This alert expired on 10 May 2026 at 00:15 UTC. It is kept here as a record.
It is the 7th strongest of the 63 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 9 at 7:40PM EDT until May 9 at 8:15PM EDT by NWS Cleveland OH
An estimated 281,185 people live within 50 km of this point.
Nearby, since 17 March 2026
- June 14, 2026 · score 43 · 2.8 km
- July 5, 2026 · score 43 · 12.0 km
- May 10, 2026 · score 43 · 15.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 79 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 79% |
| Coordinates | 41.2429, -80.7729 |
| Nearest City | Warren (4 km) |
| Population Exposed | 281.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-09T23:40:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.9cb40ee70bcd2a90592c7cea7d920498640b6acf.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Trumbull, OH |
| Headline | Severe Thunderstorm Warning issued May 9 at 7:40PM EDT until May 9 at 8:15PM EDT by NWS Cleveland OH |
| Expires | 2026-05-09T20:15:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
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 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.
Want to know when something happens near Warren?
Calamity.live data shows a weather event with CalamityScore 43/100, near Warren (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.