Right now
The most recent data we hold from NOAA arrived 1 minute 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 10 June 2026 at 23:00 UTC. It is kept here as a record.
No stronger detection stands among the 23 recorded within 20 km of this point since 3 April 2026 — one other scored the same. The last comparable one was on 18 May 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 10 at 6:44PM EDT until June 10 at 7:00PM EDT by NWS Grand Rapids MI
Urban PEI: 404,734 within a heuristic 50 km radius; not unique people.
Nearby, since 3 April 2026
- June 10, 2026 · score 37 · 0.1 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.
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) | 37 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 43.1644, -85.2880 |
| Nearest City | Forest Hills (28 km) |
| Urban exposure index (PEI) | 404.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-10T22:44:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.4b5b658fa0057f841b607ebca3027041 |
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: 2026-06-10T22:44:00.000Z.
First archived: 2026-06-10T22:46:57.528Z. 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 Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Allegan, MI; Ottawa, MI; Van Buren, MI; Lake, MI; Newaygo, MI; Barry, MI; Kalamazoo, MI; Kent, MI and 2 more areas |
| Headline | Severe Thunderstorm Warning issued June 10 at 6:44PM EDT until June 10 at 7:00PM EDT by NWS Grand Rapids MI |
| Expires | 2026-06-10T19:00:00-04:00 |
| SenderName | NWS Grand Rapids MI |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4b5b658fa0057f841b607ebca30270419f273676.001.1","noaa_urn:oid:2.49.0.1.840.0.85dad0e5189b3fb18bbb3c75b2c1a38f35b2e08a.001.1","noaa_urn:oid:2.49.0.1.840.0.9c94b274c352971462ee9946ec5aa60b79807dea.001.1","noaa_urn:oid:2.49.0.1.840.0.8bfc0b7d02f2368222f49efbdf0cc3ebed995aab.001.1","noaa_urn:oid:2.49.0.1.840.0.8cdb2c6b2edcaef4f3c26a5cf96e5b9a66fb49c9.001.1"] |
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.
Review the area, threshold and delivery channel in your account.
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