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.
Nothing else has been detected within 20 km in the last 24 hours.
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. 12 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Watch issued March 16 at 12:12AM CDT until March 16 at 3:00AM CDT by NWS Nashville TN
An estimated 278,730 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 21, 2026 · score 43 · 0.0 km
- July 28, 2026 · score 43 · 0.0 km
- July 27, 2026 · score 43 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 55 out of 100, at 78 % 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 | 78% |
| Coordinates | 35.5000, -86.6000 |
| Nearest City | Shelbyville (13 km) |
| Population Exposed | 278.7K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-03-16T05:12:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Watch_noaa_urn:oid:2.49.0.1.840.0.bc041d099ea0e5e7fef4153f92805988 |
Score Breakdown
Technical Details
| Event | Tornado Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Cannon, TN; Clay, TN; Coffee, TN; Cumberland, TN; De Kalb, TN; Fentress, TN; Grundy, TN; Jackson, TN; Overton, TN; Pickett, TN; Putnam, TN; Van Buren, TN; Warren, TN; White, TN; Bledsoe, TN; Bradley, TN; Hamilton, TN; Marion, TN; Meigs, TN; Morgan, TN; Rhea, TN; Sequatchie, TN; McMinn, TN; Monroe, TN; Polk, TN |
| Headline | Tornado Watch issued March 16 at 12:12AM CDT until March 16 at 3:00AM CDT by NWS Nashville TN |
| Expires | 2026-03-16T03:00:00-05:00 |
| SenderName | NWS Nashville TN |
| HasExactCoords | false |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.bc041d099ea0e5e7fef4153f9280598811a6a201.002.1","noaa_urn:oid:2.49.0.1.840.0.6e2f204af2a1db0fa695c1df8809405c98e43fe3.002.1","noaa_urn:oid:2.49.0.1.840.0.6e2f204af2a1db0fa695c1df8809405c98e43fe3.001.1"] |
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.