This alert expired on 10 June 2026 at 00:45 UTC. It is kept here as a record.
It is the 6th strongest of the 27 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 9 at 4:45PM CDT until June 9 at 7:45PM CDT by NWS Louisville KY
An estimated 889,971 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 17, 2026 · score 48 · 5.2 km
- March 16, 2026 · score 54 · 8.5 km
- March 16, 2026 · score 67 · 18.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 48 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 48 / 100 |
| Our confidence | 80% |
| Coordinates | 36.5127, -87.1310 |
| Nearest City | Clarksville (21 km) |
| Population Exposed | 890.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-09T21:45:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.fa5ad1237d3fda3d54a0deb0f2de1934 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Logan, KY; Robertson, TN; Sumner, TN; Henry, TN; Weakley, TN |
| Headline | Flash Flood Warning issued June 9 at 4:45PM CDT until June 9 at 7:45PM CDT by NWS Louisville KY |
| Expires | 2026-06-09T19:45:00-05:00 |
| SenderName | NWS Louisville KY |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.fa5ad1237d3fda3d54a0deb0f2de1934bbb39be8.001.1","noaa_urn:oid:2.49.0.1.840.0.4ca94295f11f540a4f48a1973318d9648aedbc21.001.1","noaa_urn:oid:2.49.0.1.840.0.37a500b754b8a8607d289eae7de1070ad812718a.001.1","noaa_urn:oid:2.49.0.1.840.0.4ec3faa7d547f31f53ecb550ec2e4fc38debc9cf.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.
Want to know when something happens near Clarksville?
Calamity.live data shows a weather event with CalamityScore 48/100, near Clarksville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.