This alert expired on 10 August 2026 at 09:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 63 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 2 August 2026. 18 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 10 at 4:14AM EDT until August 10 at 5:15AM EDT by NWS Indianapolis IN
An estimated 362,665 people live within 50 km of this point.
Nearby, since 15 March 2026
- July 27, 2026 · score 43 · 6.7 km
- August 12, 2026 · score 43 · 8.7 km
- August 12, 2026 · score 43 · 13.5 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 | 40.1900, -86.6390 |
| Nearest City | Frankfort (15 km) |
| Population Exposed | 362.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-10T08:14:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.0c2c3d71a2633f9c9debac641d6b8207b395fe28.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Boone, IN; Clinton, IN; Montgomery, IN; Tippecanoe, IN |
| Headline | Severe Thunderstorm Warning issued August 10 at 4:14AM EDT until August 10 at 5:15AM EDT by NWS Indianapolis IN |
| Expires | 2026-08-10T05:15:00-04:00 |
| SenderName | NWS Indianapolis IN |
| 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.
Calamity.live data shows a weather event with CalamityScore 43/100, near Frankfort (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.