Earthquake record › seal of 2026-08-27

The USGS Feed as Sealed on 2026-08-27

550 events, exactly as the feed presented them at the moment we read it. Values on this page are what USGS asserted on this date — some of them have since been revised, and this page deliberately does not follow those revisions.

← 2026-08-26 · 2026-08-28 →

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 An event that appeared in the feed and was superseded between two of our seals is not in this archive at all.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.
This seal is wider than a day. The feed was collected 4 times on this date (00:05 and 22:09 UTC), so it covers more than 24 source-hours and holds more events than a single-run seal for a collection reason, not a seismic one.

228 of these events were already present in an earlier seal — the feed window overlaps our seal interval, so an event near the boundary is read twice. They are the only events in which a revision is detectable, and they are counted, not deduplicated away.

Review status as sealed: reviewed 369, automatic 181. 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.

By magnitude

MagnitudeEvents
Below M1.0182
M1.0 – M1.9225
M2.0 – M2.991
M3.0 – M3.914
M4.0 – M4.930
M5.0 and above8
No magnitude published0

42 of 550 events in this seal 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 your area

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

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Largest events in this seal

MagnitudePlace, as publishedReview statusSeal
M6.00145 km N of Caluula, Somaliareviewed2026-08-27
M5.60212 km E of Onagawa Chō, Japanreviewed2026-08-27
M5.30Volcano Islands, Japan regionreviewed2026-08-27
M5.3054 km NNE of Labuan Bajo, Indonesiareviewed2026-08-27
M5.2055 km NW of Kodāri̇̄, Nepalreviewed2026-08-27
M5.10South Atlantic Oceanreviewed2026-08-27
M5.0054 km NNW of Ende, Indonesiareviewed2026-08-27
M5.00western Xizangreviewed2026-08-27
M4.9035 km S of Lata, Solomon Islandsreviewed2026-08-27
M4.904 km E of Jordán, Colombiareviewed2026-08-27
M4.9042 km NE of Ruteng, Indonesiareviewed2026-08-27
M4.90Indian Ocean Triple Junctionreviewed2026-08-27
M4.903 km WNW of Mangili, Philippinesreviewed2026-08-27
M4.80215 km NNE of Lospalos, Timor Lestereviewed2026-08-27
M4.80southwest of Africareviewed2026-08-27
M4.80147 km E of Miyako, Japanreviewed2026-08-27
M4.80195 km SE of Akutan, Alaskareviewed2026-08-27
M4.8063 km NE of Kuji, Japanreviewed2026-08-27
M4.7082 km NE of Otrada, Russiareviewed2026-08-27
M4.7034 km NNE of Ruteng, Indonesiareviewed2026-08-27

Where they were, as USGS wrote it

State or territoryEvents
California189
Alaska136
Texas48
Utah42
Hawaii25
New Mexico21
Washington16
Puerto Rico11
Oklahoma6
Nevada5
Oregon4
Montana2
the U.S. Virgin Islands2
the Northern Mariana Islands1
Tennessee1
Wyoming1

40 of 550 events in this seal carry a place tail we do not map to a US state — most of them are outside the US. They are counted here and left unassigned rather than guessed at.

How this seal was collected

SealWe read atSource last modifiedHTTPSource
2026-08-272026-08-27T00:05:13+00:00Thu, 27 Aug 2026 00:04:38 GMT200source file
Days we did not seal. 69 seals span 77 calendar days, so these days inside the span have no sealed copy: 2026-07-04, 2026-07-15, 2026-08-14, 2026-08-15, 2026-08-16, 2026-08-17, 2026-08-22, 2026-08-23. 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), 2026-08-18 (2 runs, 05:41 and 23:15 UTC), 2026-08-24 (12 runs, 00:43 and 11:00 UTC), 2026-08-25 (11 runs, 02:00 and 22:09 UTC), 2026-08-26 (4 runs, 00:05 and 22:05 UTC), 2026-08-27 (4 runs, 00:05 and 22:09 UTC), 2026-08-28 (4 runs, 00:05 and 22:08 UTC), 2026-08-29 (4 runs, 00:08 and 22:05 UTC), 2026-08-30 (4 runs, 00:07 and 22:05 UTC), 2026-08-31 (4 runs, 00:05 and 22:08 UTC), 2026-09-01 (4 runs, 00:06 and 22:10 UTC), 2026-09-02 (4 runs, 00:05 and 22:05 UTC), 2026-09-03 (4 runs, 00:09 and 22:09 UTC), 2026-09-04 (4 runs, 00:07 and 22:08 UTC), 2026-09-05 (4 runs, 00:08 and 22:06 UTC), 2026-09-06 (4 runs, 00:09 and 22:08 UTC), 2026-09-07 (4 runs, 00:09 and 22:05 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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