Right now
The most recent data we hold from NOAA arrived 38 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
15 other detections within 20 km in the last 24 hours, the nearest 3 km from here.
This alert expired on 24 September 2026 at 02:45 UTC. It is kept here as a record.
It is the 2nd strongest of the 31 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued September 23 at 8:45PM EDT until September 23 at 10:45PM EDT by NWS Morristown TN
Nearby, since 16 March 2026
- September 4, 2026 · score 16 · 13.1 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 16 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) | 16 / 100 |
| Legacy data-support index | 0.66/1 |
| Coordinates | 37.1310, -83.0416 |
| Nearest City | Kingsport (78 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-24T00:45:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.5f8924bd23db466a857bfb521399f10d809413e9.001.1 |
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: 2026-09-24T00:45:00.000Z.
First archived: 2026-09-24T00:49:32.404Z. Material modification: 2026-09-24T01:05:40.182Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-24T01:05:40.182Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-24T00:54:55.561Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Anderson, TN; Knox, TN; Bell, KY; Harlan, KY; Leslie, KY; Clay, KY and 4 more areas |
| Headline | Flash Flood Warning issued September 23 at 8:45PM EDT until September 23 at 10:45PM EDT by NWS Morristown TN |
| Expires | 2026-09-23T22:45:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5f8924bd23db466a857bfb521399f10d809413e9.001.1","noaa_urn:oid:2.49.0.1.840.0.06ccfc878657b699f5043355761833155a8a3645.001.1","noaa_urn:oid:2.49.0.1.840.0.1a862b924e9969183529c849126a817bbdce7b32.002.1","noaa_urn:oid:2.49.0.1.840.0.818a6860dd36326870bf39da4c673c8a7c6b1042.001.1","noaa_urn:oid:2.49.0.1.840.0.c36c792871c64966a2dac9e94a7250620b0e0d6f.001.1","noaa_urn:oid:2.49.0.1.840.0.b1ba0a8ebff10c91ff36fcc9dc1756b2b613a7ad.001.1","noaa_urn:oid:2.49.0.1.840.0.653313b48e16f9a1c08adde9462b6120c3cd9db5.001.1"] |
| Iem TypeSummary | R |
| Iem Magnitude | 3.24 |
| Iem Unit | Inch |
| Iem City | Beverly |
| Iem County | Bell |
| Iem State | KY |
| Iem Wfo | JKL |
| Iem Remark | In the past 8 hours or so. |
| MergedSources | [{"id":"iem_R_36.930_-83.530_1790210340000","source":"iem","severity":"low","severityValue":25,"timestamp":1790210340000,"latitude":36.93,"longitude":-83.53}] |
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.
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