Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
One other detection within 20 km in the last 24 hours, 12 km from here.
This alert expired on 16 March 2026 at 08:00 UTC. It is kept here as a record.
No stronger detection stands among the 55 recorded within 20 km of this point since 16 March 2026 — 9 others scored the same. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Watch issued March 16 at 12:43AM EDT until March 16 at 4:00AM EDT by NWS Morristown TN
An estimated 278,730 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 28, 2026 · score 43 · 0.0 km
- July 27, 2026 · score 43 · 0.0 km
- July 22, 2026 · score 43 · 0.0 km
How we know
Confirmed by 6 independent sources, including NOAA.
Our own score for this event is 55 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 | High |
| Calamity Score (ours) | 55 / 100 |
| Our confidence | 88% |
| Coordinates | 35.5000, -86.6000 |
| Nearest City | Shelbyville (13 km) |
| Population Exposed | 278.7K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-03-16T04:43:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Watch_noaa_urn:oid:2.49.0.1.840.0.347d5f0122c57646d08ad9054714f101 |
Score Breakdown
Technical Details
| Event | Tornado Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Bledsoe, TN; Bradley, TN; Hamilton, TN; Marion, TN; Meigs, TN; Morgan, TN; Rhea, TN; Sequatchie, TN; Bedford, TN; Cannon, TN; Clay, TN; Coffee, TN; Cumberland, TN; De Kalb, TN; Fentress, TN; Giles, TN; Grundy, TN; Jackson, TN; Macon, TN; Marshall, TN; Overton, TN; Pickett, TN; Putnam, TN; Rutherford, TN; Smith, TN; Trousdale, TN; Van Buren, TN; Warren, TN; White, TN; Wilson, TN |
| Headline | Tornado Watch issued March 16 at 12:43AM EDT until March 16 at 4:00AM EDT by NWS Morristown TN |
| Expires | 2026-03-16T04:00:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.347d5f0122c57646d08ad9054714f101fff49602.002.1","noaa_urn:oid:2.49.0.1.840.0.074c47d0084ad1bff9247ff140c248544610316b.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
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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 55/100, near Shelbyville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.