This alert expired on 3 September 2026 at 13:30 UTC. It is kept here as a record.
It is the 12th strongest of the 31 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 2 September 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 3 at 8:32AM EDT until September 3 at 9:30AM EDT by NWS Grand Rapids MI
An estimated 281,971 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 3, 2026 · score 43 · 6.7 km
- July 3, 2026 · score 43 · 9.5 km
- September 3, 2026 · score 37 · 11.8 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 81 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 37 / 100 |
| Our confidence | 81% |
| Coordinates | 42.5083, -84.9583 |
| Nearest City | Battle Creek (28 km) |
| Population Exposed | 282.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-03T12:32:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.3cf5a745a3c779b5350335b5f41dd09ee923b5b4.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Barry, MI; Eaton, MI |
| Headline | Severe Thunderstorm Warning issued September 3 at 8:32AM EDT until September 3 at 9:30AM EDT by NWS Grand Rapids MI |
| Expires | 2026-09-03T09:30:00-04:00 |
| SenderName | NWS Grand Rapids MI |
| 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.
Want to know when something happens near Battle Creek?
Calamity.live data shows a weather event with CalamityScore 37/100, near Battle Creek (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.