This alert expired on 11 June 2026 at 01:15 UTC. It is kept here as a record.
It is the 4th strongest of the 32 detections recorded within 20 km of this point since 16 March 2026. 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 10 at 8:40PM EDT until June 10 at 9:15PM EDT by NWS Detroit/Pontiac MI
An estimated 282,735 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 3, 2026 · score 67 · 18.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 out of 100, at 79 % 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) | 37 / 100 |
| Our confidence | 79% |
| Coordinates | 42.4744, -84.3877 |
| Nearest City | Holt (21 km) |
| Population Exposed | 282.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-11T00:40:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.a4a948621966793550f68cf41ea29664 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Bay, MI; Midland, MI; Saginaw, MI; Ingham, MI; Jackson, MI and 4 more areas |
| Headline | Severe Thunderstorm Warning issued June 10 at 8:40PM EDT until June 10 at 9:15PM EDT by NWS Detroit/Pontiac MI |
| Expires | 2026-06-10T21:15:00-04:00 |
| SenderName | NWS Detroit/Pontiac MI |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a4a948621966793550f68cf41ea2966410b5c336.001.1","noaa_urn:oid:2.49.0.1.840.0.924bcb17b2428a2e3186ba73e8922cfb4d608a2d.001.1","noaa_urn:oid:2.49.0.1.840.0.33ca1616ad66735f2fb624c54ee8550ad32858af.002.1","noaa_urn:oid:2.49.0.1.840.0.8872da4352aab6ff9cd18b6c86093b3c6d87abb9.001.1","noaa_urn:oid:2.49.0.1.840.0.1464ae561409e2ad2330383e12058d038f5c5f2d.001.1","noaa_urn:oid:2.49.0.1.840.0.5dd347ec859eebf410813677f8aba535f6230ccd.002.1","noaa_urn:oid:2.49.0.1.840.0.51ce6df037533c21e1c7c0eb42cae4a7089f3d39.001.1"] |
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 Holt?
Calamity.live data shows a weather event with CalamityScore 37/100, near Holt (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.