 4.5km (2.8 mi)
HYPO2K = 4.3km (2.7 mi)
Magnitude = 0.0
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2026/09/14 13:47:28 37.875 -121.810 M3.0 16.9 9 km SW of Brentwood, CA
EQPROC Summary:
3017 2026Sep14 1347 29.29 37.8961 -121.8531 14.78 0.01 30.8 67.2 194 5
RE9A7 EHZ AM 00 2026Sep14 1347 37.35 P U0 43.4 0.00
B054 EHZ PB -- 2026Sep14 1347 35.51 P U0 30.8 -0.00
B057 EHZ PB -- 2026Sep14 1347 40.44 P U2 64.5 0.01
ADUB1 SHZ PN 01 2026Sep14 1347 41.66 P D0 73.0 0.00
B058 EHZ PB -- 2026Sep14 1347 50.26 PgU3 124.2 1.12
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2026-09-14 1347 29.56 37 52.544 121W51.512 15.67 0.13 1.06 3.67 2.97 2.97E 15.66
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 30.1 Emb 188 9 5 5 0 5 # 5 1.20 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
2.97 5 1.20 E 13 4 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 30.1 267 115 PU 35.51 5.95 5.86 0.00 0.09 1.33 W 0.834 0.00 49.0 3.00 E
RE9A7AM EHZ 00 A 42.8 114 108 PU 37.35 7.79 7.79 0.00 -0.00 1.33 W 0.999 0.00 154 2 4.17 E
B057 PB EHZ -- A 64.4 286 102 PU 2 40.44 10.88 11.18 0.00 -0.30 0.67 W 0.606 0.00 39.0 2.87 E
ADUB1PN SHZ 01 A 70.6 189 101 PD 41.66 12.10 12.16 0.00 -0.06 1.33 W 0.936 0.00 78.0 3.55 E
B058 PB EHZ -- A122.0 168 66 PU 3 50.26 20.70 20.13 0.00 0.57* 0.33 W 0.622 0.00 37.0 2.88 E