This alert expired on 12 August 2026 at 19:30 UTC. It is kept here as a record.
It is the 14th strongest of the 56 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 25 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 12 at 3:18PM EDT until August 12 at 3:30PM EDT by NWS Wilmington OH
An estimated 181,047 people live within 50 km of this point.
Nearby, since 12 March 2026
- May 24, 2026 · score 43 · 5.6 km
- May 26, 2026 · score 48 · 11.2 km
- June 22, 2026 · score 34 · 15.2 km
How we know
Confirmed by 7 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 90 % 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 | 90% |
| Coordinates | 39.3900, -85.0120 |
| Nearest City | Oxford (26 km) |
| Population Exposed | 181.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-12T19:18:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.a293ddac390f97f3c3b160ae3b806afb95d2d719.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Dearborn, IN; Franklin, IN; Ripley, IN |
| Headline | Severe Thunderstorm Warning issued August 12 at 3:18PM EDT until August 12 at 3:30PM EDT by NWS Wilmington OH |
| Expires | 2026-08-12T15:30:00-04:00 |
| SenderName | NWS Wilmington OH |
| HasExactCoords | true |
| Iem TypeSummary | E |
| Iem City | 4 SSE Laurel |
| Iem County | Franklin |
| Iem State | IN |
| Iem Wfo | ILN |
| Iem Remark | Video shows rapidly moving water on Whitewater along Whitewater Canal Trail near Metamora. |
| MergedSources | [{"id":"iem_F_39.640_-85.170_1786546800000","source":"iem","severity":"low","severityValue":25,"timestamp":1786546800000,"latitude":39.64,"longitude":-85.17},{"id":"iem_R_39.420_-85.330_1786543800000","source":"iem","severity":"low","severityValue":25,"timestamp":1786543800000,"latitude":39.42,"longitude":-85.33},{"id":"iem_E_39.620_-85.140_1786545000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786545000000,"latitude":39.62,"longitude":-85.14},{"id":"iem_F_39.850_-84.900_1786552200000","source":"iem","severity":"low","severityValue":25,"timestamp":1786552200000,"latitude":39.85,"longitude":-84.9},{"id":"iem_F_39.670_-85.010_1786552200000","source":"iem","severity":"low","severityValue":25,"timestamp":1786552200000,"latitude":39.67,"longitude":-85.01},{"id":"iem_E_39.450_-85.150_1786551660000","source":"iem","severity":"low","severityValue":25,"timestamp":1786551660000,"latitude":39.45,"longitude":-85.15}] |
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 43/100, near Oxford (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.