This alert expired on 22 July 2026 at 08:04 UTC. It is kept here as a record.
It is the 5th strongest of the 23 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 July 22 at 2:54AM CDT until July 22 at 3:00AM CDT by NWS Nashville TN
An estimated 160,853 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 2, 2026 · score 43 · 5.4 km
- August 8, 2026 · score 39 · 10.2 km
- August 8, 2026 · score 39 · 22.0 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, at 81 % 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) | 43 / 100 |
| Our confidence | 81% |
| Coordinates | 35.7111, -87.2635 |
| Nearest City | Columbia (23 km) |
| Population Exposed | 160.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-22T07:54:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.57a259688af994839cf8d161937b54d2 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Maury, TN; Davidson, TN; Smith, TN; Wilson, TN; Giles, TN; Lawrence, TN; Wayne, TN and 3 more areas |
| Headline | Flash Flood Warning issued July 22 at 2:54AM CDT until July 22 at 3:00AM CDT by NWS Nashville TN |
| Expires | 2026-07-22T03:04:00-05:00 |
| SenderName | NWS Nashville TN |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.57a259688af994839cf8d161937b54d2c13aa5e2.001.1","noaa_urn:oid:2.49.0.1.840.0.7c1108ac303ff56a10e5d4379bab352e30438e42.001.1","noaa_urn:oid:2.49.0.1.840.0.59b37e563f7bdc65fe829dee0eeccd5a4fe8fd20.001.1","noaa_urn:oid:2.49.0.1.840.0.f548e5d030dbdb9699600a92467de688c69a974f.001.1","noaa_urn:oid:2.49.0.1.840.0.3b1d21a263e9c663c91ad96992eadefacc3e55ea.001.1","noaa_urn:oid:2.49.0.1.840.0.ea78354a475e72bc7bcc052bceb5d5db360f1e86.001.1"] |
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 Columbia?
Calamity.live data shows a weather event with CalamityScore 43/100, near Columbia (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.