This alert expired on 11 June 2026 at 01:15 UTC. It is kept here as a record.
It is the 9th strongest of the 81 detections recorded within 20 km of this point since 8 March 2026. The last comparable one was on 10 June 2026. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 10 at 8:12PM EDT until June 10 at 9:15PM EDT by NWS Detroit/Pontiac MI
An estimated 249,602 people live within 50 km of this point.
Nearby, since 8 March 2026
- June 11, 2026 · score 37 · 0.4 km
- March 8, 2026 · score 22 · 7.0 km
- June 10, 2026 · score 37 · 15.6 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 | 42.7364, -84.4217 |
| Nearest City | Okemos (2 km) |
| Population Exposed | 249.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-11T00:12:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.9a780fe96bd8279a867e5749359e0dad |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Shiawassee, MI; Steuben, IN; Hillsdale, MI; Williams, OH; Midland, MI; Saginaw, MI and 1 more areas |
| Headline | Severe Thunderstorm Warning issued June 10 at 8:12PM 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 | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9a780fe96bd8279a867e5749359e0dad9a9bc8e9.001.1","noaa_urn:oid:2.49.0.1.840.0.7521e67ace7386537e124bd79761215675e4dcc6.001.1","noaa_urn:oid:2.49.0.1.840.0.5fd8e4c5f88d01ab91ec4cc1c9dd772af380f064.001.1","noaa_urn:oid:2.49.0.1.840.0.d5c3cd69f298b7bfff388d6617be2ac8985bcce7.001.1"] |
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 Okemos?
Calamity.live data shows a weather event with CalamityScore 37/100, near Okemos (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.