This alert expired on 19 May 2026 at 21:45 UTC. It is kept here as a record.
It is the 4th strongest of the 33 detections recorded within 20 km of this point since 26 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 19 at 5:24PM EDT until May 19 at 5:45PM EDT by NWS Detroit/Pontiac MI
An estimated 395,197 people live within 50 km of this point.
Nearby, since 26 March 2026
- May 19, 2026 · score 43 · 6.9 km
- June 12, 2026 · score 37 · 19.1 km
- August 10, 2026 · score 67 · 20.0 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 85 % 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) | 43 / 100 |
| Our confidence | 85% |
| Coordinates | 41.3958, -84.0150 |
| Nearest City | Bowling Green (31 km) |
| Population Exposed | 395.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-19T21:24:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.fcd6c3fcebbceb52123b83e070a7e913 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Monroe, MI; Wayne, MI; Fulton, OH; Henry, OH; Defiance, OH; Henry, OH and 1 more areas |
| Headline | Severe Thunderstorm Warning issued May 19 at 5:24PM EDT until May 19 at 5:45PM EDT by NWS Detroit/Pontiac MI |
| Expires | 2026-05-19T17:45:00-04:00 |
| SenderName | NWS Detroit/Pontiac MI |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.fcd6c3fcebbceb52123b83e070a7e91350e5821b.001.1","noaa_urn:oid:2.49.0.1.840.0.d7755099893ee350521d199179c007e2a20bd4dd.001.1","noaa_urn:oid:2.49.0.1.840.0.b133c03c18e391dd5017c3bf951d7f583d8a1517.002.1","noaa_urn:oid:2.49.0.1.840.0.188e0575e1bec01e023b6b1984e5fdfb15f9079e.002.1"] |
| Iem TypeSummary | D |
| Iem City | 1 W Melrose |
| Iem County | Paulding |
| Iem State | OH |
| Iem Wfo | IWX |
| Iem Remark | Tree downed on State Route 613. |
| MergedSources | [{"id":"iem_D_41.090_-84.440_1779224220000","source":"iem","severity":"low","severityValue":25,"timestamp":1779224220000,"latitude":41.09,"longitude":-84.44}] |
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 43/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.