Right now
The most recent data we hold from NOAA arrived 24 minutes ago, and this point is in it.
3 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert expired on 22 September 2026 at 07:50 UTC. It is kept here as a record.
It is the 21st strongest of the 40 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued September 22 at 3:40AM EDT until September 22 at 3:45AM EDT by NWS Morristown TN
Urban PEI: 53,014 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- March 16, 2026 · score 39 · 7.3 km
- September 6, 2026 · score 32 · 10.8 km
- September 5, 2026 · score 32 · 10.8 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 32 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 v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 32 / 100 |
| Legacy data-support index | 0.92/1 |
| Coordinates | 36.9324, -82.6867 |
| Nearest City | Kingsport (44 km) |
| Urban exposure index (PEI) | 53.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-22T07:40:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.0b3f8653eb596a41d4d143a14d98daad7876c2d4.001.1 |
Physical priority index · v5. 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: 2026-09-22T07:40:00.000Z.
First archived: 2026-09-22T07:44:32.326Z. 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 | Wise, VA; City of Norton, VA |
| Headline | Flash Flood Warning issued September 22 at 3:40AM EDT until September 22 at 3:45AM EDT by NWS Morristown TN |
| Expires | 2026-09-22T03:50:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 6 NE Breaks Interstate |
| Spc County | Buchanan |
| Spc State | VA |
| Spc Comments | Tree down on Route 610 in the vicinity of Riverside Dr. All lanes blocked. Time estimated from radar. (RLX) |
| Iem TypeSummary | F |
| Iem City | Ages |
| Iem County | Harlan |
| Iem State | KY |
| Iem Wfo | JKL |
| Iem Remark | Corrects previous flash flood report from Ages. Law enforcement reported KY 38 was shut down at Ages. Pictures showed debris and flowing water over KY-38. Time is estimated. |
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.
Want to know when something happens in this area?