This alert expired on 21 July 2026 at 20:30 UTC. It is kept here as a record.
It is the strongest of the 227 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 18 July 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued July 21 at 4:17PM EDT until July 21 at 4:30PM EDT by NWS Louisville KY
An estimated 961,444 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 22, 2026 · score 48 · 3.5 km
- June 22, 2026 · score 48 · 6.8 km
- July 21, 2026 · score 48 · 8.3 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, at 79 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | critical |
| Calamity Score (ours) | 72 / 100 |
| Our confidence | 79% |
| Coordinates | 37.9283, -85.7883 |
| Nearest City | Radcliff (17 km) |
| Population Exposed | 961.4K within 50 km |
| Impact Tier | catastrophic |
| Timestamp | 2026-07-21T20:17:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.31ef269af891b3883dc4ab29d68dbf8e5b29b6a2.002.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Bullitt, KY |
| Headline | Tornado Warning issued July 21 at 4:17PM EDT until July 21 at 4:30PM EDT by NWS Louisville KY |
| Expires | 2026-07-21T16:30:00-04:00 |
| SenderName | NWS Louisville KY |
| HasExactCoords | true |
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 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.
Want to know when something happens near Radcliff?
Calamity.live data shows a weather event with CalamityScore 72/100, near Radcliff (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.