This alert expired on 12 June 2026 at 02:30 UTC. It is kept here as a record.
No stronger detection stands among the 36 recorded within 20 km of this point since 17 March 2026 — one other scored the same. The last comparable one was on 18 May 2026.
What the source measured
NOAA reported: Tornado Warning issued June 11 at 9:54PM EDT until June 11 at 10:30PM EDT by NWS Grand Rapids MI
An estimated 265,573 people live within 50 km of this point.
Nearby, since 17 March 2026
- August 11, 2026 · score 67 · 8.0 km
- July 27, 2026 · score 43 · 15.6 km
- July 4, 2026 · score 43 · 19.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 67 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | critical |
| Calamity Score (ours) | 67 / 100 |
| Our confidence | 80% |
| Coordinates | 41.5335, -86.0367 |
| Nearest City | Elkhart (17 km) |
| Population Exposed | 265.6K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-06-12T01:54:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.6fe4e7200af99c657f99c8c9773bc09e |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clinton, MI; Eaton, MI; Ionia, MI; St. Joseph, IN; Berrien, MI; Barry, MI; Ionia, MI and 3 more areas |
| Headline | Tornado Warning issued June 11 at 9:54PM EDT until June 11 at 10:30PM EDT by NWS Grand Rapids MI |
| Expires | 2026-06-11T22:30:00-04:00 |
| SenderName | NWS Grand Rapids MI |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6fe4e7200af99c657f99c8c9773bc09e3084cda1.001.1","noaa_urn:oid:2.49.0.1.840.0.9a92be65bbe268801ed9787d917549c833142aac.002.1","noaa_urn:oid:2.49.0.1.840.0.2c527fdab46a25ebadcdf174f73384a2e36f8b94.002.1","noaa_urn:oid:2.49.0.1.840.0.27f29eb35a67bbe5f16c97785617cb80f9d7e380.001.1","noaa_urn:oid:2.49.0.1.840.0.5fcf7b59df6624c39bb9d3325fc0bd51e99b1836.001.1","noaa_urn:oid:2.49.0.1.840.0.2ad921db081238a1312306c538a9f8c9efc76b4d.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 67/100, near Elkhart (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.