This alert expired on 23 June 2026 at 00:30 UTC. It is kept here as a record.
No stronger detection stands among the 65 recorded within 20 km of this point since 5 May 2026 — 6 others scored the same. Another comparable one was recorded here earlier the same day. 12 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued June 22 at 5:56PM MDT until June 22 at 6:30PM MDT by NWS Cheyenne WY
Nearby, since 5 May 2026
- May 21, 2026 · score 46 · 18.3 km
- June 23, 2026 · score 46 · 21.5 km
How we know
Confirmed by 17 independent sources, including NOAA.
Our own score for this event is 46 out of 100, at 68 % 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 | Critical |
| Calamity Score (ours) | 46 / 100 |
| Our confidence | 68% |
| Coordinates | 41.3100, -103.5060 |
| Nearest City | Cheyenne (112 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-22T23:56:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.0e02c8ea9fa75796381c015712a0bd10 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Banner, NE; Scotts Bluff, NE; Scotts Bluff, NE; Washington, CO |
| Headline | Tornado Warning issued June 22 at 5:56PM MDT until June 22 at 6:30PM MDT by NWS Cheyenne WY |
| Expires | 2026-06-22T18:30:00-06:00 |
| SenderName | NWS Cheyenne WY |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0e02c8ea9fa75796381c015712a0bd108022192e.001.1","noaa_urn:oid:2.49.0.1.840.0.232f2292e7b2d4b724cb8b728152fd042abbfc36.002.1","noaa_urn:oid:2.49.0.1.840.0.27025b3ef9c52a3376a5687bd42702afc3518741.002.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 3 |
| Iem Unit | Inch |
| Iem City | 6 WSW North Sterling Re |
| Iem County | Logan |
| Iem State | CO |
| Iem Wfo | BOU |
| MergedSources | [{"id":"iem_H_41.040_-103.660_1782165900000","source":"iem","severity":"low","severityValue":25,"timestamp":1782165900000,"latitude":41.04,"longitude":-103.66},{"id":"iem_H_41.240_-103.700_1782161040000","source":"iem","severity":"low","severityValue":25,"timestamp":1782161040000,"latitude":41.24,"longitude":-103.7},{"id":"iem_H_41.240_-103.720_1782161520000","source":"iem","severity":"low","severityValue":25,"timestamp":1782161520000,"latitude":41.24,"longitude":-103.72},{"id":"iem_H_40.990_-103.660_1782166080000","source":"iem","severity":"low","severityValue":25,"timestamp":1782166080000,"latitude":40.99,"longitude":-103.66},{"id":"iem_H_41.140_-103.660_1782162780000","source":"iem","severity":"low","severityValue":25,"timestamp":1782162780000,"latitude":41.14,"longitude":-103.66},{"id":"iem_W_41.140_-103.720_1782162300000","source":"iem","severity":"low","severityValue":25,"timestamp":1782162300000,"latitude":41.14,"longitude":-103.72},{"id":"iem_H_41.230_-103.660_1782160320000","source":"iem","severity":"low","severityValue":25,"timestamp":1782160320000,"latitude":41.23,"longitude":-103.66},{"id":"iem_H_41.230_-103.660_1782162000000","source":"iem","severity":"low","severityValue":25,"timestamp":1782162000000,"latitude":41.23,"longitude":-103.66},{"id":"iem_G_40.680_-103.520_1782168300000","source":"iem","severity":"low","severityValue":25,"timestamp":1782168300000,"latitude":40.68,"longitude":-103.52},{"id":"iem_H_41.110_-103.660_1782162780000","source":"iem","severity":"low","severityValue":25,"timestamp":1782162780000,"latitude":41.11,"longitude":-103.66},{"id":"iem_H_41.260_-103.730_1782162180000","source":"iem","severity":"low","severityValue":25,"timestamp":1782162180000,"latitude":41.26,"longitude":-103.73},{"id":"iem_H_41.300_-103.740_1782159840000","source":"iem","severity":"low","severityValue":25,"timestamp":1782159840000,"latitude":41.3,"longitude":-103.74},{"id":"iem_W_41.130_-103.660_1782162060000","source":"iem","severity":"low","severityValue":25,"timestamp":1782162060000,"latitude":41.13,"longitude":-103.66},{"id":"iem_H_41.090_-103.470_1782163680000","source":"iem","severity":"low","severityValue":25,"timestamp":1782163680000,"latitude":41.09,"longitude":-103.47},{"id":"iem_H_41.500_-104.130_1782157140000","source":"iem","severity":"low","severityValue":25,"timestamp":1782157140000,"latitude":41.5,"longitude":-104.13},{"id":"iem_H_40.750_-103.380_1782166980000","source":"iem","severity":"low","severityValue":25,"timestamp":1782166980000,"latitude":40.75,"longitude":-103.38}] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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?
Calamity.live data shows a weather event with CalamityScore 46/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.