Right now
The most recent data we hold from NOAA arrived 28 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 3 June 2026 at 03:30 UTC. It is kept here as a record.
It is the 29th strongest of the 182 detections recorded within 20 km of this point since 27 April 2026. The last comparable one was on 2 June 2026. 18 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued June 2 at 8:18PM MDT until June 2 at 9:00PM MDT by NWS Cheyenne WY
Nearby, since 27 April 2026
- September 5, 2026 · score 16 · 0.0 km
- August 31, 2026 · score 16 · 0.0 km
- August 12, 2026 · score 22 · 0.0 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 | 41.5000, -99.9000 |
| Nearest City | North Platte (84 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-03T02:18:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.20ff08ee576f9af2f71e32cd8b0b1ac6 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Box Butte, NE; Dawes, NE; Sioux, NE; Goshen, WY; Niobrara, WY; Cherry, NE; Sheridan, NE |
| Headline | Severe Thunderstorm Watch issued June 2 at 8:18PM MDT until June 2 at 9:00PM MDT by NWS Cheyenne WY |
| Expires | 2026-06-02T21:30:00-06:00 |
| SenderName | NWS Cheyenne WY |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.20ff08ee576f9af2f71e32cd8b0b1ac6c4a13dfb.002.1","noaa_urn:oid:2.49.0.1.840.0.6431d7e55119882a0699a456ad0244829c62b930.001.1"] |
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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