Right now
The most recent data we hold from NOAA arrived 1 hour 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 11 July 2026 at 12:00 UTC. It is kept here as a record.
It is the 11th strongest of the 28 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued July 11 at 5:42AM EDT until July 11 at 8:00AM EDT by NWS Louisville KY
Urban PEI: 158,739 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- July 11, 2026 · score 43 · 0.0 km
- March 16, 2026 · score 72 · 14.4 km
- July 11, 2026 · score 48 · 18.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 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) | 43 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 38.0630, -85.1916 |
| Nearest City | Shelbyville (17 km) |
| Urban exposure index (PEI) | 158.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-11T09:42:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.3e30c94a8ca45bd30fbcfb96543769a3 |
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: 2026-07-11T09:42:00.000Z.
First archived: 2026-07-11T10:31:34.937Z. 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 | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Anderson, KY; Mercer, KY; Shelby, KY; Washington, KY; Anderson, KY; Nelson, KY; Shelby, KY; Spencer, KY; Fayette, KY; Jessamine, KY; Woodford, KY and 1 more areas |
| Headline | Flash Flood Warning issued July 11 at 5:42AM EDT until July 11 at 8:00AM EDT by NWS Louisville KY |
| Expires | 2026-07-11T08:00:00-04:00 |
| SenderName | NWS Louisville KY |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3e30c94a8ca45bd30fbcfb96543769a321a00c36.001.1","noaa_urn:oid:2.49.0.1.840.0.a83a442bff9c85e03252284c18cb423df745e527.002.1","noaa_urn:oid:2.49.0.1.840.0.e5b83199a04535232ab256ff3793e4b5038fa224.001.1","noaa_urn:oid:2.49.0.1.840.0.638930e6e2ab9ab54c158ac5c6df50755e4410c9.001.1"] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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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