Earthquake record › California › M1.0 – M1.9

M1.0 – M1.9 Events in California

2,123 events in the M1.0 – M1.9 range whose USGS place string ends in California, across 45 of our daily seals.

What this archive is, exactly. The USGS all_day feed holds the last 24 hours and is overwritten in place. We seal one dated copy of it per day. An event that appeared in the feed and was superseded between two of our seals is not in this archive at all. These pages are a record of what USGS asserted at each seal — they are not a complete catalogue of earthquakes, and nothing here should be read as one.

Review status as sealed: automatic 1,665, reviewed 458. An automatic value is a machine solution USGS may still revise; a reviewed value has had a human look at it. Which one you are reading matters more than the magnitude itself.

0 of 2,123 events in California in this range were sealed at or above M3.5 — the magnitude Texas Railroad Commission seismic-response conditions are written around. That is a count of what the feed said, not a determination about any permit, operator or well.

Get told when the record changes for California

USGS publishes the last day and overwrites it, then revises events in place — automatic becomes reviewed, magnitudes move, and the old value stops existing everywhere. We seal a dated copy every day. Leave your email and we'll tell you when an event in California is revised after the fact, with what it said before.

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Largest in this range

MagnitudePlace, as publishedReview statusSeal
M1.997 km S of Brawley, CAautomatic2026-07-23
M1.9917 km WSW of Johannesburg, CAautomatic2026-07-02
M1.9918 km NNE of Indio, CAautomatic2026-07-03
M1.9919 km WSW of Johannesburg, CAreviewed2026-07-14
M1.993 km SE of Aromas, CAautomatic2026-07-22
M1.9915 km NE of New Idria, CAautomatic2026-07-25
M1.9916 km S of Bridgeport, CAautomatic2026-07-30
M1.9922 km NE of San Ardo, CAautomatic2026-08-05
M1.993 km NNW of Orange, CAautomatic2026-07-08
M1.984 km SE of Loma Linda, CAreviewed2026-07-27
M1.985 km NNW of The Geysers, CAautomatic2026-07-11
M1.9814 km SW of Manton, CAautomatic2026-07-12
M1.987 km ESE of Cloverdale, CAautomatic2026-07-17
M1.9810 km NW of Pinnacles, CAautomatic2026-07-23
M1.973 km NE of Ocotillo Wells, CAautomatic2026-07-19
M1.977 km S of Brawley, CAautomatic2026-07-23
M1.977 km S of Brawley, CAautomatic2026-07-23
M1.977 km S of Brawley, CAautomatic2026-07-23
M1.978 km SE of Valle Vista, CAreviewed2026-07-13
M1.974 km NW of Petrolia, CAautomatic2026-07-06

All magnitudes in California · M1.0 – M1.9 worldwide.

Days we did not seal. 45 seals span 47 calendar days, so these days inside the span have no sealed copy: 2026-07-04, 2026-07-15. A missing day means we did not read the feed. It does not mean nothing happened, and those dates return a 404 here rather than a page reading zero.
One seal is wider than the others. These dates were collected more than once: 2026-07-16 (2 runs, 00:48 and 13:42 UTC). A day with two runs covers more than 24 source-hours, so its event count is larger for a collection reason and not a seismic one. Do not read it as a busy day.

Compiled from dated copies of the U.S. Geological Survey's public all_day realtime feed (a work of the US government, in the public domain). Values are reproduced exactly as USGS published them on the date shown and may since have been revised; USGS is the authority on the current value of any event. These pages are provided for informational purposes only, carry no warranty of accuracy or completeness, and are not an earthquake warning, a safety notice, or engineering advice. Always verify against the USGS Earthquake Hazards Program before relying on any figure.

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