Right now
The most recent data we hold from NOAA arrived 37 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 30 May 2026 at 13:15 UTC. It is kept here as a record.
It is the 27th strongest of the 45 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 25 May 2026. 10 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 30 at 5:08AM EDT until May 30 at 9:15AM EDT by NWS Morristown TN
An estimated 316,393 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 12, 2026 · score 43 · 6.8 km
- May 20, 2026 · score 43 · 7.8 km
- March 16, 2026 · score 43 · 15.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 out of 100, at 79 % 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) | 37 / 100 |
| Our confidence | 79% |
| Coordinates | 36.1131, -83.7779 |
| Nearest City | Knoxville (21 km) |
| Population Exposed | 316.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-30T09:08:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.2a2b12381b761c9d48d523e1464d29b4 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Anderson, TN; Campbell, TN; Morgan, TN; Scott, TN; Anderson, TN; Morgan, TN; Greene, TN |
| Headline | Flash Flood Warning issued May 30 at 5:08AM EDT until May 30 at 9:15AM EDT by NWS Morristown TN |
| Expires | 2026-05-30T09:15:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2a2b12381b761c9d48d523e1464d29b48b87c836.001.1","noaa_urn:oid:2.49.0.1.840.0.4493bcea62cf3b649c13f7acf100d8a2eea44c21.001.1","noaa_urn:oid:2.49.0.1.840.0.ef83e5ff1d201602d04ca95ad8fa47570d238365.001.1"] |
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.
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