This alert expired on 7 August 2026 at 22:45 UTC. It is kept here as a record.
It is the 10th strongest of the 67 detections recorded within 20 km of this point since 28 April 2026. Another comparable one was recorded here earlier the same day. 19 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 7 at 6:18PM EDT until August 7 at 6:45PM EDT by NWS Wilmington OH
An estimated 685,686 people live within 50 km of this point.
Nearby, since 28 April 2026
- May 19, 2026 · score 48 · 9.5 km
- August 1, 2026 · score 72 · 10.0 km
- July 18, 2026 · score 43 · 10.6 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 48 out of 100, at 89 % 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) | 48 / 100 |
| Our confidence | 89% |
| Coordinates | 39.4545, -84.8240 |
| Nearest City | Oxford (9 km) |
| Population Exposed | 685.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-07T22:18:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.98c023fc338c6efe86278cd9bc2c3656 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Butler, OH; Franklin, IN |
| Headline | Severe Thunderstorm Warning issued August 7 at 6:18PM EDT until August 7 at 6:45PM EDT by NWS Wilmington OH |
| Expires | 2026-08-07T18:45:00-04:00 |
| SenderName | NWS Wilmington OH |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.98c023fc338c6efe86278cd9bc2c365692f93014.002.1","noaa_urn:oid:2.49.0.1.840.0.8a201d67bd8460a0a4726a4f71a4c12f379703ad.001.1"] |
| Iem TypeSummary | F |
| Iem City | 1 N Brookville |
| Iem County | Franklin |
| Iem State | IN |
| Iem Wfo | ILN |
| Iem Remark | A culvert was washed out near the intersection of Reservoir Road and Lakeside Terrace. |
| MergedSources | [{"id":"iem_D_39.580_-85.580_1786135080000","source":"iem","severity":"low","severityValue":25,"timestamp":1786135080000,"latitude":39.58,"longitude":-85.58},{"id":"iem_F_39.430_-85.010_1786129200000","source":"iem","severity":"low","severityValue":25,"timestamp":1786129200000,"latitude":39.43,"longitude":-85.01}] |
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 Oxford?
Calamity.live data shows a weather event with CalamityScore 48/100, near Oxford (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.