Right now
The most recent data we hold from NOAA arrived 6 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 21 July 2026 at 22:00 UTC. It is kept here as a record.
It is the 17th strongest of the 39 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 21 at 5:03PM EDT until July 21 at 6:00PM EDT by NWS Louisville KY
Nearby, since 15 March 2026
- July 17, 2026 · score 34 · 14.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 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 | Medium |
| Calamity Score (ours) | 16 / 100 |
| Legacy data-support index | 0.59/1 |
| Coordinates | 38.3090, -83.7599 |
| Nearest City | Winchester (51 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-21T21:03:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.7721f1bf6df434ea1fa11871c39567e8 |
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: 2026-07-21T21:03:00.000Z.
First archived: 2026-07-21T21:06:45.635Z. 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 | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Edmonson, KY; Grayson, KY; Hardin, KY; Hart, KY; Larue, KY; Butler, KY; Ohio, KY; Warren, KY; Ballard, KY; Carlisle, KY; Graves, KY and 10 more areas |
| Headline | Severe Thunderstorm Warning issued July 21 at 5:03PM EDT until July 21 at 6:00PM EDT by NWS Louisville KY |
| Expires | 2026-07-21T18:00:00-04:00 |
| SenderName | NWS Louisville KY |
| HasExactCoords | true |
| MergedCount | 13 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7721f1bf6df434ea1fa11871c39567e89ee63d38.001.1","noaa_urn:oid:2.49.0.1.840.0.27f6398e0b8928d14e5df1615a85064b34c0d785.001.1","noaa_urn:oid:2.49.0.1.840.0.f182dffddcc1e48d49d98df278cf141089cd0232.001.1","noaa_urn:oid:2.49.0.1.840.0.0c0602e28310d8c1f1177d6f3ad38c702330b68d.001.1","noaa_urn:oid:2.49.0.1.840.0.ce84d8b5eebe22e17abdb23ab6de437f91a28ccb.001.1","noaa_urn:oid:2.49.0.1.840.0.92354c0b14de8b6c3b5ac61781dbe9037f5206da.001.1","noaa_urn:oid:2.49.0.1.840.0.211ba30aac21657f58a6e6bde622a5384c2f9080.001.1","noaa_urn:oid:2.49.0.1.840.0.33af16c51c957a832a4f2400e6e47529267a8ad9.002.1","noaa_urn:oid:2.49.0.1.840.0.7ba36cda80f631478f43114a39d76d5a8e733a2f.002.1","noaa_urn:oid:2.49.0.1.840.0.4937e7093d9c1ff126345acdebfe6a0d9f0d8ac4.002.1","noaa_urn:oid:2.49.0.1.840.0.3468c92f533e886543a7d10ebb969e652e16520e.001.1","noaa_urn:oid:2.49.0.1.840.0.fe4202c96806c948cb4cea1a315e7d88f216c4bf.001.1","noaa_urn:oid:2.49.0.1.840.0.bce7458633c5b2ad82067dc3b9c9b47368e47faf.001.1"] |
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.
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