Earthquake record › seal of 2026-08-18

The USGS Feed as Sealed on 2026-08-18

301 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.

← 2026-08-13 · 2026-08-19 →

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 An event that appeared in the feed and was superseded between two of our seals is not in this archive at all.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 2 times on this date (05:41 and 23:15 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.

No event in this seal had appeared in an earlier one. Every event here was first seen on this date.

Review status as sealed: reviewed 199, automatic 102. 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 M1.079
M1.0 – M1.9131
M2.0 – M2.955
M3.0 – M3.917
M4.0 – M4.915
M5.0 and above4
No magnitude published0

21 of 301 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
M5.90269 km SSE of Dunhuang, Chinareviewed2026-08-18
M5.7095 km SW of Puerto Madero, Mexicoreviewed2026-08-18
M5.60154 km SSE of Teluk Dalam, Indonesiareviewed2026-08-18
M5.3035 km SSW of Jurm, Afghanistanreviewed2026-08-18
M4.902 km WSW of Granada, Spainreviewed2026-08-18
M4.9079 km N of Ruteng, Indonesiareviewed2026-08-18
M4.9076 km NW of Ende, Indonesiareviewed2026-08-18
M4.80south of the Fiji Islandsreviewed2026-08-18
M4.8046 km NNW of Ruteng, Indonesiareviewed2026-08-18
M4.8074 km N of Ruteng, Indonesiareviewed2026-08-18
M4.8072 km NW of Ende, Indonesiareviewed2026-08-18
M4.701 km WSW of Alhendín, Spainreviewed2026-08-18
M4.7080 km N of Ruteng, Indonesiareviewed2026-08-18
M4.7072 km NNE of Ruteng, Indonesiareviewed2026-08-18
M4.605 km ENE of Escúzar, Spainreviewed2026-08-18
M4.50south of the Fiji Islandsreviewed2026-08-18
M4.30241 km S of Sanana, Indonesiareviewed2026-08-18
M4.3039 km WSW of Kyelang, Indiareviewed2026-08-18
M4.0033 km S of Champerico, Guatemalareviewed2026-08-18
M3.877 km SSE of La Romana, Dominican Republicreviewed2026-08-18

Where they were, as USGS wrote it

State or territoryEvents
California127
Alaska67
Hawaii23
Texas22
New Mexico13
Nevada8
Washington7
Utah4
Puerto Rico3
the U.S. Virgin Islands3
Montana2
Idaho1
Oklahoma1

20 of 301 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
2026-08-182026-08-18T23:15:06+00:00Tue, 18 Aug 2026 23:14:43 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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