Errors from USGS Location and Magnitude:
EQPROC = 1.9km (1.2 mi)
HYPO2K = 2.5km (1.5 mi)
Magnitude = 0.0
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2026/05/17 06:28:15 36.821 -121.353 M3.7 6.9 1 km NE of Ridgemark, CA
EQPROC Summary:
2953 2026May17 628 15.37 36.8306 -121.3702 2.00 0.08 18.9 95.7 143 9
ATZ SHZ PN 01 2026May17 628 24.70 P U0 49.5 0.03
MTUMZ SHZ PN 01 2026May17 628 26.15 P U0 58.7 -0.09
GLFBZ SHZ PN 01 2026May17 628 32.52 P ?0 97.0 -0.00
LCGPZ SHZ PN 01 2026May17 628 34.67 P ?3 106.7 0.73
RE9A7 EHZ AM 00 2026May17 628 35.03 P ?3 98.4 2.30
B058 EHZ PB -- 2026May17 628 19.49 P U0 18.9 -0.00
B054 EHZ PB -- 2026May17 628 37.38 Pn?3 135.8 -0.36
B057 EHZ PB -- 2026May17 628 41.00 PnU3 169.7 -1.07
B073 EHZ PB -- 2026May17 628 36.79 PgD3 126.2 -0.00
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2026-05-17 0628 15.94 36 48.742 121W22.112 2.00 0.05 1.32 9.36 3.67 3.67E 1.97
SOURCE
NSTA NPHS DMIN MODEL GAP ITR NFM NWR NWS NVR REMRKS-AVH N.XMG-XMMAD-T N.FMG-FMMAD-T L F X
9 9 19.0 Emb 183 7 5 5 0 9 - 8 0.97 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
3.67 8 0.97 E 30 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
B058 PB EHZ -- A 19.0 266 90 PU 19.49 3.55 3.56 0.00 -0.01 1.18 W 0.836 0.00 85.0 3.39 E
ATZ PN SHZ 01 A 50.7 292 90 PU 24.70 8.76 8.72 0.00 0.04 1.18 W 0.298 0.00 249 2 4.57 E
MTUMZPN SHZ 01 A 60.4 309 90 PU 26.15 10.21 10.29 0.00 -0.08 1.18 W 0.927 0.00 106 3.75 E
GLFBZPN SHZ 01 A 98.8 316 90 P 32.52 16.58 16.53 0.00 0.05 1.18 W 0.959 0.00 90.0 3.64 E
RE9A7AM EHZ 00 A100.3 358 90 P 3 35.03 19.09 16.78 0.00 2.31* 0.00 W 0.000 0.00 45.0 4 2.97XE
LCGPZPN SHZ 01 A108.5 315 90 P 3 34.67 18.73 18.11 0.00 0.62* 0.00 W 0.000 0.00 84.0 3.58 E
B073 PB EHZ -- A125.3 139 90 PD 3 36.79 20.85 20.84 0.00 0.01 0.29 W 0.978 0.00 67.0 3.38 E
B054 PB EHZ -- A137.6 328 90 P 3 37.38 21.44 22.85 0.00 -1.41* 0.00 W 0.000 0.00 59.0 3.27 E
B057 PB EHZ -- A171.5 323 90 PU 3 41.00 25.06 28.35 0.00 -3.29* 0.00 W 0.000 0.00 55.0 2 3.24 E