Right now
The most recent data we hold from NOAA arrived 9 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 22:21 UTC. It is kept here as a record.
It is the 13th strongest of the 32 detections recorded within 20 km of this point since 10 May 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 1 at 4:12PM MDT until June 1 at 4:15PM MDT by NWS Cheyenne WY
Nearby, since 10 May 2026
- May 22, 2026 · score 46 · 17.3 km
- June 25, 2026 · score 46 · 17.4 km
- June 1, 2026 · score 46 · 21.5 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 | 39.9719, -103.0753 |
| Nearest City | Evans (144 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-01T22:12:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.f918231224db450ad29ae674fd747ba5 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Scotts Bluff, NE; Sioux, NE; Goshen, WY; Box Butte, NE; Morrill, NE; Scotts Bluff, NE; Sioux, NE; Laramie, WY and 9 more areas |
| Headline | Severe Thunderstorm Warning issued June 1 at 4:12PM MDT until June 1 at 4:15PM MDT by NWS Cheyenne WY |
| Expires | 2026-06-01T16:21:00-06:00 |
| SenderName | NWS Cheyenne WY |
| HasExactCoords | true |
| MergedCount | 12 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f918231224db450ad29ae674fd747ba5d96509da.001.1","noaa_urn:oid:2.49.0.1.840.0.88ad9f05f7d82a13d235c9484c892f0379395deb.001.1","noaa_urn:oid:2.49.0.1.840.0.7bdfede02feceaae381fff0189d96d29f25cc020.001.1","noaa_urn:oid:2.49.0.1.840.0.47b66c3d23878346d76a8738152a9c22024a0478.001.1","noaa_urn:oid:2.49.0.1.840.0.1a21c2da2254402f6ed060fe5a279b8f347713ac.001.1","noaa_urn:oid:2.49.0.1.840.0.206bd35e5dcac3ff960df27b99ee8eecbf061311.001.1","noaa_urn:oid:2.49.0.1.840.0.ccb4f7df2c3a966830632ea2815251b4cd80f074.001.1","noaa_urn:oid:2.49.0.1.840.0.254168f1f22087eec0ccc3b9103e63364f7d1a8c.001.1","noaa_urn:oid:2.49.0.1.840.0.71c7061abee26a62a7b08e00edab0c22e1a7171b.001.1","noaa_urn:oid:2.49.0.1.840.0.c8f183c8e945e1c46e846b903b250d9c247e69fc.001.1","noaa_urn:oid:2.49.0.1.840.0.6d7729c705bc7f3d0c5ef109fd9864d2d2cf9dea.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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