This alert expired on 10 August 2026 at 16:30 UTC. It is kept here as a record.
It is the 4th strongest of the 105 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 10 at 11:53AM EDT until August 10 at 12:30PM EDT by NWS Pittsburgh PA
An estimated 113,250 people live within 50 km of this point.
Nearby, since 12 March 2026
- March 12, 2026 · score 43 · 7.1 km
- May 27, 2026 · score 43 · 11.8 km
- May 20, 2026 · score 43 · 14.2 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 82 % 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 | 82% |
| Coordinates | 39.8310, -82.1253 |
| Nearest City | Zanesville (16 km) |
| Population Exposed | 113.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-10T15:53:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Guernsey, OH; Muskingum, OH; Noble, OH; Morgan, OH; Perry, OH |
| Headline | Severe Thunderstorm Warning issued August 10 at 11:53AM EDT until August 10 at 12:30PM EDT by NWS Pittsburgh PA |
| Expires | 2026-08-10T12:30:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6defdcdfcd2341eb3706d9f4aa4c5657f200e1f0.001.1","noaa_urn:oid:2.49.0.1.840.0.186b6c449c0fea5b6dd1d3cb260b7912f451f77c.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 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 43/100, near Zanesville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.