Right now
The most recent data we hold from NOAA arrived 2 minutes 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 1 July 2026 at 02:30 UTC. It is kept here as a record.
It is the 13th strongest of the 93 detections recorded within 20 km of this point since 23 April 2026. The last comparable one was on 25 June 2026. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 30 at 8:00PM MDT until June 30 at 8:30PM MDT by NWS Cheyenne WY
Nearby, since 23 April 2026
- August 10, 2026 · score 22 · 2.6 km
- July 1, 2026 · score 22 · 4.0 km
- August 10, 2026 · score 22 · 6.2 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 59 % 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 | 59% |
| Coordinates | 40.9889, -102.8614 |
| Nearest City | Cheyenne (165 km) |
| Impact Tier | minor |
| Timestamp | 2026-07-01T02:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.0042f5aedbdae2991773181cf02e672d |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cheyenne, NE; Morrill, NE; Logan, CO |
| Headline | Severe Thunderstorm Warning issued June 30 at 8:00PM MDT until June 30 at 8:30PM MDT by NWS Cheyenne WY |
| Expires | 2026-06-30T20:30:00-06:00 |
| SenderName | NWS Cheyenne WY |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0042f5aedbdae2991773181cf02e672d7bc0aab5.001.1","noaa_urn:oid:2.49.0.1.840.0.71328c2fbb1be41f2b7db2b30e1f9678770c229b.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?