Right now
The most recent data we hold from NOAA arrived 48 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 7 km from here.
This alert expired on 30 May 2026 at 11:45 UTC. It is kept here as a record.
It is the 38th strongest of the 65 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 30 at 3:46AM EDT until May 30 at 7:45AM EDT by NWS Morristown TN
An estimated 81,121 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 11, 2026 · score 43 · 4.8 km
- July 5, 2026 · score 43 · 5.0 km
- September 5, 2026 · score 37 · 6.5 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 85 % 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) | 39 / 100 |
| Our confidence | 85% |
| Coordinates | 36.0888, -82.6647 |
| Nearest City | Greeneville (17 km) |
| Population Exposed | 81.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-30T07:46:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.ef83e5ff1d201602d04ca95ad8fa47570d238365.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Greene, TN |
| Headline | Flash Flood Warning issued May 30 at 3:46AM EDT until May 30 at 7:45AM EDT by NWS Morristown TN |
| Expires | 2026-05-30T07:45:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | true |
| Iem TypeSummary | F |
| Iem City | 3 SW Liberty |
| Iem County | Greene |
| Iem State | TN |
| Iem Wfo | MRX |
| Iem Remark | Emergency management reported flash flooding was ongoing in the Horse Creek Recreation area and that people were being evacuated. |
| MergedSources | [{"id":"iem_F_36.110_-82.660_1780126800000","source":"iem","severity":"low","severityValue":25,"timestamp":1780126800000,"latitude":36.11,"longitude":-82.66}] |
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 Greeneville?
Calamity.live data shows a weather event with CalamityScore 39/100, near Greeneville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.