Earthquake record › Alaska › M3.0 – M3.9

M3.0 – M3.9 Events in Alaska

155 events in the M3.0 – M3.9 range whose USGS place string ends in Alaska, across 41 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 An event that appeared in the feed and was superseded between two of our seals is not in this archive at all.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: reviewed 107, automatic 48. 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.

53 of 155 events in Alaska 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 Alaska

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 Alaska is revised after the fact, with what it said before.

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Largest in this range

MagnitudePlace, as publishedReview statusSeal
M3.9051 km NNE of Aleneva, Alaskareviewed2026-06-30
M3.90232 km ESE of Attu Station, Alaskareviewed2026-06-30
M3.90193 km SE of Perryville, Alaskaautomatic2026-08-06
M3.9045 km S of Sand Point, Alaskareviewed2026-06-23
M3.90265 km SE of Attu Station, Alaskareviewed2026-06-24
M3.90229 km ESE of Attu Station, Alaskareviewed2026-08-02
M3.90112 km SW of Atka, Alaskareviewed2026-07-27
M3.90128 km SSE of Atka, Alaskareviewed2026-07-27
M3.8080 km W of Akhiok, Alaskaautomatic2026-07-14
M3.80221 km ESE of Attu Station, Alaskareviewed2026-07-28
M3.80230 km ESE of Attu Station, Alaskareviewed2026-07-29
M3.80102 km SSE of Atka, Alaskareviewed2026-07-31
M3.80239 km ESE of Attu Station, Alaskareviewed2026-08-04
M3.8065 km ESE of Pedro Bay, Alaskaautomatic2026-08-06
M3.70Rat Islands, Aleutian Islands, Alaskareviewed2026-07-14
M3.7091 km SE of Atka, Alaskareviewed2026-07-27
M3.7028 km WNW of Ivanof Bay, Alaskareviewed2026-07-29
M3.7096 km SW of Atka, Alaskareviewed2026-07-13
M3.7098 km SE of False Pass, Alaskareviewed2026-07-16
M3.6011 km ENE of Unalakleet, Alaskaautomatic2026-07-01

All magnitudes in Alaska · M3.0 – M3.9 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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