Alert archive / Virginia / Flash Flood Warnings in 2026

Flash Flood Warning 75, NWS Morristown, TN

August 17, 2026Carter County, Johnson County, Sullivan County, Tennessee; 4 counties in Virginia

NWS Morristown, TN issued this flash flood warning at Aug 17, 2026, 5:32 PM EDT for Carter County, Johnson County, Sullivan County, Tennessee; 4 counties in Virginia. 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
Aug 17, 2026, 5:32 PM EDT (21:32 UTC)
Expired
Aug 17, 2026, 8:21 PM EDT
In force
3 hr
Issued by
NWS Morristown, TN
Area
Storm-based polygon
Flood severity
None

Counties Carter County, TN, Johnson County, TN, Sullivan County, TN, City of Bristol, VA, Russell County, VA, Scott County, VA, Washington County, VA

The radar

The Knoxville radar (KMRX), 121 km from the middle of the area, began a volume at 21:32 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.5 hours before the alert went out and 345 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, Cncnati-Daytn, OH at 12:00Z on 2026-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 690 joules per kilogram.LCLLFCEL10008507005003002001001 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, Cncnati-Daytn, OH at 12:00Z on 2026-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 square meters per square second.193958Sfc1 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
690 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
576 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
60 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 17, 2:51 PM EDTSevere Thunderstorm WarningMRXCampbell, Scott54 min
Aug 17, 3:26 PM EDTSevere Thunderstorm WarningMRXAnderson, Campbell, Claiborne, Scott, Union64 min
Aug 17, 3:26 PM EDTSevere Thunderstorm WarningMRXJohnson, Sullivan49 min
Aug 17, 3:38 PM EDTSpecial Weather StatementMRXMcMinn, Monroe67 min
Aug 17, 3:48 PM EDTSpecial Weather StatementMRXJohnson42 min
Aug 17, 3:50 PM EDTSevere Thunderstorm WarningMRXAnderson, Knox40 min
Aug 17, 3:53 PM EDTSevere Thunderstorm WarningMRXSullivan52 min
Aug 17, 3:59 PM EDTSevere Thunderstorm WarningMRXBledsoe, Hamilton, Rhea, Sequatchie61 min
Aug 17, 4:07 PM EDTSevere Thunderstorm WarningMRXAnderson, Claiborne, Grainger, Hancock, Knox, Union53 min
Aug 17, 4:13 PM EDTSevere Thunderstorm WarningMRXLoudon, McMinn, Meigs, Monroe, Roane62 min
Aug 17, 4:21 PM EDTAreal Flood AdvisoryMRXJohnson, Sullivan3 hr
Aug 17, 4:27 PM EDTSevere Thunderstorm WarningMRXGrainger, Jefferson, Knox48 min
Aug 17, 4:30 PM EDTAreal Flood AdvisoryMRXAnderson, Campbell, Grainger, Jefferson, Knox, Morgan and 3 more3 hr
Aug 17, 4:31 PM EDTSpecial Weather StatementMRXJohnson44 min
Aug 17, 4:32 PM EDTAreal Flood AdvisoryMRXClaiborne3 hr
Aug 17, 4:33 PM EDTSevere Thunderstorm WarningMRXAnderson, Blount, Knox, Morgan, Roane, Sevier57 min
Aug 17, 4:42 PM EDTSevere Thunderstorm WarningMRXBlount, Loudon20 min
Aug 17, 4:43 PM EDTSevere Thunderstorm WarningMRXGrainger, Greene, Hamblen, Hancock, Hawkins62 min
Aug 17, 4:46 PM EDTSevere Thunderstorm WarningMRXCocke, Grainger, Greene, Hamblen, Jefferson44 min
Aug 17, 4:47 PM EDTSpecial Weather StatementMRXSullivan43 min
Aug 17, 4:49 PM EDTSpecial Weather StatementMRXMeigs41 min
Aug 17, 4:59 PM EDTSevere Thunderstorm WarningMRXBlount, Cocke, Sevier61 min
Aug 17, 5:01 PM EDTSpecial Weather StatementMRXLoudon44 min
Aug 17, 5:04 PM EDTSevere Thunderstorm WarningMRXHawkins, Sullivan41 min
Aug 17, 5:07 PM EDTSpecial Weather StatementMRXMorgan53 min
Aug 17, 5:09 PM EDTSpecial Weather StatementMRXPolk51 min
Aug 17, 5:12 PM EDTAreal Flood AdvisoryMRXCarter, Johnson, Sullivan3 hr
Aug 17, 5:18 PM EDTFlash Flood WarningMRXAnderson, Campbell, Knox, Morgan, Scott3 hr
Aug 17, 5:27 PM EDTSevere Thunderstorm WarningMRXCocke, Greene, Unicoi, Washington48 min
Aug 17, 5:28 PM EDTSpecial Weather StatementMRXHamilton47 min
Aug 17, 5:29 PM EDTSpecial Weather StatementMRXKnox, Sevier31 min
Aug 17, 5:31 PM EDTSpecial Weather StatementMRXMcMinn, Monroe, Polk44 min
Aug 17, 5:36 PM EDTSpecial Weather StatementMRXJohnson, Sullivan39 min
Aug 17, 5:54 PM EDTAreal Flood AdvisoryMRXAnderson, Blount, Knox, Roane, Sevier3 hr
Aug 17, 5:56 PM EDTSevere Thunderstorm WarningMRXCarter, Johnson, Sullivan, Washington34 min
Aug 17, 5:57 PM EDTSpecial Weather StatementMRXBlount, Sevier48 min
Aug 17, 6:00 PM EDTSpecial Weather StatementMRXMonroe45 min
Aug 17, 6:03 PM EDTSevere Thunderstorm WarningMRXBradley, Hamilton, Polk42 min
Aug 17, 6:03 PM EDTSevere Thunderstorm WarningMRXBlount, Cocke, Sevier27 min
Aug 17, 6:07 PM EDTSevere Thunderstorm WarningMRXUnicoi, Washington23 min
Aug 17, 6:11 PM EDTAreal Flood AdvisoryMRXBlount, Cocke, Knox, Sevier3 hr
Aug 17, 6:12 PM EDTSevere Thunderstorm WarningMRXMonroe33 min
Aug 17, 6:26 PM EDTSevere Thunderstorm WarningMRXMarion, Sequatchie37 min
Aug 17, 6:28 PM EDTSpecial Weather StatementMRXCarter32 min
Aug 17, 6:33 PM EDTSevere Thunderstorm WarningMRXMonroe57 min
Aug 17, 6:59 PM EDTSpecial Weather StatementMRXSullivan46 min
Aug 17, 7:00 PM EDTSpecial Weather StatementMRXBradley45 min
Aug 17, 7:10 PM EDTSpecial Weather StatementMRXMarion35 min
Aug 17, 7:31 PM EDTSevere Thunderstorm WarningMRXMarion29 min
Aug 17, 7:38 PM EDTSpecial Weather StatementMRXJohnson, Sullivan52 min
Aug 16, 10:31 PM EDTSevere Thunderstorm WarningMRXLee, Scott, Wise, City of Norton44 min
Aug 16, 11:06 PM EDTSevere Thunderstorm WarningMRXRussell, Scott, Washington, Wise, City of Bristol39 min
Aug 16, 11:07 PM EDTSpecial Weather StatementMRXScott38 min
Aug 16, 11:18 PM EDTSpecial Weather StatementMRXRussell42 min
Aug 17, 1:45 PM EDTSpecial Weather StatementMRXWise, City of Norton30 min
Aug 17, 2:15 PM EDTSpecial Weather StatementMRXRussell45 min
Aug 17, 2:42 PM EDTSpecial Weather StatementMRXWashington48 min
Aug 17, 2:45 PM EDTSevere Thunderstorm WarningMRXRussell, Washington45 min
Aug 17, 2:51 PM EDTSpecial Weather StatementMRXWise, City of Norton39 min
Aug 17, 3:00 PM EDTAreal Flood AdvisoryMRXRussell, Washington, Wise, City of Norton3 hr
Aug 17, 3:09 PM EDTSevere Thunderstorm WarningMRXRussell, Scott, Washington, Wise51 min
Aug 17, 3:40 PM EDTAreal Flood AdvisoryMRXRussell, Scott, Washington, Wise3 hr
Aug 17, 3:57 PM EDTFlash Flood WarningMRXRussell, Scott, Washington4 hr
Aug 17, 4:02 PM EDTSpecial Weather StatementMRXWashington43 min
Aug 17, 4:22 PM EDTSpecial Weather StatementMRXCity of Bristol23 min
Aug 17, 4:57 PM EDTSpecial Weather StatementMRXCity of Norton33 min
Aug 17, 5:10 PM EDTSpecial Weather StatementMRXLee35 min
Aug 17, 5:54 PM EDTSpecial Weather StatementMRXScott36 min
Aug 17, 5:24 PM EDTSpecial Weather StatementMRXCherokee51 min
Aug 17, 6:15 PM EDTSpecial Weather StatementMRXCherokee45 min

Nearby

Flash Flood Warnings in Virginia, 2026Flash Flood Warnings in Tennessee, 2026Every flash flood warning in 2026

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.