Alert archive / Virginia / Flash Flood Warnings in 2001

Flash Flood Warning 9, NWS Morristown, TN

July 29, 20015 counties in Tennessee; 7 counties in Virginia

NWS Morristown, TN issued this flash flood warning at Jul 29, 2001, 9:27 AM EDT for 5 counties in Tennessee; 7 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: Jul 29, 2001, 9:27 AM EDT (13:27 UTC)
Expired: Jul 29, 2001, 12:30 PM EDT
In force: 3 hr
Issued by: NWS Morristown, TN
Area: Whole counties

Counties Carter County, TN, Johnson County, TN, Sullivan County, TN, Unicoi County, TN, Washington County, TN, City of Bristol, VA, City of Norton, VA, Lee County, VA, Russell County, VA, Scott County, VA, Washington County, VA, Wise County, VA

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 1.5 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 459 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS54 KMRX 291337
FFWMRX

TNC019-091-163-171-179-VAC105-167-169-191-195-520-720-291630-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
927 AM EDT SUN JUL 29 2001

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CARTER COUNTY IN EAST TENNESSEE
  JOHNSON COUNTY IN EAST TENNESSEE
  SULLIVAN COUNTY IN EAST TENNESSEE
  UNICOI COUNTY IN EAST TENNESSEE
  WASHINGTON COUNTY IN EAST TENNESSEE
  CITY OF BRISTOL IN SOUTHWEST VIRGINIA
  CITY OF NORTON IN SOUTHWEST VIRGINIA
  LEE COUNTY IN SOUTHWEST VIRGINIA
  RUSSELL COUNTY IN SOUTHWEST VIRGINIA
  SCOTT COUNTY IN SOUTHWEST VIRGINIA
  WASHINGTON COUNTY IN SOUTHWEST VIRGINIA
  WISE COUNTY IN SOUTHWEST VIRGINIA

* UNTIL 1230 PM EDT

* AT 930 AM EDT...TRAINED WEATHER SPOTTERS AND LAW ENFORCEMENT
OFFICIALS REPORTED AREAS OF FLASH FLOODING OCCURRING ACROSS MUCH OF 
SOUTHWEST VIRGINIA AND NORTHEAST TENNESSEE. THE MOST WIDESPREAD 
CONDITIONS WERE OCCURRING ALONG THE CLINCH RIVER IN VIRGINIA.
FLOODING IS BEING REPORTED ON VARIOUS ROADWAYS. ISOLATED EVACUATIONS
HAVE BEEN REQUIRED. 

ANOTHER LINE OF SHOWERS AND THUNDERSTORMS WILL MOVE EAST ACROSS
THE WARNED AREAS THIS MORNING. THIS ACTIVITY WILL BE ALONG THE  
KENTUCKY AND VIRGINIA BORDER AROUND 945 AM EDT AND MOVE EAST TO THE 
MOUNTAINS OF NORTHEAST TENNESSEE AROUND 1100 AM EDT.

EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF 
CREEKS AND STREAMS...ROADS AND ROADSIDE CULVERTS. THE HEAVY RAINS 
COULD ALSO TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN. IF FLASH 
FLOODING IS OBSERVED...ACT QUICKLY AND MOVE TO HIGHER GROUND TO 
ESCAPE FLOOD WATERS.

MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS
BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO
ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

$$

17

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 12:20 PM EDT	Flash Flood Warning	MRX	Carter, Johnson, Sullivan, Unicoi, Washington	4 hr
Jul 29, 3:38 PM EDT	Flash Flood Warning	MRX	Carter, Johnson, Sullivan	4 hr
Jul 29, 2:15 AM EDT	Flash Flood Warning	MRX	Lee	3 hr
Jul 29, 3:40 AM EDT	Flash Flood Warning	MRX	Russell, Scott, Washington, Wise, City of Norton	4 hr

Nearby

Flash Flood Warnings in Virginia, 2001 Flash Flood Warnings in Tennessee, 2001 Every flash flood warning in 2001

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.