This alert expired on 12 August 2026 at 19:15 UTC. It is kept here as a record.
No stronger detection stands among the 52 recorded within 20 km of this point since 15 March 2026 — 12 others scored the same. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 12 at 3:07PM EDT until August 12 at 3:15PM EDT by NWS Indianapolis IN
An estimated 249,552 people live within 50 km of this point.
Nearby, since 15 March 2026
- May 16, 2026 · score 43 · 5.1 km
- August 1, 2026 · score 43 · 11.1 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 85 % 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 | 85% |
| Coordinates | 39.1973, -86.0613 |
| Nearest City | Columbus (12 km) |
| Population Exposed | 249.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-12T19:07:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.047efe8c0c413debde5edc5b66f7ba7f |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Daviess, IN; Greene, IN; Knox, IN; Sullivan, IN; Decatur, IN; Rush, IN; Dearborn, IN; Franklin, IN; Ripley, IN and 1 more areas |
| Headline | Severe Thunderstorm Warning issued August 12 at 3:07PM EDT until August 12 at 3:15PM EDT by NWS Indianapolis IN |
| Expires | 2026-08-12T15:15:00-04:00 |
| SenderName | NWS Indianapolis IN |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.047efe8c0c413debde5edc5b66f7ba7f353a378d.001.1","noaa_urn:oid:2.49.0.1.840.0.b630529f8886fed203aa94b1b8ca924b0896de3a.001.1","noaa_urn:oid:2.49.0.1.840.0.25ff2b387154a27ff11665a65695ab3d77092d8f.001.1","noaa_urn:oid:2.49.0.1.840.0.25ff2b387154a27ff11665a65695ab3d77092d8f.001.1","noaa_urn:oid:2.49.0.1.840.0.1767246b0af549c72de10cfa45b0ea0e15385bac.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 0.5 |
| Iem Unit | Inch |
| Iem City | 2 W Newbern |
| Iem County | Bartholomew |
| Iem State | IN |
| Iem Wfo | IND |
| Iem Remark | Report from mPING: Half-inch (0.50 in.). |
| MergedSources | [{"id":"iem_H_39.220_-85.790_1786542060000","source":"iem","severity":"low","severityValue":25,"timestamp":1786542060000,"latitude":39.22,"longitude":-85.79}] |
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 Columbus (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.