This alert expired on 17 May 2026 at 23:00 UTC. It is kept here as a record.
It is the 7th strongest of the 47 detections recorded within 20 km of this point since 11 April 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 17 at 4:11PM MDT until May 17 at 5:00PM MDT by NWS Goodland KS
Nearby, since 11 April 2026
- May 22, 2026 · score 22 · 3.2 km
- May 21, 2026 · score 22 · 6.5 km
- May 17, 2026 · score 46 · 20.0 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 63 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 22 / 100 |
| Our confidence | 63% |
| Coordinates | 39.2080, -102.8350 |
| Nearest City | Cimarron Hills (166 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-17T22:11:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.7d14f3e2c3aabbbd15b0da3a6748b6a4 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cheyenne, CO; Kit Carson, CO |
| Headline | Severe Thunderstorm Warning issued May 17 at 4:11PM MDT until May 17 at 5:00PM MDT by NWS Goodland KS |
| Expires | 2026-05-17T17:00:00-06:00 |
| SenderName | NWS Goodland KS |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7d14f3e2c3aabbbd15b0da3a6748b6a43bf435db.001.1","noaa_urn:oid:2.49.0.1.840.0.b6689c53e3b6950ea0c6da17cd10498e8f6a14a4.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 67 |
| Iem Unit | MPH |
| Iem City | 1 E Limon |
| Iem County | Lincoln |
| Iem State | CO |
| Iem Wfo | BOU |
| Iem Remark | ASOS station KLIC Limon. |
| MergedSources | [{"id":"iem_G_39.270_-103.670_1779052740000","source":"iem","severity":"low","severityValue":25,"timestamp":1779052740000,"latitude":39.27,"longitude":-103.67}] |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.