Right now
The most recent data we hold from NOAA arrived 3 minutes ago, and this point is in it.
One other detection within 20 km in the last 24 hours, 9 km from here.
This alert is in force until 9 September 2026, 22:45 UTC.
It is the 205th strongest of the 254 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 4 September 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 9 at 6:00PM EDT until September 9 at 6:45PM EDT by NWS Cleveland OH
An estimated 632,342 people live within 50 km of this point.
Nearby, since 17 March 2026
- August 10, 2026 · score 48 · 3.9 km
- September 3, 2026 · score 54 · 4.0 km
- August 9, 2026 · score 48 · 5.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 41 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 41 / 100 |
| Our confidence | 80% |
| Coordinates | 40.8600, -81.2269 |
| Nearest City | Alliance (12 km) |
| Population Exposed | 632.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-09T22:00:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.7770f07fd1a7674c125f909cccde6fd4a0bd055c.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Mahoning, OH; Stark, OH |
| Headline | Severe Thunderstorm Warning issued September 9 at 6:00PM EDT until September 9 at 6:45PM EDT by NWS Cleveland OH |
| Expires | 2026-09-09T18:45:00-04:00 |
| 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 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.
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