This alert expired on 28 August 2026 at 22:30 UTC. It is kept here as a record.
No stronger detection stands among the 7 recorded within 20 km of this point since 13 May 2026 — 2 others scored the same. The last comparable one was on 13 May 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 28 at 3:59PM MDT until August 28 at 4:30PM MDT by NWS Salt Lake City UT
An estimated 1,554,188 people live within 50 km of this point.
Nearby, since 13 May 2026
- August 28, 2026 · score 52 · 6.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100, at 79 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 79% |
| Coordinates | 40.3090, -111.9740 |
| Nearest City | Eagle Mountain (3 km) |
| Population Exposed | 1.6M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-28T21:59:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Davis, UT; Salt Lake, UT; Tooele, UT; Utah, UT; Carbon, UT; Emery, UT; Juab, UT; Sanpete, UT; Tooele, UT; Utah, UT |
| Headline | Severe Thunderstorm Warning issued August 28 at 3:59PM MDT until August 28 at 4:30PM MDT by NWS Salt Lake City UT |
| Expires | 2026-08-28T16:30:00-06:00 |
| SenderName | NWS Salt Lake City UT |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ce31eb53e817933fe409788be08931fdb43bc342.001.1","noaa_urn:oid:2.49.0.1.840.0.0d93f2e51fd9a0e40523159a3ce7cad79c02323b.001.1"] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 10 February 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.
Calamity.live data shows a weather event with CalamityScore 52/100, near Eagle Mountain (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.