Alert archive / Tennessee / Flash Flood Warnings in 2004

Flash Flood Warning 21, NWS Morristown, TN

July 5, 2004Blount County, Loudon County, Tennessee

NWS Morristown, TN issued this flash flood warning at Jul 5, 2004, 6:13 PM EDT for Blount County, Loudon 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 outline as issued.

The facts

Issued
Jul 5, 2004, 6:13 PM EDT (22:13 UTC)
Expired
Jul 5, 2004, 9:15 PM EDT
In force
3 hr
Issued by
NWS Morristown, TN
Area
Counties, with a storm outline in the text

Counties Blount County, TN, Loudon County, TN

The radar

The Knoxville radar (KMRX), 84 km from the middle of the area, began a volume at 22:16 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

Nashville Metro, TN (KBNA), launched 12:00Z, 10.2 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, Nashville Metro, TN at 12:00Z on 2004-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2320 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2004-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 187 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
2320 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
581 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
187 m²/s²
0-3 km storm-relative helicity
217 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.1

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMRX 052216
FFWMRX
TNC009-105-060115-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
613 PM EDT MON JUL 5 2004

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BLOUNT COUNTY IN EAST TENNESSEE
  LOUDON COUNTY IN EAST TENNESSEE

* UNTIL 915 PM EDT

* AT 606 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SERIES OF THUNDERSTORMS WITH VERY HEAVY RAIN OVER THE CUMBERLAND
  PLATEAU EXTENDING TOWARD THE GREAT SMOKY MOUNTAINS IN BLOUNT COUNTY.
  THESE STORMS WERE MOVING SOUTHEAST AT ABOUT 20 MPH AND WILL MOVE OVER
  THE SAME AREAS IN LOUDON AND BLOUNT COUNTIES REPEATEDLY.

RAIN RATES ESTIMATED BY RAINFALL ARE AROUND ONE TO TWO INCHES PER HOUR.
AN OFFICIAL RAIN GAGE IN CROSSVILLE REPORTED 0.97 INCH IN ONE HOUR. THESE
RATES WILL CONTINUE FOR THE NEXT TWO OR THREE HOURS AND THIS WILL CAUSE
LIFE THREATENING FLOODING. REPEAT...THIS IS A LIFE THREATENING SITUATION.

DURING HEAVY RAINS...KEEP CHILDREN AWAY FROM STORM DRAINS...WATER
CATCHMENTS...AND WATERWAYS. SHALLOW...GENTLY FLOWING WATER CAN BECOME
A RAGING TORRENT IN A MATTER OF MINUTES.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. TURN AROUND DONT DROWN VEHICLES CAUGHT IN RISING WATER
SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND.

DONT GET ON THE EVENING NEWS BY BRAVELY DRIVING INTO FLOOD WATERS.

LAT...LON 3579 8414 3585 8413 3584 8409 3557 8367
      3557 8375 3547 8395 3549 8393 3552 8400
      3556 8399 3555 8408 3568 8431 3565 8439
      3569 8454 3578 8437 3588 8433 3589 8425

$$

BB
1 follow-up statement
000 
WGUS74 KMRX 060055
FFSMRX
TNC009-105-060115-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
853 PM EDT MON JUL 5 2004

...A FLASH FLOOD WARNING CONTINUES FOR LOUDON AND BLOUNT COUNTIES
UNTIL 915 PM EDT...

AT 853 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE HEAVY RAIN HAS STOPPED. HOWEVER...THE THREAT OF FLASH FLOODING
STILL EXISTS FROM THE RUNOFF OF THE PREVIOUS HEAVY RAIN.

BLOUNT COUNTY OFFICIALS REPORT THAT NUMEROUS ROADS ARE BARRICADED
AROUND THE COUNTY DUE TO FLOODING. IF YOU COME TO A FLOODED OR CLOSED
ROAD, TURN AROUND DONT DROWN IT IS CLOSED FOR A REASON. 

LOUDON COUNTY HAS NOT HAD ANY REPORTS OF FLOODING, BUT IN THE DARK IT
IS SOMETIMES HARD TO SEE WATER ACROSS A ROAD.

MOST PEOPLE WHO DIE IN FLOODS, DIE IN THEIR CARS. DONT GET ON THE
EVENING NEWS BECAUSE YOU HAD TO BE RESCUED OR WORSE.

LAT...LON 3570 8367 3557 8367 3547 8395 3549 8393
      3552 8400 3556 8399 3555 8408 3568 8431
      3565 8457 3566 8457 3586 8422 3585 8421
      3579 8414 3585 8413 3584 8413 3582 8405
      3586 8400 3587 8401 3584 8385 3588 8379

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 8:44 PM EDTSevere Thunderstorm WarningMRXMcMinn46 min
Jul 5, 5:18 PM EDTSevere Thunderstorm WarningMRXMorgan, Roane87 min
Jul 5, 5:20 PM EDTFlash Flood WarningMRXRoane3 hr
Jul 5, 5:28 PM EDTSevere Thunderstorm WarningMRXKnox62 min
Jul 5, 5:38 PM EDTSevere Thunderstorm WarningMRXUnion37 min
Jul 5, 5:42 PM EDTSevere Thunderstorm WarningMRXBlount78 min
Jul 5, 5:48 PM EDTSevere Thunderstorm WarningMRXAnderson27 min
Jul 5, 5:50 PM EDTSevere Thunderstorm WarningMRXLoudon55 min
Jul 5, 5:53 PM EDTSevere Thunderstorm WarningMRXCampbell, Scott67 min
Jul 5, 6:18 PM EDTSevere Thunderstorm WarningMRXJefferson, Sevier72 min
Jul 5, 6:23 PM EDTSevere Thunderstorm WarningMRXMonroe52 min
Jul 5, 6:28 PM EDTSevere Thunderstorm WarningMRXClaiborne, Union62 min
Jul 5, 6:49 PM EDTSevere Thunderstorm WarningMRXCocke71 min
Jul 5, 7:10 PM EDTSevere Thunderstorm WarningMRXBradley, Polk50 min
Jul 5, 7:20 PM EDTSevere Thunderstorm WarningMRXGreene70 min
Jul 5, 7:45 PM EDTSevere Thunderstorm WarningMRXUnicoi60 min
Jul 5, 7:51 PM EDTSevere Thunderstorm WarningMRXHancock, Hawkins69 min

Nearby

Flash Flood Warnings in Tennessee, 2004Every flash flood warning in 2004

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.