Right now
The most recent data we hold from NOAA arrived 7 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 26 June 2026 at 01:30 UTC. It is kept here as a record.
No stronger detection stands among the 46 recorded within 20 km of this point since 15 March 2026 — 19 others scored the same. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 25 at 7:00PM MDT until June 25 at 7:30PM MDT by NWS Denver CO
Urban PEI: 151,929 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- June 3, 2026 · score 16 · 11.8 km
- June 26, 2026 · score 43 · 12.7 km
- July 2, 2026 · score 43 · 18.5 km
How we know
4 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 43 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) | 43 / 100 |
| Legacy data-support index | 0.88/1 |
| Coordinates | 40.6760, -104.3700 |
| Nearest City | Greeley (40 km) |
| Urban exposure index (PEI) | 151.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-26T01:00:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.7758d918c60c5a035d61fee6893c83f1144a2df1.001.1 |
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: 2026-06-26T01:00:00.000Z.
First archived: 2026-06-26T01:20:04.158Z. 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 | Weld, CO |
| Headline | Severe Thunderstorm Warning issued June 25 at 7:00PM MDT until June 25 at 7:30PM MDT by NWS Denver CO |
| Expires | 2026-06-25T19:30:00-06:00 |
| SenderName | NWS Denver CO |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 62 |
| Iem Unit | MPH |
| Iem City | 1 NW Cheyenne |
| Iem County | Laramie |
| Iem State | WY |
| Iem Wfo | CYS |
| Iem Remark | ASOS station KCYS Cheyenne Airport - Cys. |
| MergedSources | [{"id":"iem_G_41.000_-104.770_1782432540000","source":"iem","severity":"low","severityValue":25,"timestamp":1782432540000,"latitude":41,"longitude":-104.77},{"id":"iem_G_41.050_-104.890_1782432180000","source":"iem","severity":"low","severityValue":25,"timestamp":1782432180000,"latitude":41.05,"longitude":-104.89},{"id":"iem_G_41.150_-104.800_1782432780000","source":"iem","severity":"low","severityValue":25,"timestamp":1782432780000,"latitude":41.15,"longitude":-104.8}] |
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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