This alert expired on 8 August 2026 at 23:45 UTC. It is kept here as a record.
It is the 9th strongest of the 14 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 22 July 2026.
What the source measured
NOAA reported: Flash Flood Warning issued August 8 at 3:44PM CDT until August 8 at 6:45PM CDT by NWS Nashville TN
An estimated 88,214 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 14, 2026 · score 28 · 13.1 km
- July 2, 2026 · score 43 · 19.1 km
- July 2, 2026 · score 43 · 19.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 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) | 39 / 100 |
| Our confidence | 80% |
| Coordinates | 35.8138, -87.4721 |
| Nearest City | Dickson (31 km) |
| Population Exposed | 88.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-08T20:44:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.ceeb24fff283cdd7b25ed6dd09045ea2 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Lewis, TN; Perry, TN; Wayne, TN; Davidson, TN; Sumner, TN; Montgomery, TN; Robertson, TN and 2 more areas |
| Headline | Flash Flood Warning issued August 8 at 3:44PM CDT until August 8 at 6:45PM CDT by NWS Nashville TN |
| Expires | 2026-08-08T18:45:00-05:00 |
| SenderName | NWS Nashville TN |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ceeb24fff283cdd7b25ed6dd09045ea2fac96f9d.001.1","noaa_urn:oid:2.49.0.1.840.0.e9a829e9d0718285a635ba67282d8b69653381d9.001.1","noaa_urn:oid:2.49.0.1.840.0.ff757884ef237a93be4f20fcdc42f35b11327aaf.001.1","noaa_urn:oid:2.49.0.1.840.0.66b5f33c38d594a3285bba1e8a9d65b81b34c319.001.1","noaa_urn:oid:2.49.0.1.840.0.923b700abb179484dafba44112d9f79ed41e011f.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 in this area?
Calamity.live data shows a weather event with CalamityScore 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.