This alert expired on 13 May 2026 at 21:30 UTC. It is kept here as a record.
It is the 3rd strongest of the 14 detections recorded within 20 km of this point since 11 April 2026. The last comparable one was on 11 April 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 13 at 2:24PM MDT until May 13 at 3:30PM MDT by NWS Salt Lake City UT
Nearby, since 11 April 2026
- July 30, 2026 · score 49 · 14.8 km
- June 7, 2026 · score 22 · 18.3 km
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 59 % 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 | 59% |
| Coordinates | 41.0783, -112.7667 |
| Nearest City | Syracuse (59 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-13T20:24:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.222df51123b8d11f26ba9cafee2a5a02 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Box Elder, UT; Davis, UT; Tooele, UT; Weber, UT; Box Elder, UT; Tooele, UT |
| Headline | Severe Thunderstorm Warning issued May 13 at 2:24PM MDT until May 13 at 3:30PM MDT by NWS Salt Lake City UT |
| Expires | 2026-05-13T15:30:00-06:00 |
| SenderName | NWS Salt Lake City UT |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.222df51123b8d11f26ba9cafee2a5a02317550f9.001.1","noaa_urn:oid:2.49.0.1.840.0.ff6e7be86b6419edfe2974db6f7f0227644ed311.001.1"] |
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.