This alert expired on 23 May 2026 at 02:02 UTC. It is kept here as a record.
It is the 2nd strongest of the 87 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 May 22 at 9:52PM EDT until May 22 at 10:00PM EDT by NWS Wilmington OH
An estimated 953,023 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 27, 2026 · score 48 · 4.9 km
- July 11, 2026 · score 48 · 6.3 km
- July 8, 2026 · score 48 · 9.7 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 48 out of 100, at 83 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 48 / 100 |
| Our confidence | 83% |
| Coordinates | 38.1581, -85.4087 |
| Nearest City | Jeffersontown (14 km) |
| Population Exposed | 953.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-23T01:52:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.da2b74ee88442654c4c66d2dc95fe62f |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Boone, KY; Campbell, KY; Gallatin, KY; Grant, KY; Kenton, KY; Owen, KY; Pendleton, KY; Franklin, KY; Shelby, KY; Breckinridge, KY |
| Headline | Flash Flood Warning issued May 22 at 9:52PM EDT until May 22 at 10:00PM EDT by NWS Wilmington OH |
| Expires | 2026-05-22T22:02:00-04:00 |
| SenderName | NWS Wilmington OH |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.da2b74ee88442654c4c66d2dc95fe62f6ec9f07a.001.1","noaa_urn:oid:2.49.0.1.840.0.3237aa52cf78b533d648c7cb4fd41a857b4646d5.001.1","noaa_urn:oid:2.49.0.1.840.0.0564b263a352dbbbff6e38a6371f2a3e67537449.001.1"] |
| Iem TypeSummary | F |
| Iem City | 1 W Graefenburg |
| Iem County | Shelby |
| Iem State | KY |
| Iem Wfo | LMK |
| Iem Remark | Water flowing over Bardstown Trail. Road is closed. |
| MergedSources | [{"id":"iem_F_38.150_-85.050_1779492600000","source":"iem","severity":"low","severityValue":25,"timestamp":1779492600000,"latitude":38.15,"longitude":-85.05}] |
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 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 Jeffersontown?
Calamity.live data shows a weather event with CalamityScore 48/100, near Jeffersontown (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.