Alert archive / Tennessee / Flash Flood Warnings in 2025
Flash Flood Warning 32, NWS Morristown, TN
NWS Morristown, TN issued this flash flood warning at Jul 9, 2025, 8:42 PM EDT for Sevier County, Tennessee. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 9, 2025, 8:42 PM EDT (00:42 UTC)
- Expired
- Jul 10, 2025, 12:00 AM EDT
- In force
- 3 hr
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Flood severity
- None
County Sevier County, TN
The radar
The Knoxville radar (KMRX), 44 km from the middle of the area, began a volume at 00:45 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 0.7 hours before the alert went out and 283 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 2020 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1220 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Morristown, TN wrote its last area forecast discussion before this flash flood warning went out at Jul 9, 7:11 PM EDT, 1 hour 31 minutes earlier.
Area forecast discussion, Jul 9, 7:11 PM EDT, 1 hour 31 minutes before
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</html>Hazardous weather outlook, Jul 9, 1:36 PM EDT, 7 hours 6 minutes before
Hazardous Weather Outlook National Weather Service Morristown TN 136 PM EDT Wed Jul 9 2025 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-101745- Cherokee-Clay-Scott TN-Campbell-Claiborne-Hancock-Hawkins- Sullivan-Johnson-Morgan-Anderson-Union-Grainger-Hamblen- Northwest Cocke-Cocke Smoky Mountains-Northwest Greene- Southeast Greene-Washington TN-Unicoi-Northwest Carter- Southeast Carter-Roane-Loudon-Knox-Jefferson-Northwest Blount- Blount Smoky Mountains-North Sevier-Sevier Smoky Mountains- Sequatchie-Bledsoe-Rhea-Meigs-McMinn-Northwest Monroe- Southeast Monroe-Marion-Hamilton-Bradley-West Polk-East Polk-Lee- Wise-Scott VA-Russell-Washington VA- 136 PM EDT Wed Jul 9 2025 /1236 PM CDT Wed Jul 9 2025/ This Hazardous Weather Outlook is for portions of southwest North Carolina...east Tennessee and southwest Virginia. .DAY ONE...This Afternoon and Tonight Showers and thunderstorms are expected to develop this afternoon and evening. Some storms may become strong to severe. Primary hazards with any strong to severe activity will be damaging wind gusts and flash flooding. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter reports of thunderstorm damage or flash flooding is appreciated.
In the hours before
Special weather statement, Jul 9, 6:23 PM EDT, 2 hours 19 minutes before
Special Weather Statement
National Weather Service Morristown TN
623 PM EDT Wed Jul 9 2025
TNZ017-018-046-VAZ008-092315-
Sullivan TN-Northwest Carter TN-Johnson TN-Washington VA-
623 PM EDT Wed Jul 9 2025
...A STRONG THUNDERSTORM WILL IMPACT CENTRAL SULLIVAN...NORTHWESTERN
JOHNSON...NORTHEASTERN CARTER AND SOUTHWESTERN WASHINGTON COUNTIES
AND THE CITY OF BRISTOL THROUGH 715 PM EDT...
At 623 PM EDT, Doppler radar was tracking a strong thunderstorm over
Walnut Hill, or near Bristol Tn, moving east at 30 mph.
HAZARD...Wind gusts up to 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Bristol Tn, Bristol Va, Walnut Hill, Bluff City, South Holston Dam,
Morril's Cave, Harr, Blountville, Sadie, and Shady Valley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3641 8192 3646 8237 3660 8232 3660 8230
3661 8231 3662 8230 3664 8188
TIME...MOT...LOC 2223Z 275DEG 27KT 3655 8227
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
DGSThe office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 8:18 PM EDT | Areal Flood Advisory | MRX | Blount, Sevier | 30 min |
| Jul 9, 9:00 PM EDT | Areal Flood Advisory | MRX | Blount, Loudon, McMinn, Monroe | 2 hr |
| Jul 10, 12:01 AM EDT | Areal Flood Advisory | MRX | Greene | 3 hr |
| Jul 10, 3:54 PM EDT | Areal Flood Advisory | MRX | Cherokee | 2 hr |
Nearby
Flash Flood Warnings in Tennessee, 2025Every flash flood warning in 2025
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.