Right now
The most recent data we hold from NOAA arrived 1 minute ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
5 other detections within 20 km in the last 24 hours, the nearest 7 km from here.
This alert expired on 30 July 2026 at 01:30 UTC. It is kept here as a record.
It is the 6th strongest of the 43 detections recorded within 20 km of this point since 11 April 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 29 at 6:55PM MDT until July 29 at 7:30PM MDT by NWS Salt Lake City UT
Urban PEI: 1,757,433 within a heuristic 50 km radius; not unique people.
Nearby, since 11 April 2026
- July 30, 2026 · score 52 · 2.7 km
- September 19, 2026 · score 58 · 8.0 km
- July 22, 2026 · score 52 · 10.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 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) | 52 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 40.6921, -112.0157 |
| Nearest City | West Valley City (1 km) |
| Urban exposure index (PEI) | 1.8M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-30T00:55:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.de35c58f027a7c452362c1825af50940b70cb63f.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: 2026-07-30T00:55:00.000Z.
First archived: 2026-07-30T01:12:28.754Z. 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 | Davis, UT; Morgan, UT; Salt Lake, UT; Summit, UT; Tooele, UT; Weber, UT |
| Headline | Severe Thunderstorm Warning issued July 29 at 6:55PM MDT until July 29 at 7:30PM MDT by NWS Salt Lake City UT |
| Expires | 2026-07-29T19:30:00-06:00 |
| SenderName | NWS Salt Lake City UT |
| HasExactCoords | true |
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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