Alert archive / Tennessee / Flash Flood Warnings in 2025

Flash Flood Warning 23, NWS Morristown, TN

June 26, 2025McMinn County, Tennessee

NWS Morristown, TN issued this flash flood warning at Jun 26, 2025, 6:52 AM EDT for McMinn County, Tennessee. It was in force for 113 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 26, 2025, 6:52 AM EDT (10:52 UTC)
Expired
Jun 26, 2025, 8:45 AM EDT
In force
113 min
Issued by
NWS Morristown, TN
Area
Storm-based polygon
Flood severity
None

County McMinn County, TN

The radar

The Knoxville radar (KMRX), 137 km from the middle of the area, began a volume at 10:51 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, 10.9 hours before the alert went out and 229 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.

Skew-T log-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 00:00Z on 2025-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3661 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 00:00Z on 2025-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
3661 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1589 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
-9 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Jun 26, 1:34 AM EDT, 5 hours 18 minutes earlier.

Area forecast discussion, Jun 26, 1:34 AM EDT, 5 hours 18 minutes before
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Hazardous weather outlook, Jun 26, 1:40 AM EDT, 5 hours 12 minutes before
Hazardous Weather Outlook
National Weather Service Morristown TN
140 AM EDT Thu Jun 26 2025

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-270545-
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-
140 AM EDT Thu Jun 26 2025 /1240 AM CDT Thu Jun 26 2025/

This Hazardous Weather Outlook is for portions of southwest North
Carolina...east Tennessee and southwest Virginia.

.DAY ONE...Today and Tonight

Heat index values are forecast to reach near 105 across the
southern and central Tennessee Valley, and southern Plateau
Thursday. A Heat Advisory is in effect.

Isolated severe storms are possible this afternoon and evening,
with the main hazards being damaging winds and localized flash
flooding.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Afternoon and evening thunderstorms are likely through the
weekend. Isolated severe storms are possible each day, with the
main hazards being damaging winds and localized flash flooding.

.SPOTTER INFORMATION STATEMENT...

Due to the limited coverage of severe storms, spotter activation
is not needed at this time. However, any storm reports are
appreciated.

In the hours before

Special weather statement, Jun 26, 5:55 AM EDT, 57 minutes before
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The office that day

Everything else NWS Morristown, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 25, 8:14 PM EDTSpecial Weather StatementMRXMorgan31 min
Jun 26, 5:55 AM EDTSpecial Weather StatementMRXMcMinn35 min
Jun 26, 6:25 AM EDTAreal Flood AdvisoryMRXMcMinn2 hr
Jun 26, 11:29 AM EDTSpecial Weather StatementMRXWashington46 min
Jun 26, 12:14 PM EDTSevere Thunderstorm WarningMRXHawkins, Sullivan46 min
Jun 26, 12:27 PM EDTAreal Flood AdvisoryMRXCarter, Hawkins, Sullivan, Washington3 hr
Jun 26, 12:52 PM EDTSpecial Weather StatementMRXWashington38 min
Jun 26, 2:08 PM EDTAreal Flood AdvisoryMRXJohnson, Sullivan2 hr
Jun 26, 3:15 PM EDTSpecial Weather StatementMRXGrainger45 min
Jun 26, 3:17 PM EDTSpecial Weather StatementMRXCampbell43 min
Jun 26, 6:07 PM EDTSpecial Weather StatementMRXRoane53 min
Jun 26, 7:17 PM EDTSpecial Weather StatementMRXRhea43 min
Jun 26, 7:29 PM EDTSevere Thunderstorm WarningMRXBledsoe, Rhea, Roane19 min
Jun 26, 7:35 PM EDTSpecial Weather StatementMRXMarion40 min
Jun 26, 12:02 PM EDTSpecial Weather StatementMRXScott43 min
Jun 26, 12:47 PM EDTSevere Thunderstorm WarningMRXLee, Scott43 min
Jun 26, 12:55 PM EDTSpecial Weather StatementMRXCity of Bristol50 min
Jun 26, 1:58 PM EDTSevere Thunderstorm WarningMRXWashington47 min
Jun 26, 5:37 PM EDTSpecial Weather StatementMRXClay68 min

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.