Right now
The most recent data we hold from NOAA arrived 5 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 26 May 2026 at 04:30 UTC. It is kept here as a record.
It is the 4th strongest of the 22 detections recorded within 20 km of this point since 16 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 25 at 10:26PM EDT until May 26 at 12:30AM EDT by NWS Morristown TN
Nearby, since 16 March 2026
- May 26, 2026 · score 22 · 0.0 km
- May 26, 2026 · score 22 · 19.2 km
- July 1, 2026 · score 22 · 23.5 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 70 % 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) | 22 / 100 |
| Our confidence | 70% |
| Coordinates | 35.2391, -83.5480 |
| Nearest City | Maryville (69 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-26T02:26:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.12ae0724ac109240c6fbc8039fabd7c5 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Hamilton, TN; Clay, NC; Transylvania, NC and 1 more areas |
| Headline | Flash Flood Warning issued May 25 at 10:26PM EDT until May 26 at 12:30AM EDT by NWS Morristown TN |
| Expires | 2026-05-26T00:30:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.12ae0724ac109240c6fbc8039fabd7c51bb73d1e.001.1","noaa_urn:oid:2.49.0.1.840.0.8ac0c3b64f4ff69b192453221c156747418bfae7.001.1","noaa_urn:oid:2.49.0.1.840.0.d518fb17c9983f4b3e93579736a1ca5eeaa7ea6b.001.1","noaa_urn:oid:2.49.0.1.840.0.54909a2b6e1e49d2b8ab81b744c5829cc84a1b1b.001.1"] |
| Iem TypeSummary | F |
| Iem City | 2 SE Pigeon Forge |
| Iem County | Sevier |
| Iem State | TN |
| Iem Wfo | MRX |
| Iem Remark | Mud slide reported near the Spur. Several roadways with flooding issues. |
| MergedSources | [{"id":"iem_F_35.030_-83.740_1779761580000","source":"iem","severity":"low","severityValue":25,"timestamp":1779761580000,"latitude":35.03,"longitude":-83.74},{"id":"iem_F_35.770_-83.530_1779757740000","source":"iem","severity":"low","severityValue":25,"timestamp":1779757740000,"latitude":35.77,"longitude":-83.53}] |
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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