Right now
The most recent data we hold from NOAA arrived 2 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 25 May 2026 at 02:30 UTC. It is kept here as a record.
No stronger detection stands among the 62 recorded within 20 km of this point since 16 March 2026 — 31 others scored the same. The last comparable one was on 20 May 2026. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 24 at 8:30PM EDT until May 24 at 10:30PM EDT by NWS Morristown TN
An estimated 286,915 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 25, 2026 · score 43 · 0.0 km
- March 16, 2026 · score 43 · 7.8 km
- August 12, 2026 · score 43 · 11.2 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 90 % 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) | 43 / 100 |
| Our confidence | 90% |
| Coordinates | 35.8900, -83.8427 |
| Nearest City | Knoxville (10 km) |
| Population Exposed | 286.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-25T00:30:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.d1556efc5219b0a51f62db52ae5cf93e3bf400a2.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Blount, TN; Knox, TN |
| Headline | Flash Flood Warning issued May 24 at 8:30PM EDT until May 24 at 10:30PM EDT by NWS Morristown TN |
| Expires | 2026-05-24T22:30:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | true |
| Iem TypeSummary | F |
| Iem City | 1 ENE Loudon |
| Iem County | Loudon |
| Iem State | TN |
| Iem Wfo | MRX |
| Iem Remark | Several roadways flooded. |
| MergedSources | [{"id":"iem_F_35.940_-83.910_1779669240000","source":"iem","severity":"low","severityValue":25,"timestamp":1779669240000,"latitude":35.94,"longitude":-83.91},{"id":"iem_F_35.740_-84.340_1779667860000","source":"iem","severity":"low","severityValue":25,"timestamp":1779667860000,"latitude":35.74,"longitude":-84.34}] |
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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