This alert expired on 30 May 2026 at 17:30 UTC. It is kept here as a record.
It is the 47th strongest of the 65 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 25 May 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 30 at 9:28AM EDT until May 30 at 1:30PM EDT by NWS Morristown TN
An estimated 270,425 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 3, 2026 · score 43 · 5.1 km
- July 8, 2026 · score 43 · 12.1 km
- August 9, 2026 · score 43 · 13.5 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 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) | 37 / 100 |
| Our confidence | 81% |
| Coordinates | 35.9034, -84.3548 |
| Nearest City | Oak Ridge (14 km) |
| Population Exposed | 270.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-30T13:28:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.dec1735f0f582e9bb2407089eead41e8 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Blount, TN; Loudon, TN; Morgan, TN |
| Headline | Flash Flood Warning issued May 30 at 9:28AM EDT until May 30 at 1:30PM EDT by NWS Morristown TN |
| Expires | 2026-05-30T13:30:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.dec1735f0f582e9bb2407089eead41e8dbee13c3.001.1","noaa_urn:oid:2.49.0.1.840.0.601693cb198d1efc9fae60a5041e99d5af466f31.001.1"] |
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 Oak Ridge?
Calamity.live data shows a weather event with CalamityScore 37/100, near Oak Ridge (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.