This alert expired on 13 May 2026 at 22:30 UTC. It is kept here as a record.
Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 13 at 3:57PM MDT until May 13 at 4:30PM MDT by NWS Salt Lake City UT
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 60 % 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) | 22 / 100 |
| Our confidence | 60% |
| Coordinates | 39.7310, -111.2500 |
| Nearest City | Payson (53 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-13T21:57:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.c138e525e4f9f37dbc8ff901923e5af1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Juab, UT; Sanpete, UT; Utah, UT; Carbon, UT; Duchesne, UT; Emery, UT; Sanpete, UT; Utah, UT; Wasatch, UT |
| Headline | Severe Thunderstorm Warning issued May 13 at 3:57PM MDT until May 13 at 4:30PM MDT by NWS Salt Lake City UT |
| Expires | 2026-05-13T16:30:00-06:00 |
| SenderName | NWS Salt Lake City UT |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c138e525e4f9f37dbc8ff901923e5af166fe349d.001.1","noaa_urn:oid:2.49.0.1.840.0.44c842e692cbbaa44692748bd2ec30800f5080b5.001.1"] |
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 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.