Right now
The most recent data we hold from NOAA arrived 2 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 18 May 2026 at 19:30 UTC. It is kept here as a record.
It is the 12th strongest of the 76 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 18 at 1:58PM EDT until May 18 at 3:30PM EDT by NWS Grand Rapids MI
An estimated 81,244 people live within 50 km of this point.
Nearby, since 16 March 2026
- August 11, 2026 · score 22 · 9.8 km
- May 18, 2026 · score 34 · 15.1 km
- May 18, 2026 · score 43 · 17.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 79 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 39 / 100 |
| Our confidence | 79% |
| Coordinates | 41.2250, -86.0675 |
| Nearest City | Goshen (44 km) |
| Population Exposed | 81.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-18T17:58:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.9272f58bb21d2a0e23aceb3992ea78bc |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Allegan, MI; Barry, MI; Calhoun, MI; Kalamazoo, MI; Kent, MI; Ottawa, MI; Allegan, MI; Van Buren, MI; Elkhart, IN; Kosciusko, IN and 5 more areas |
| Headline | Severe Thunderstorm Warning issued May 18 at 1:58PM EDT until May 18 at 3:30PM EDT by NWS Grand Rapids MI |
| Expires | 2026-05-18T15:30:00-04:00 |
| SenderName | NWS Grand Rapids MI |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9272f58bb21d2a0e23aceb3992ea78bc47a83cfa.001.1","noaa_urn:oid:2.49.0.1.840.0.42adbdf9ccef5f0f2f1350e0c9c712c918cb1fce.001.1","noaa_urn:oid:2.49.0.1.840.0.1623e439651efb9082215ffc813857e2fc561b43.001.1","noaa_urn:oid:2.49.0.1.840.0.ab5dbfaf80fa9c55c99af84025ff8f76ddf22084.002.1","noaa_urn:oid:2.49.0.1.840.0.77a7368211ce85fa810a7f4b7e903c1da73b53f1.002.1","noaa_urn:oid:2.49.0.1.840.0.80a512db243834b30eff3fa51b0958a86159a500.001.1","noaa_urn:oid:2.49.0.1.840.0.35d6fe98da85ae2719264da4a03ea7b19f7cf392.001.1","noaa_urn:oid:2.49.0.1.840.0.f91a4ccb42b1d8625f696e91fe1978ee07de7b32.001.1"] |
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 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.