Right now
The most recent data we hold from NOAA arrived 4 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 22 June 2026 at 22:00 UTC. It is kept here as a record.
No stronger detection stands among the 42 recorded within 20 km of this point since 28 April 2026 — 11 others scored the same. The last comparable one was on 21 June 2026. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 22 at 3:51PM MDT until June 22 at 4:00PM MDT by NWS Cheyenne WY
Nearby, since 28 April 2026
- July 20, 2026 · score 16 · 8.2 km
- May 29, 2026 · score 22 · 19.3 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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 |
| Legacy data-support index | 0.62/1 |
| Coordinates | 41.9861, -104.1306 |
| Nearest City | Cheyenne (110 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Date | 2026-06-22 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.228bde23ecfd8e065206d45ac3693d8a |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-06-22 — time not reported.
First archived: 2026-06-22T21:52:24.306Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cheyenne, NE; Kimball, NE; Kimball, NE; Logan, CO and 3 more areas |
| Headline | Severe Thunderstorm Warning issued June 22 at 3:51PM MDT until June 22 at 4:00PM MDT by NWS Cheyenne WY |
| Expires | 2026-06-22T16:00:00-06:00 |
| SenderName | NWS Cheyenne WY |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.228bde23ecfd8e065206d45ac3693d8a633b69ef.001.1","noaa_urn:oid:2.49.0.1.840.0.e52b8828791be07dc9a08d3f75946c4832e44eb3.001.1","noaa_urn:oid:2.49.0.1.840.0.c1d1fe24970fc6674be416658c2a7ad9093cd4e5.001.1","noaa_urn:oid:2.49.0.1.840.0.0be1febd299fd689196c341b26fd26d93724fa1a.001.1","noaa_urn:oid:2.49.0.1.840.0.24ecd4b0d002f1386b16984b1928863aa966c9d4.002.1","noaa_urn:oid:2.49.0.1.840.0.a3b90e6b9371e061c229e2168d4fdca772edec3d.001.1","noaa_urn:oid:2.49.0.1.840.0.8011e960729caa998cf921454279683c510ddf96.001.1","noaa_urn:oid:2.49.0.1.840.0.09eea88f81fd70281f055e12a148f7c007f60f5c.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 6 NNW Albin |
| Iem County | Laramie |
| Iem State | WY |
| Iem Wfo | CYS |
| MergedSources | [{"id":"iem_H_41.500_-104.130_1782157140000","source":"iem","severity":"low","severityValue":25,"timestamp":1782157140000,"latitude":41.5,"longitude":-104.13}] |
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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