Earthquake record › what the record changed
Events USGS revised in place after we had already sealed them — both values, and the date of each.
Read the denominator first. A revision can only be seen in an event we sealed more than once. The feed is a rolling 24-hour window and we seal once a day, so only events near a seal boundary are ever re-read: 10,493 of 10,578 events appear in exactly one seal. The comparable population is 85 events, and every figure on this page divides by that.
| Claim | Events | What it means |
|---|---|---|
| USGS touched the record | 16 | the feed's own updated timestamp moved between our seals |
| A published field changed | 10 | we can show you the before and the after |
| Magnitude or review status changed | 6 | the subset with a downstream consequence |
| Re-read, nothing changed | 75 | the negative control: most re-reads are identical |
The first row is larger than the second on purpose. USGS moving its updated timestamp tells us it rewrote the record; it does not tell us that anything we can see is different. Only the second row is a change we can demonstrate, and only the second row is counted as a revision anywhere on this site.
None. Across the 85 events we could compare, no revision moved a magnitude across M3.5 in either direction. The mechanism below is real and demonstrated; we have not yet caught it happening at a magnitude anyone regulates, and we will not pretend otherwise.
| Event, as USGS named it | Between these seals | What changed |
|---|---|---|
| 12 km N of Ocotillo Wells, CA | 2026-07-23 → 2026-07-24 | magnitude: 1.65967180482867 → 1.59 review status: automatic → reviewed significance: 42 → 39 longitude: -116.122665405273 → -116.125666666667 latitude: 33.252498626709 → 33.2535 depth (km): 7.78000020980835 → 7.65 title: M 1.7 - 12 km N of Ocotillo Wells, CA → M 1.6 - 12 km N of Ocotillo Wells, CA |
| 26 km NNW of Mianzhu, Deyang, Sichuan, China | 2026-07-05 → 2026-07-06 | significance: 387 → 388 |
| 33 km WSW of Ackerly, Texas | 2026-07-05 → 2026-07-06 | magnitude: 1.0 → 1.1 review status: automatic → reviewed significance: 15 → 19 longitude: -102.042 → -102.044 latitude: 32.398 → 32.403 depth (km): 4.6886 → 8.7646 title: M 1.0 - 33 km WSW of Ackerly, Texas → M 1.1 - 33 km WSW of Ackerly, Texas |
| 36 km SSW of Los Ybanez, Texas | 2026-07-05 → 2026-07-06 | magnitude: 1.1 → 1.2 origin time: 2026-07-05T18:07:24+00:00 → 2026-07-05T18:07:25+00:00 review status: automatic → reviewed significance: 19 → 22 longitude: -102.12 → -102.115 latitude: 32.435 → 32.438 depth (km): 3.9116 → 7.1045 title: M 1.1 - 36 km SSW of Los Ybanez, Texas → M 1.2 - 36 km SSW of Los Ybanez, Texas |
| 12 km ESE of Gilroy, CA | 2026-07-05 → 2026-07-06 | significance: 139 → 138 |
| 21 km ENE of Little Lake, CA | 2026-07-05 → 2026-07-06 | review status: automatic → reviewed |
| 33 km WSW of Trapper Creek, Alaska | 2026-07-05 → 2026-07-06 | significance: 74 → 75 |
| 120 km S of Isangel, Vanuatu | 2026-06-23 → 2026-06-24 | place: 126 km S of Isangel, Vanuatu → 120 km S of Isangel, Vanuatu origin time: 2026-06-23T13:58:36+00:00 → 2026-06-23T13:58:34+00:00 longitude: 169.1101 → 169.2307 latitude: -20.6721 → -20.6302 depth (km): 30.168 → 21.543 title: M 5.3 - 126 km S of Isangel, Vanuatu → M 5.3 - 120 km S of Isangel, Vanuatu |
| 2 km E of Winchester, CA | 2026-06-23 → 2026-06-24 | review status: automatic → reviewed |
| 7 km N of Beaumont, CA | 2026-06-23 → 2026-06-24 | magnitude: 0.65 → 0.54 review status: automatic → reviewed significance: 6 → 4 longitude: -116.967 → -116.971833333333 latitude: 33.9901666666667 → 33.9915 depth (km): 8.77 → 9.04 title: M 0.7 - 7 km N of Beaumont, CA → M 0.5 - 7 km N of Beaumont, CA |
| Field | Events |
|---|---|
| significance | 7 |
| review status | 6 |
| depth (km) | 5 |
| latitude | 5 |
| longitude | 5 |
| title | 5 |
| magnitude | 4 |
| origin time | 2 |
| place | 1 |
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.
Email me revisions in my area →Work email only. No newsletter, no obligation.
Prefer to just buy it? See the custom, source-cited close file, priced, with a sample deliverable.
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.