Right now
The most recent data we hold from NOAA arrived 36 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 June 2026 at 22:30 UTC. It is kept here as a record.
It is the 2nd strongest of the 43 detections recorded within 20 km of this point since 9 April 2026. The last comparable one was on 22 May 2026. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 1 at 4:16PM MDT until June 1 at 4:30PM MDT by NWS Cheyenne WY
Nearby, since 9 April 2026
- May 10, 2026 · score 22 · 18.6 km
- June 23, 2026 · score 46 · 19.1 km
- July 9, 2026 · score 22 · 19.4 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 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) | 22 / 100 |
| Our confidence | 60% |
| Coordinates | 39.7569, -102.6899 |
| Nearest City | Parker (179 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-01T22:16:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.912db696cbeaa3e31a06d77ee643671c |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Laramie, WY; Box Butte, NE; Morrill, NE; Scotts Bluff, NE; Sioux, NE; Adams, CO; Morgan, CO; Washington, CO and 6 more areas |
| Headline | Severe Thunderstorm Warning issued June 1 at 4:16PM MDT until June 1 at 4:30PM MDT by NWS Cheyenne WY |
| Expires | 2026-06-01T16:30:00-06:00 |
| SenderName | NWS Cheyenne WY |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.912db696cbeaa3e31a06d77ee643671ce946cea8.001.1","noaa_urn:oid:2.49.0.1.840.0.88ad9f05f7d82a13d235c9484c892f0379395deb.001.1","noaa_urn:oid:2.49.0.1.840.0.47b66c3d23878346d76a8738152a9c22024a0478.001.1","noaa_urn:oid:2.49.0.1.840.0.206bd35e5dcac3ff960df27b99ee8eecbf061311.001.1","noaa_urn:oid:2.49.0.1.840.0.d88a76058df804d7e486c8de519d00c983fb1a96.001.1","noaa_urn:oid:2.49.0.1.840.0.3405db22ba1058b1a98c5b26b49b7eee91dc0dbd.001.1","noaa_urn:oid:2.49.0.1.840.0.ccb4f7df2c3a966830632ea2815251b4cd80f074.001.1","noaa_urn:oid:2.49.0.1.840.0.71c7061abee26a62a7b08e00edab0c22e1a7171b.001.1","noaa_urn:oid:2.49.0.1.840.0.64c7a5ce748a83c9a291bf684ce61f7edf9c3645.001.1"] |
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.
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