Right now
The most recent data we hold from NOAA arrived 9 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 22 July 2026 at 08:30 UTC. It is kept here as a record.
No stronger detection stands among the 68 recorded within 20 km of this point since 16 March 2026 — 46 others scored the same. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued July 22 at 12:24AM CDT until July 22 at 3:30AM CDT by NWS Nashville TN
Urban PEI: 1,147,109 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- September 2, 2026 · score 46 · 4.4 km
- July 20, 2026 · score 52 · 8.7 km
- July 22, 2026 · score 52 · 9.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 52 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 36.0044, -86.9553 |
| Nearest City | Franklin (11 km) |
| Urban exposure index (PEI) | 1.1M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-22T05:24:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.d71c354605f4eec621d9f9f0448843bf |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-07-22T05:24:00.000Z.
First archived: 2026-07-22T05:39:26.690Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Giles, TN; Lawrence, TN; Wayne, TN; Maury, TN; Dickson, TN; Hickman, TN and 7 more areas |
| Headline | Flash Flood Warning issued July 22 at 12:24AM CDT until July 22 at 3:30AM CDT by NWS Nashville TN |
| Expires | 2026-07-22T03:30:00-05:00 |
| SenderName | NWS Nashville TN |
| HasExactCoords | true |
| MergedCount | 10 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d71c354605f4eec621d9f9f0448843bf0ff2fced.001.1","noaa_urn:oid:2.49.0.1.840.0.cfc56c8be87335b7e8feee18ef37829be61b77e0.001.1","noaa_urn:oid:2.49.0.1.840.0.ea78354a475e72bc7bcc052bceb5d5db360f1e86.001.1","noaa_urn:oid:2.49.0.1.840.0.ccfdbca93b424a3499a13af6e0c4de26d87f9986.001.1","noaa_urn:oid:2.49.0.1.840.0.87c9cf65e015c4561aab7d6b362b2c9ab5e91b8e.001.1","noaa_urn:oid:2.49.0.1.840.0.9c3f56c775173b7e03c48abcfbb66d96b35dffd2.001.1","noaa_urn:oid:2.49.0.1.840.0.9128d1e0d0e1f0311257f1c6455298f4160d5da0.001.1","noaa_urn:oid:2.49.0.1.840.0.7417b07c3f437a7e870a8cc8449925981806093a.001.1","noaa_urn:oid:2.49.0.1.840.0.44ae14cf5d91a749f8b9f473bafbe3facfe7d0e5.001.1","noaa_urn:oid:2.49.0.1.840.0.2ae5bd72dbc6938c5320b7680c0c4fde7c8d7249.001.1"] |
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.
Review the area, threshold and delivery channel in your account.
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