Alert archive / Tennessee / Flash Flood Warnings in 1998

Flash Flood Warning 49, NWS Morristown, TN

April 19, 1998Blount County, Loudon County, Monroe County, Tennessee; Cherokee County, North Carolina

NWS Morristown, TN issued this flash flood warning at Apr 19, 1998, 1:47 AM EDT for Blount County, Loudon County, Monroe County, Tennessee; Cherokee County, North Carolina. It was in force for 8 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
Apr 19, 1998, 1:47 AM EDT (05:47 UTC)
Expired
Apr 19, 1998, 10:00 AM EDT
In force
8 hr
Issued by
NWS Morristown, TN
Area
Whole counties

Counties Cherokee County, NC, Blount County, TN, Loudon County, TN, Monroe County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 5.8 hours before the alert went out and 233 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 00:00Z on 1998-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Nashville Metro, TN at 00:00Z on 1998-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
498 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
28 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 
TTAA00 KMRX 190548
FFWMRX
NCC039-TNC001-009-011-013-025-029-035-049-057-063-065-067-073-
089-093-105-107-121-123-129-139-143-145-151-155-173-VAC105-169-
195-191400-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
147 AM EDT (1247 AM CDT) SUN APR 19 1998

THE NATIONAL WEATHER SERVICE IN KNOXVILLE/TRI-CITIES HAS ISSUED A

* FLOOD WARNING FOR...
  ANDERSON COUNTY IN EASTERN TENNESSEE
  BLOUNT COUNTY IN EASTERN TENNESSEE
  BRADLEY COUNTY IN EASTERN TENNESSEE
  CAMPBELL COUNTY IN EASTERN TENNESSEE
  CLAIBORNE COUNTY IN EASTERN TENNESSEE
  COCKE COUNTY IN EASTERN TENNESSEE
  CUMBERLAND COUNTY IN EASTERN TENNESSEE
  FENTRESS COUNTY IN EASTERN TENNESSEE
  GRAINGER COUNTY IN EASTERN TENNESSEE
  HAMBLEN COUNTY IN EASTERN TENNESSEE
  HAMILTON COUNTY IN EASTERN TENNESSEE
  HANCOCK COUNTY IN EASTERN TENNESSEE
  HAWKINS COUNTY IN EASTERN TENNESSEE
  JEFFERSON COUNTY IN EASTERN TENNESSEE
  KNOX COUNTY IN EASTERN TENNESSEE
  LOUDON COUNTY IN EASTERN TENNESSEE
  MCMINN COUNTY IN EASTERN TENNESSEE
  MEIGS COUNTY IN EASTERN TENNESSEE
  MONROE COUNTY IN EASTERN TENNESSEE
  MORGAN COUNTY IN EASTERN TENNESSEE
  POLK COUNTY IN EASTERN TENNESSEE
  RHEA COUNTY IN EASTERN TENNESSEE
  ROANE COUNTY IN EASTERN TENNESSEE
  SCOTT COUNTY IN EASTERN TENNESSEE
  SEVIER COUNTY IN EASTERN TENNESSEE
  UNION COUNTY IN EASTERN TENNESSEE
  CHEROKEE COUNTY IN SOUTHWESTERN NORTH CAROLINA
  LEE COUNTY IN SOUTHWESTERN VIRGINIA
  SCOTT COUNTY IN SOUTHWESTERN VIRGINIA
  WISE COUNTY IN SOUTHWESTERN VIRGINIA

* UNTIL 1000 AM EDT (900 AM CDT)

* AT 135 AM EDT (1235 CDT)...RADAR INDICATED THAT A LARGE AREA OF
  HEAVY RAINFALL WAS LOCATED ACROSS MOST OF EAST TENNESSEE EARLY
  THIS MORNING AND WAS MOVING NORTHEAST AT 30 MPH.

* EXCESSIVE RAINFALL OF UP TO ONE ADDITIONAL INCH IS POSSIBLE
  OVERNIGHT WHICH WILL CAUSE ADDITIONAL FLOODING ACROSS THE AREA
  THROUGH 1000 AM EDT (900 AM CDT).

*DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD!

*THIS WARNING REPLACES ALL FLASH FLOOD WARNINGS CURRENTLY IN EFFECT.

PDK

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 18, 8:07 PM EDTFlash Flood WarningMRXRhea4 hr
Apr 18, 8:24 PM EDTFlash Flood WarningMRXHamilton, Meigs6 hr
Apr 18, 8:24 PM EDTFlash Flood WarningMRXRoane6 hr
Apr 18, 8:33 PM EDTSevere Thunderstorm WarningMRXRoane47 min
Apr 18, 8:35 PM EDTSevere Thunderstorm WarningMRXHamilton, Meigs, Rhea65 min
Apr 18, 8:50 PM EDTFlash Flood WarningMRXAnderson, Campbell, Scott5 hr
Apr 18, 8:50 PM EDTFlash Flood WarningMRXClaiborne5 hr
Apr 18, 9:01 PM EDTSevere Thunderstorm WarningMRXMcMinn34 min
Apr 18, 9:09 PM EDTSevere Thunderstorm WarningMRXAnderson51 min
Apr 18, 9:13 PM EDTFlash Flood WarningMRXBradley, McMinn, Polk6 hr
Apr 18, 9:28 PM EDTSevere Thunderstorm WarningMRXKnox, Union47 min
Apr 18, 9:46 PM EDTFlash Flood WarningMRXKnox, Union5 hr
Apr 18, 9:46 PM EDTFlash Flood WarningMRXLoudon, Monroe5 hr
Apr 18, 9:59 PM EDTSevere Thunderstorm WarningMRXBradley, Hamilton, Polk51 min
Apr 18, 10:14 PM EDTSevere Thunderstorm WarningMRXClaiborne, Grainger31 min
Apr 18, 10:29 PM EDTSevere Thunderstorm WarningMRXMonroe46 min
Apr 18, 10:30 PM EDTSevere Thunderstorm WarningMRXHancock35 min
Apr 18, 10:41 PM EDTTornado WarningMRXMonroe49 min
Apr 18, 10:48 PM EDTSevere Thunderstorm WarningMRXPolk32 min
Apr 18, 10:58 PM EDTSevere Thunderstorm WarningMRXGrainger, Hamblen, Jefferson32 min
Apr 18, 11:04 PM EDTFlash Flood WarningMRXCocke, Grainger, Hamblen, Hawkins, Jefferson5 hr
Apr 18, 11:04 PM EDTFlash Flood WarningMRXCumberland, Morgan5 hr
Apr 18, 11:04 PM EDTFlash Flood WarningMRXHancock5 hr
Apr 18, 11:04 PM EDTFlash Flood WarningMRXRhea5 hr
Apr 18, 11:04 PM EDTFlash Flood WarningMRXBlount, Sevier5 hr
Apr 18, 11:26 PM EDTSevere Thunderstorm WarningMRXMonroe34 min
Apr 18, 11:41 PM EDTSevere Thunderstorm WarningMRXBlount34 min
Apr 19, 1:47 AM EDTFlash Flood WarningMRXGrainger, Hamblen, Hancock, Hawkins8 hr
Apr 19, 1:47 AM EDTFlash Flood WarningMRXBradley, Hamilton, McMinn, Meigs, Polk8 hr
Apr 19, 1:47 AM EDTFlash Flood WarningMRXCumberland, Rhea, Roane8 hr
Apr 19, 1:47 AM EDTFlash Flood WarningMRXAnderson, Campbell, Claiborne, Scott, Union8 hr
Apr 19, 1:47 AM EDTFlash Flood WarningMRXFentress, Morgan8 hr
Apr 19, 1:47 AM EDTFlash Flood WarningMRXJefferson, Knox, Sevier8 hr
Apr 19, 1:47 AM EDTFlash Flood WarningMRXCocke8 hr
Apr 19, 3:19 AM EDTSevere Thunderstorm WarningMRXSevier61 min
Apr 19, 7:03 AM EDTFlash Flood WarningMRXCarter, Johnson, Sullivan3 hr
Apr 19, 7:03 AM EDTFlash Flood WarningMRXGreene, Unicoi, Washington3 hr
Apr 19, 9:39 AM EDTFlash Flood WarningMRXBlount, Sevier8 hr
Apr 19, 9:45 AM EDTFlash Flood WarningMRXKnox, Loudon, McMinn, Monroe8 hr
Apr 19, 9:45 AM EDTFlash Flood WarningMRXClaiborne, Grainger, Hancock, Union8 hr
Apr 18, 11:09 PM EDTSevere Thunderstorm WarningMRXCherokee61 min
Apr 19, 7:03 AM EDTFlash Flood WarningMRXClay3 hr

Nearby

Flash Flood Warnings in Tennessee, 1998Flash Flood Warnings in North Carolina, 1998Every flash flood warning in 1998

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.