Right now
The most recent data we hold from NOAA arrived 89 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 11 June 2026 at 04:00 UTC. It is kept here as a record.
It is the 97th strongest of the 130 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued June 10 at 7:45PM EDT until June 11 at 12:00AM 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 16 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v1. 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 |
| Legacy data-support index | 0.59/1 |
| Coordinates | 44.3000, -85.6000 |
| Nearest City | Traverse City (51 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-10T23:45:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.a43b7081757062f045c72c9379e4e493 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-06-10T23:45:00.000Z.
First archived: 2026-06-11T00:06:07.494Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm 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; Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay; Inner Saginaw Bay SW of Point Au Gres to Bay Port MI; Port Austin to Harbor Beach MI; Harbor Beach to Port Sanilac MI; Port Sanilac to Port Huron MI; Lake Huron from Port Austin to Harbor Beach 5NM Off Shore to the US/Canadian border; Lake Huron from Harbor Beach to Port Sanilac 5NM Off Shore to US/Canadian border; Lake Huron from Port Sanilac to Port Huron 5NM Off Shore to US/Canadian border; Bay, MI; Genesee, MI; Huron, MI; Lapeer, MI; Lenawee, MI; Livingston, MI; Macomb, MI; Midland, MI; Monroe, MI; Oakland, MI; Saginaw, MI; St. Clair, MI; Sanilac, MI; Shiawassee, MI; Tuscola, MI; Washtenaw, MI; Wayne, MI; Manistee, MI; Missaukee, MI; Roscommon, MI; Wexford, MI and 4 more areas |
| Headline | Severe Thunderstorm Watch issued June 10 at 7:45PM EDT until June 11 at 12:00AM EDT by NWS Detroit/Pontiac MI |
| Expires | 2026-06-11T00:00:00-04:00 |
| SenderName | NWS Detroit/Pontiac MI |
| HasExactCoords | false |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a43b7081757062f045c72c9379e4e493616d3080.002.1","noaa_urn:oid:2.49.0.1.840.0.a43b7081757062f045c72c9379e4e493616d3080.001.1","noaa_urn:oid:2.49.0.1.840.0.445baa4b3acb750aeb7fc599f134af1a1b5d51ec.003.1","noaa_urn:oid:2.49.0.1.840.0.445baa4b3acb750aeb7fc599f134af1a1b5d51ec.002.1","noaa_urn:oid:2.49.0.1.840.0.445baa4b3acb750aeb7fc599f134af1a1b5d51ec.001.1","noaa_urn:oid:2.49.0.1.840.0.05d33f71bdfa1442f313ccf696e3c0b1996c1d15.001.1","noaa_urn:oid:2.49.0.1.840.0.05d33f71bdfa1442f313ccf696e3c0b1996c1d15.002.1"] |
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.
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