This alert expired on 30 May 2026 at 22:30 UTC. It is kept here as a record.
It is the 25th strongest of the 38 detections recorded within 20 km of this point since 9 May 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 30 at 4:14PM MDT until May 30 at 4:30PM MDT by NWS Cheyenne WY
Nearby, since 9 May 2026
- May 21, 2026 · score 22 · 2.4 km
- May 9, 2026 · score 22 · 10.6 km
- June 9, 2026 · score 22 · 13.7 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 60 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 16 / 100 |
| Our confidence | 60% |
| Coordinates | 40.7910, -103.5752 |
| Nearest City | Greeley (104 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-30T22:14:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.d68bef0c3547f3f28909617fdd146305 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Kimball, NE; Yuma, CO; Dundy, NE; Kimball, NE; Laramie, WY and 1 more areas |
| Headline | Severe Thunderstorm Warning issued May 30 at 4:14PM MDT until May 30 at 4:30PM MDT by NWS Cheyenne WY |
| Expires | 2026-05-30T16:30:00-06:00 |
| SenderName | NWS Cheyenne WY |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d68bef0c3547f3f28909617fdd146305cab01439.001.1","noaa_urn:oid:2.49.0.1.840.0.42e3e009691b61be68e0222314aa06d949bb0da2.001.1","noaa_urn:oid:2.49.0.1.840.0.462a901b5fe69e536c1816978a77fa43a8e514ba.001.1","noaa_urn:oid:2.49.0.1.840.0.caf8c1a828cae2837067541ae32766641c4bdc22.001.1"] |
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 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.
Want to know when something happens in this area?
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 185 scientific monitoring sources.