This alert expired on 12 June 2026 at 07:00 UTC. It is kept here as a record.
No stronger detection stands among the 126 recorded within 20 km of this point since 10 March 2026 — 13 others scored the same. Another comparable one was recorded here earlier the same day. 14 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Watch issued June 12 at 1:47AM EDT until June 12 at 2:00AM EDT by NWS Detroit/Pontiac MI
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 34 out of 100, at 61 % 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) | 34 / 100 |
| Our confidence | 61% |
| Coordinates | 44.3000, -85.6000 |
| Nearest City | Traverse City (51 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-12T05:47:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Watch_noaa_urn:oid:2.49.0.1.840.0.b7fbd3e42405e069a7e1e9d7a79a03e0 |
Score Breakdown
Technical Details
| Event | Tornado Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | 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; Genesee, MI; Lapeer, MI; Lenawee, MI; Livingston, MI; Macomb, MI; Monroe, MI; Oakland, MI; St. Clair, MI; Shiawassee, MI; Washtenaw, MI; Wayne, MI |
| Headline | Tornado Watch issued June 12 at 1:47AM EDT until June 12 at 2:00AM EDT by NWS Detroit/Pontiac MI |
| Expires | 2026-06-12T03:00:00-04:00 |
| SenderName | NWS Detroit/Pontiac MI |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b7fbd3e42405e069a7e1e9d7a79a03e0261a855c.002.1","noaa_urn:oid:2.49.0.1.840.0.b7fbd3e42405e069a7e1e9d7a79a03e0261a855c.001.1"] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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.
Calamity.live data shows a weather event with CalamityScore 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.