This alert is in force until 3 September 2026, 23:00 UTC.
It is the 95th strongest of the 129 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued September 3 at 2:02PM EDT until September 3 at 7:00PM EDT by NWS Northern Indiana
Nearby, since 10 March 2026
- August 9, 2026 · score 22 · 0.0 km
- August 8, 2026 · score 22 · 0.0 km
- August 7, 2026 · score 22 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100, at 60 % 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) | 16 / 100 |
| Our confidence | 60% |
| Coordinates | 44.3000, -85.6000 |
| Nearest City | Traverse City (51 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-03T18:02:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.acc08a83cca667d0280cb01e0edb0bd7e4b91047.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Hillsdale, MI; Fulton, OH; St. Clair River; Detroit River; Lake St. Clair Open Lake (U.S. Portion); Michigan Waters of Lake Erie from Detroit River to North Cape MI; Port Sanilac to Port Huron MI; Lake Huron from Port Sanilac to Port Huron 5NM Off Shore to US/Canadian border; Bay, MI; Genesee, MI; Lapeer, MI; Lenawee, MI; Livingston, MI; Macomb, MI; Monroe, MI; Oakland, MI; Saginaw, MI; St. Clair, MI; Sanilac, MI; Shiawassee, MI; Tuscola, MI; Washtenaw, MI; Wayne, MI and 1 more areas |
| Headline | Severe Thunderstorm Watch issued September 3 at 2:02PM EDT until September 3 at 7:00PM EDT by NWS Northern Indiana |
| Expires | 2026-09-03T19:00:00-04:00 |
| SenderName | NWS Northern Indiana |
| HasExactCoords | false |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.acc08a83cca667d0280cb01e0edb0bd7e4b91047.001.1","noaa_urn:oid:2.49.0.1.840.0.32257dca819efff0ffebe087b97a302fcbe0fa18.002.1","noaa_urn:oid:2.49.0.1.840.0.32257dca819efff0ffebe087b97a302fcbe0fa18.001.1","noaa_urn:oid:2.49.0.1.840.0.81cfade4ae9d764f592063e0f5ea8c985b3257f1.001.1"] |
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 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 in this area?
Calamity.live data shows a weather event with CalamityScore 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.