Right now
The most recent data we hold from NOAA arrived 1 minute ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 30 May 2026 at 22:30 UTC. It is kept here as a record.
It is the 22nd strongest of the 102 detections recorded within 20 km of this point since 28 April 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 30 at 3:55PM MDT until May 30 at 4:30PM MDT by NWS Cheyenne WY
Nearby, since 28 April 2026
- May 31, 2026 · score 28 · 2.0 km
- May 30, 2026 · score 46 · 4.4 km
- June 4, 2026 · score 16 · 8.2 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 61 % 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) | 22 / 100 |
| Our confidence | 61% |
| Coordinates | 41.1325, -103.8667 |
| Nearest City | Cheyenne (80 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-30T21:55:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.9d3438a4e1451171faf16244bead91f1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Kimball, NE |
| Headline | Severe Thunderstorm Warning issued May 30 at 3:55PM 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 | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9d3438a4e1451171faf16244bead91f132366ddd.001.1","noaa_urn:oid:2.49.0.1.840.0.d70a1065cc6346ade7fad786015bc9934006cc69.002.1"] |
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.
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