Right now
The most recent data we hold from USGS arrived 2 hours ago, and this point is in it.
One other detection within 20 km in the last 24 hours, <1 km from here.
Reported by USGS today.
It is one of only 2 we have recorded within 20 km of this point since 12 September 2026. One more was recorded here in the fortnight before it.
What the source measured
USGS reported: 21 km NE of Granger, Wyoming
USGS recorded magnitude 3.8 at a depth of 4 km.
The seismic region given by the source is 21 km NE of Granger, Wyoming.
How we know
One source: USGS. Not yet confirmed by a second, independent source.
Our own score for this event is 0 out of 100, at 51 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Earthquakes |
| Severity | Low |
| Calamity Score (ours) | 0 / 100 |
| Our confidence | 51% |
| Coordinates | 41.7490, -109.8087 |
| Nearest City | Rock Springs (54 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-12T05:25:49.280Z |
| Source | https://earthquake.usgs.gov/earthquakes/eventpage/uu80156391 |
Score Breakdown
Technical Details
| Mag | 3.82 |
| Depth | 3.98 |
| Sig | 225 |
| Tsunami | false |
| Region | 21 km NE of Granger, Wyoming |
| Usgs Mag | 3.82 |
| Usgs Depth | 3.98 |
| Usgs Tsunami | false |
| Usgs Felt | 1 |
| Usgs Mmi | 3.74 |
| Usgs Sig | 225 |
| MergedSources | [{"id":"usgs_uu80156391","source":"usgs","severity":"low","severityValue":22.919999999999998,"timestamp":1789190749280,"latitude":41.749,"longitude":-109.808666666667}] |
Safety Information
If you feel shaking: Drop, Cover, and Hold On. Move away from windows, heavy objects, and exterior walls. After shaking stops, check for injuries and structural damage. Be prepared for aftershocks, which can occur minutes to months after the mainshock. Follow instructions from local emergency management authorities.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
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