This alert expired on 25 June 2026 at 22:15 UTC. It is kept here as a record.
No stronger detection stands among the 14 recorded within 20 km of this point since 13 May 2026 — 2 others scored the same. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 25 at 3:40PM MDT until June 25 at 4:15PM MDT by NWS Salt Lake City UT
An estimated 1,695,996 people live within 50 km of this point.
Nearby, since 13 May 2026
- June 25, 2026 · score 52 · 7.7 km
- July 22, 2026 · score 48 · 20.2 km
- July 30, 2026 · score 46 · 21.2 km
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 87 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 87% |
| Coordinates | 40.6620, -111.5100 |
| Nearest City | East Millcreek (26 km) |
| Population Exposed | 1.7M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-25T21:40:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.73ef9877b6002a25da1e96209ade95f7a15f9e90.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Salt Lake, UT; Summit, UT; Wasatch, UT |
| Headline | Severe Thunderstorm Warning issued June 25 at 3:40PM MDT until June 25 at 4:15PM MDT by NWS Salt Lake City UT |
| Expires | 2026-06-25T16:15:00-06:00 |
| SenderName | NWS Salt Lake City UT |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 1.75 |
| Iem Unit | Inch |
| Iem City | 2 NW Taylorsville |
| Iem County | Salt Lake |
| Iem State | UT |
| Iem Wfo | SLC |
| Iem Remark | Public video of hail in Taylorsville with estimated max hail size up to golf ball. |
| MergedSources | [{"id":"iem_H_40.670_-111.820_1782421140000","source":"iem","severity":"low","severityValue":25,"timestamp":1782421140000,"latitude":40.67,"longitude":-111.82},{"id":"iem_H_40.670_-111.820_1782421080000","source":"iem","severity":"low","severityValue":25,"timestamp":1782421080000,"latitude":40.67,"longitude":-111.82},{"id":"iem_H_40.670_-111.960_1782419880000","source":"iem","severity":"low","severityValue":25,"timestamp":1782419880000,"latitude":40.67,"longitude":-111.96}] |
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 10 February 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 near East Millcreek?
Calamity.live data shows a weather event with CalamityScore 52/100, near East Millcreek (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 187 scientific monitoring sources.