Right now
The most recent data we hold from NOAA arrived 3 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 May 2026 at 00:30 UTC. It is kept here as a record.
No stronger detection stands among the 67 recorded within 20 km of this point since 5 April 2026 — 5 others scored the same. 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: Tornado Warning issued May 21 at 5:59PM MDT until May 21 at 6:30PM MDT by NWS Denver CO
Nearby, since 5 April 2026
- July 9, 2026 · score 22 · 11.7 km
How we know
Confirmed by 7 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 | 39.5854, -102.9768 |
| Nearest City | Parker (153 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-21T23:59:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.449f22ebf78b46514e95519570a1339a |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Washington, CO; Kit Carson, CO |
| Headline | Tornado Warning issued May 21 at 5:59PM MDT until May 21 at 6:30PM MDT by NWS Denver CO |
| Expires | 2026-05-21T18:30:00-06:00 |
| SenderName | NWS Denver CO |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.449f22ebf78b46514e95519570a1339a081c6cdf.001.1","noaa_urn:oid:2.49.0.1.840.0.5699dea44321c2cfae295db5395dc26b6496d109.001.1","noaa_urn:oid:2.49.0.1.840.0.2ca3034abf5389109c3c96865baf0cf145e4011e.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1.75 |
| Iem Unit | Inch |
| Iem City | 7 S Last Chance |
| Iem County | Washington |
| Iem State | CO |
| Iem Wfo | BOU |
| Iem Remark | Report from mPING: Golf Ball (1.75 in.). |
| MergedSources | [{"id":"iem_H_39.610_-103.240_1779407040000","source":"iem","severity":"low","severityValue":25,"timestamp":1779407040000,"latitude":39.61,"longitude":-103.24},{"id":"iem_T_39.610_-103.270_1779406500000","source":"iem","severity":"low","severityValue":25,"timestamp":1779406500000,"latitude":39.61,"longitude":-103.27},{"id":"iem_H_39.640_-103.410_1779405540000","source":"iem","severity":"low","severityValue":25,"timestamp":1779405540000,"latitude":39.64,"longitude":-103.41},{"id":"iem_H_39.670_-103.530_1779404760000","source":"iem","severity":"low","severityValue":25,"timestamp":1779404760000,"latitude":39.67,"longitude":-103.53},{"id":"iem_H_39.650_-103.590_1779403800000","source":"iem","severity":"low","severityValue":25,"timestamp":1779403800000,"latitude":39.65,"longitude":-103.59},{"id":"iem_H_39.620_-103.590_1779404280000","source":"iem","severity":"low","severityValue":25,"timestamp":1779404280000,"latitude":39.62,"longitude":-103.59}] |
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.
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