This alert expired on 27 June 2026 at 04:15 UTC. It is kept here as a record.
No stronger detection stands among the 266 recorded within 20 km of this point since 16 March 2026 — 218 others scored the same. Another comparable one was recorded here earlier the same day. 14 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 26 at 10:09PM EDT until June 27 at 12:15AM EDT by NWS Louisville KY
An estimated 909,379 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 19, 2026 · score 48 · 6.3 km
- June 18, 2026 · score 41 · 9.0 km
- June 18, 2026 · score 48 · 18.7 km
How we know
Confirmed by 5 independent sources, including NOAA.
Our own score for this event is 48 out of 100, at 89 % 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 | 89% |
| Coordinates | 38.5090, -85.8267 |
| Nearest City | Clarksville (24 km) |
| Population Exposed | 909.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-27T02:09:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.abd3fa49476033ea7cacaaa56e70e004fd753d8e.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Clark, IN; Floyd, IN; Jefferson, IN; Scott, IN |
| Headline | Flash Flood Warning issued June 26 at 10:09PM EDT until June 27 at 12:15AM EDT by NWS Louisville KY |
| Expires | 2026-06-27T00:15:00-04:00 |
| SenderName | NWS Louisville KY |
| HasExactCoords | true |
| Iem TypeSummary | D |
| Iem City | 1 N Memphis |
| Iem County | Clark |
| Iem State | IN |
| Iem Wfo | LMK |
| Iem Remark | Time Estimated by Radar: Reports of an object impaling the roof of a home. Another report of roof damage from a separate home where roof was partially peeled off exposing the attic space. Occurred alo |
| MergedSources | [{"id":"iem_F_38.210_-86.470_1782524100000","source":"iem","severity":"low","severityValue":25,"timestamp":1782524100000,"latitude":38.21,"longitude":-86.47},{"id":"iem_F_38.430_-86.050_1782526020000","source":"iem","severity":"low","severityValue":25,"timestamp":1782526020000,"latitude":38.43,"longitude":-86.05},{"id":"iem_F_38.350_-86.450_1782523020000","source":"iem","severity":"low","severityValue":25,"timestamp":1782523020000,"latitude":38.35,"longitude":-86.45},{"id":"iem_D_38.500_-85.770_1782521880000","source":"iem","severity":"low","severityValue":25,"timestamp":1782521880000,"latitude":38.5,"longitude":-85.77}] |
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 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.