Right now
The most recent data we hold from NOAA arrived 20 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 04:45 UTC. It is kept here as a record.
No stronger detection stands among the 156 recorded within 20 km of this point since 12 March 2026 — one other scored the same. The last comparable one was on 12 March 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued March 15 at 10:56PM CDT until March 15 at 11:45PM CDT by NWS Nashville TN
Urban PEI: 994,618 within a heuristic 50 km radius; not unique people.
Nearby, since 12 March 2026
- March 16, 2026 · score 72 · 2.3 km
- August 1, 2026 · score 46 · 7.4 km
- July 11, 2026 · score 52 · 9.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 72 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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 | Critical |
| Calamity Score (ours) | 72 / 100 |
| Legacy data-support index | 0.77/1 |
| Coordinates | 36.3681, -86.3502 |
| Nearest City | Gallatin (9 km) |
| Urban exposure index (PEI) | 994.6K within 50 km |
| Impact Tier | catastrophic |
| Timestamp | 2026-03-16T03:56:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.b1fa86d1326512711ef9c7cf138c725d |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-03-16T03:56:00.000Z.
First archived: 2026-03-16T04:01:20.655Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Giles, TN; Lawrence, TN; Davidson, TN; Sumner, TN; Wilson, TN; Hardin, KY; Hart, KY; Larue, KY; Marion, KY; Nelson, KY; Washington, KY |
| Headline | Tornado Warning issued March 15 at 10:56PM CDT until March 15 at 11:45PM CDT by NWS Nashville TN |
| Expires | 2026-03-15T23:45:00-05:00 |
| SenderName | NWS Nashville TN |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b1fa86d1326512711ef9c7cf138c725dc14b7f27.001.1","noaa_urn:oid:2.49.0.1.840.0.268cb438dfebf6cf9f0a7bcf6016294860bb6f2c.001.1","noaa_urn:oid:2.49.0.1.840.0.797999a9052515b8c8b7aa59f43bcfc4833b6843.001.1"] |
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.
Review the area, threshold and delivery channel in your account.
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