Right now
The most recent data we hold from NOAA arrived 69 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 25 June 2026 at 03:15 UTC. It is kept here as a record.
No stronger detection stands among the 51 recorded within 20 km of this point since 15 March 2026 — 19 others scored the same. The last comparable one was on 1 June 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 24 at 8:37PM MDT until June 24 at 9:15PM MDT by NWS Cheyenne WY
Urban PEI: 322,853 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- June 25, 2026 · score 43 · 14.9 km
- June 26, 2026 · score 43 · 19.3 km
How we know
6 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 | 0.89/1 |
| Coordinates | 40.6671, -104.5623 |
| Nearest City | Greeley (30 km) |
| Urban exposure index (PEI) | 322.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-25T02:37:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.e6eeadca21dac95f7446b5fb703e7e27 |
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: 2026-06-25T02:37:00.000Z.
First archived: 2026-06-25T02:40:12.837Z. 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 | Laramie, WY; Morgan, CO; Morgan, CO; Weld, CO and 2 more areas |
| Headline | Severe Thunderstorm Warning issued June 24 at 8:37PM MDT until June 24 at 9:15PM MDT by NWS Cheyenne WY |
| Expires | 2026-06-24T21:15:00-06:00 |
| SenderName | NWS Cheyenne WY |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.e6eeadca21dac95f7446b5fb703e7e273640f37b.001.1","noaa_urn:oid:2.49.0.1.840.0.5f4aab8bdd330dcaa32aaad488e4431ce02f9384.001.1","noaa_urn:oid:2.49.0.1.840.0.6579cb61e17499cf36da6dc930405961fd794a84.001.1","noaa_urn:oid:2.49.0.1.840.0.4e0023b5e7673c8f4a8d3f23cc1006e73ed8642a.001.1","noaa_urn:oid:2.49.0.1.840.0.81796760b1ca73d1fb79ad6758ab09aec887adba.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1.5 |
| Iem Unit | Inch |
| Iem City | 1 NNW Berthoud |
| Iem County | Larimer |
| Iem State | CO |
| Iem Wfo | BOU |
| MergedSources | [{"id":"iem_H_40.370_-103.800_1782354360000","source":"iem","severity":"low","severityValue":25,"timestamp":1782354360000,"latitude":40.37,"longitude":-103.8},{"id":"iem_H_41.170_-104.520_1782354120000","source":"iem","severity":"low","severityValue":25,"timestamp":1782354120000,"latitude":41.17,"longitude":-104.52},{"id":"iem_H_40.300_-105.070_1782352320000","source":"iem","severity":"low","severityValue":25,"timestamp":1782352320000,"latitude":40.3,"longitude":-105.07},{"id":"iem_H_40.310_-105.100_1782352020000","source":"iem","severity":"low","severityValue":25,"timestamp":1782352020000,"latitude":40.31,"longitude":-105.1},{"id":"iem_H_40.320_-105.090_1782352020000","source":"iem","severity":"low","severityValue":25,"timestamp":1782352020000,"latitude":40.32,"longitude":-105.09}] |
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.
Review the area, threshold and delivery channel in your account.
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