Right now
The most recent data we hold from NOAA arrived 3 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 28 May 2026 at 15:30 UTC. It is kept here as a record.
It is the 14th strongest of the 30 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 May 28 at 7:27AM EDT until May 28 at 11:30AM EDT by NWS Morristown TN
An estimated 44,572 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 28, 2026 · score 39 · 5.8 km
- May 28, 2026 · score 39 · 10.7 km
- August 13, 2026 · score 39 · 15.0 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 91 % 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) | 34 / 100 |
| Our confidence | 91% |
| Coordinates | 36.0136, -82.9945 |
| Nearest City | Greeneville (22 km) |
| Population Exposed | 44.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-28T11:27:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.10bbbf4561236b7175766d4295bd1f8c |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Cocke, TN; Greene, TN; Cocke, TN |
| Headline | Flash Flood Warning issued May 28 at 7:27AM EDT until May 28 at 11:30AM EDT by NWS Morristown TN |
| Expires | 2026-05-28T11:30:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.10bbbf4561236b7175766d4295bd1f8cf84b623f.001.1","noaa_urn:oid:2.49.0.1.840.0.8e1997304a0fb0d3d073e98e11e2b950f30ac45a.001.1"] |
| Iem TypeSummary | F |
| Iem City | 1 ENE Bybee |
| Iem County | Cocke |
| Iem State | TN |
| Iem Wfo | MRX |
| Iem Remark | Several roads reported flooded in North Cocke County. |
| MergedSources | [{"id":"iem_F_36.070_-83.180_1779962700000","source":"iem","severity":"low","severityValue":25,"timestamp":1779962700000,"latitude":36.07,"longitude":-83.18},{"id":"iem_F_36.050_-83.170_1779966000000","source":"iem","severity":"low","severityValue":25,"timestamp":1779966000000,"latitude":36.05,"longitude":-83.17}] |
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 34/100, near Greeneville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.