This alert expired on 16 March 2026 at 05:00 UTC. It is kept here as a record.
It is the 12th strongest of the 51 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 16 at 12:51AM EDT until March 16 at 1:00AM EDT by NWS Louisville KY
An estimated 397,976 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 28, 2026 · score 43 · 6.8 km
- July 27, 2026 · score 43 · 6.8 km
- July 22, 2026 · score 43 · 6.8 km
How we know
Confirmed by 7 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 88 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 88% |
| Coordinates | 35.5597, -86.6142 |
| Nearest City | Shelbyville (17 km) |
| Population Exposed | 398.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-16T04:51:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.4672818837ac04759cc0e589eb2ebb87 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Anderson, KY; Franklin, KY; Mercer, KY; Scott, KY; Washington, KY; Woodford, KY; Henry, KY; Switzerland, IN; Carroll, KY; Gallatin, KY; Grant, KY; Owen, KY and 12 more areas |
| Headline | Severe Thunderstorm Warning issued March 16 at 12:51AM EDT until March 16 at 1:00AM EDT by NWS Louisville KY |
| Expires | 2026-03-16T01:00:00-04:00 |
| SenderName | NWS Louisville KY |
| HasExactCoords | true |
| MergedCount | 16 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4672818837ac04759cc0e589eb2ebb87956970cd.002.1","noaa_urn:oid:2.49.0.1.840.0.c428ba956e51b555df09f914abf66bf058775a68.002.1","noaa_urn:oid:2.49.0.1.840.0.b0470d36d7ff7e78903499405c76edeb492c3dd7.001.1","noaa_urn:oid:2.49.0.1.840.0.bd319c5b299843cbf42791beeb390c3469e35f9d.002.1","noaa_urn:oid:2.49.0.1.840.0.d1e57898bf1ab4352f1050a7d184be21126c0287.001.1","noaa_urn:oid:2.49.0.1.840.0.8b0b7874bf0d9ceb6e16197ce0f36005c38936df.002.1","noaa_urn:oid:2.49.0.1.840.0.458cd0622e786ba82e0f4766ccec0edd555cb74f.001.1","noaa_urn:oid:2.49.0.1.840.0.3755609c73f3802fee3116f701fd30bfe9c961da.001.1","noaa_urn:oid:2.49.0.1.840.0.738c32db5c5bf8171c6bb6dd3160d6cdd329a5a6.001.1","noaa_urn:oid:2.49.0.1.840.0.c0a645596c2fe0b884830755312242caf6d46e18.001.1","noaa_urn:oid:2.49.0.1.840.0.dc1672e8ef3ef5f1a7ff91f1215ca039b0b3b90c.001.1","noaa_urn:oid:2.49.0.1.840.0.0156a24ec17ce8379ca119a9e165b75110e50c44.001.1","noaa_urn:oid:2.49.0.1.840.0.00acc95f739207d2916ab8bb77b660a04a3e3c35.002.1","noaa_urn:oid:2.49.0.1.840.0.bd0e2df6aa9a9798aac41932abf0d7b1053f31c7.001.1","noaa_urn:oid:2.49.0.1.840.0.ce3dedb6669c6c214b684ed948984f72f2ae8063.001.1","noaa_urn:oid:2.49.0.1.840.0.20cab27eacb053479d934d77468628f666dd5f71.002.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 5 NE Columbia |
| Spc County | Maury |
| Spc State | TN |
| Spc Comments | Tree reported down on Double Branch Road near Columbia. (OHX) |
| Iem TypeSummary | D |
| Iem City | Columbia |
| Iem County | Maury |
| Iem State | TN |
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 8 March 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 Shelbyville?
Calamity.live data shows a weather event with CalamityScore 43/100, near Shelbyville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.