This alert expired on 11 August 2026 at 15:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 65 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 15 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 11 at 10:25AM EDT until August 11 at 11:15AM EDT by NWS Charleston WV
An estimated 1,281,278 people live within 50 km of this point.
Nearby, since 15 March 2026
- May 20, 2026 · score 52 · 11.6 km
- May 23, 2026 · score 52 · 12.2 km
- May 27, 2026 · score 52 · 15.6 km
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 91 % 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) | 52 / 100 |
| Our confidence | 91% |
| Coordinates | 39.9562, -82.5324 |
| Nearest City | Pataskala (13 km) |
| Population Exposed | 1.3M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-11T14:25:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.f83b97ede4c2beb50550f7c8d9a87580 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Perry, OH; Knox, OH; Delaware, OH; Franklin, OH; Pickaway, OH and 1 more areas |
| Headline | Severe Thunderstorm Warning issued August 11 at 10:25AM EDT until August 11 at 11:15AM EDT by NWS Charleston WV |
| Expires | 2026-08-11T11:15:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f83b97ede4c2beb50550f7c8d9a8758013d43644.001.1","noaa_urn:oid:2.49.0.1.840.0.4a45399920cd0b3977f9d39294b4fb8d6059b9a9.001.1","noaa_urn:oid:2.49.0.1.840.0.ba408176ce0ac55db85cb7915670fdaa37e7f9fd.001.1","noaa_urn:oid:2.49.0.1.840.0.0d908e5a30454cdfacee815eb53efd5daec8b862.001.1"] |
| Iem TypeSummary | F |
| Iem City | 2 SSE Downtown Columbus |
| Iem County | Franklin |
| Iem State | OH |
| Iem Wfo | ILN |
| Iem Remark | Multiple vehicles stranded in one to two feet of water on Parsons Avenue south of Stewart Avenue. |
| Google News RssFeed | weather |
| Google News SourceName | nbc4i.com |
| MergedSources | [{"id":"iem_F_39.930_-82.980_1786440000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786440000000,"latitude":39.93,"longitude":-82.98},{"id":"gnews_weather_496238_216","source":"google_news","severity":"medium","severityValue":40,"timestamp":1786456920000,"latitude":39.96,"longitude":-83},{"id":"gnews_weather_496234_225","source":"google_news","severity":"medium","severityValue":40,"timestamp":1786444426000,"latitude":39.96,"longitude":-83}] |
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 Pataskala?
Calamity.live data shows a weather event with CalamityScore 52/100, near Pataskala (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.