Right now
The most recent data we hold from USGS arrived 8 minutes 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.
No stronger detection stands among the 16 recorded within 20 km of this point since 6 June 2026 — 15 others scored the same. The last comparable one was on 3 September 2026. 3 more were recorded here in the fortnight before it.
What the source measured
USGS reported: 12 km SW of Granger, Wyoming
USGS recorded magnitude 3.4 at a depth of 4 km.
The seismic region given by the source is 12 km SW of Granger, Wyoming.
Nearby, since 6 June 2026
- July 9, 2026 · score 0 · 16.9 km
- July 25, 2026 · score 0 · 17.0 km
- August 28, 2026 · score 0 · 17.0 km
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.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v5. 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 |
| Legacy data-support index | 0.50/1 |
| Coordinates | 41.5153, -110.0842 |
| Nearest City | Rock Springs (74 km) |
| Urban exposure index (PEI) | 0 within 15 km |
| Impact Tier | minor |
| Timestamp | 2026-09-15T04:33:10.390Z |
| Source | https://earthquake.usgs.gov/earthquakes/eventpage/uu80156956 |
Physical priority index · v5. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: usgs_canada. Occurrence: 2026-09-15T04:33:10.390Z.
First archived: 2026-09-15T05:13:41.952Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Mag | 3.38 |
| Depth | 4.39 |
| Sig | 176 |
| Tsunami | false |
| Region | 12 km SW of Granger, Wyoming |
| Usgs Mag | 3.38 |
| Usgs Depth | 4.39 |
| Usgs Tsunami | false |
| Usgs Felt | 1 |
| Usgs Sig | 176 |
| MergedSources | [{"id":"usgs_uu80156956","source":"usgs","severity":"low","severityValue":20.28,"timestamp":1789446790390,"latitude":41.5153333333333,"longitude":-110.084166666667}] |
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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