This alert expired on 31 August 2026 at 21:15 UTC. It is kept here as a record.
It is the 6th strongest of the 9 detections recorded within 20 km of this point since 29 August 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 31 at 2:30PM MDT until August 31 at 3:15PM MDT by NWS Salt Lake City UT
Nearby, since 29 August 2026
- August 30, 2026 · score 22 · 16.5 km
- August 31, 2026 · score 16 · 20.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100, at 61 % 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) | 16 / 100 |
| Our confidence | 61% |
| Coordinates | 39.4860, -112.4540 |
| Nearest City | Payson (87 km) |
| Impact Tier | minor |
| Timestamp | 2026-08-31T20:30:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.d2e9d51bf1b7141677448cea609c1a75fe990dc9.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Juab, UT; Millard, UT |
| Headline | Severe Thunderstorm Warning issued August 31 at 2:30PM MDT until August 31 at 3:15PM MDT by NWS Salt Lake City UT |
| Expires | 2026-08-31T15:15:00-06:00 |
| SenderName | NWS Salt Lake City UT |
| HasExactCoords | true |
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 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.