This alert expired on 4 July 2026 at 02:22 UTC. It is kept here as a record.
No stronger detection stands among the 66 recorded within 20 km of this point since 15 March 2026 — 14 others scored the same. Another comparable one was recorded here earlier the same day. 34 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued July 3 at 8:12PM MDT until July 3 at 8:15PM MDT by NWS Denver CO
Nearby, since 15 March 2026
- June 25, 2026 · score 46 · 8.3 km
- May 21, 2026 · score 46 · 19.3 km
- May 31, 2026 · score 28 · 22.9 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 46 out of 100, at 66 % 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 | 66% |
| Coordinates | 40.3380, -103.3960 |
| Nearest City | Evans (110 km) |
| Impact Tier | minor |
| Timestamp | 2026-07-04T02:12:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.64d6f4b0ef079239168b8a395ecd6c58b860fb13.001.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Washington, CO |
| Headline | Tornado Warning issued July 3 at 8:12PM MDT until July 3 at 8:15PM MDT by NWS Denver CO |
| Expires | 2026-07-03T20:22:00-06:00 |
| SenderName | NWS Denver CO |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 1.25 |
| Iem Unit | Inch |
| Iem City | 3 NW Buckingham |
| Iem County | Weld |
| Iem State | CO |
| Iem Wfo | BOU |
| MergedSources | [{"id":"iem_H_40.640_-104.020_1783124400000","source":"iem","severity":"low","severityValue":25,"timestamp":1783124400000,"latitude":40.64,"longitude":-104.02}] |
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.