Alert archive / Tennessee / Flash Flood Warnings in 1998

Flash Flood Warning 2, NWS Morristown, TN

January 7, 19984 counties in Tennessee

NWS Morristown, TN issued this flash flood warning at Jan 7, 1998, 11:07 AM EST for 4 counties in Tennessee. It was in force for 9 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
Jan 7, 1998, 11:07 AM EST (16:07 UTC)
Expired
Jan 7, 1998, 8:15 PM EST
In force
9 hr
Issued by
NWS Morristown, TN
Area
Whole counties

Counties Bradley County, TN, Hamilton County, TN, McMinn County, TN, Meigs County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 4.1 hours before the alert went out and 181 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 1998-01-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 10 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, Nashville Metro, TN at 12:00Z on 1998-01-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 square meters per square second.19395878Sfc1 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
10 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
552 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
108 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 071614
FFWMRX
TNC011-013-035-049-065-107-121-129-143-145-151-080115-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE KNOXVILLE TRI CITIES TN
1107 AM EST (1007 AM CST) WED JAN 7 1998

THE NATIONAL WEATHER SERVICE IN KNOXVILLE TRI CITIES HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL  815 PM EST (715 PM CST) FOR PEOPLE IN THE
FOLLOWING LOCATIONS...

IN EAST TENNESSEE

   ...BRADLEY COUNTY...CAMPBELL COUNTY...CUMBERLAND COUNTY
   ...FENTRESS COUNTY...HAMILTON COUNTY...MCMINN COUNTY...MEIGS COUNTY
   ...MORGAN COUNTY...RHEA COUNTY...ROANE COUNTY...SCOTT COUNTY

FLOODING FROM HEAVY RAINS HAS BEGUN TO OCCUR ALONG THE CUMBERLAND
PLATEAU AND AREAS JUST TO THE EAST. HEAVY RAIN IN THE MOUNTAINS AND
LOWLANDS IS CAUSING WIDESPREAD FLOODING OF STREAMS AND ROADWAYS. NUMEROUROADS HAVE BEEN CLOSED AND CLOSURES WILL LIKELY CONTINUE.

THE RAIN CAUSING THIS SITUATION EXTENDS INTO THE DEEP SOUTH AND THE
WHOLE SYSTEM IS MOVING VERY SLOWLY EASTWARD.  MODERATE TO HEAVY RAIN
WILL CONTINUE THROUGH TODAY AND OVERNIGHT.

A FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT.  MOST
FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT ATTEMPT TO CROSS
BRIDGES...DIPS...OR 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.

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 Jan 7, 10:15 AM EST, 52 minutes earlier.

Area forecast discussion, Jan 7, 10:15 AM EST, 52 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
1015 AM EST WED JAN 7 1998

TEMPS VERY CLOSE TO FCST HIGHS. WITH LOW CLD COVER AND STRATIFORM RAIN
DON'T THINK WE'LL SEE MUCH MOVExMENT THIS AFTN SO CAN LEAVE AS IS.
THUNDER SEEMS TO BE CONFINED TO SRN AL AND FL PANHANDLE. HAVE SEEN AN
OCCNL STRIKE IN UPSTATE SC AND WRN NC SO WOULD LEAVE IN MENTION OF
THNDR.  ALL IN ALL..CURRENT FCST LOOKS IN GOOD SHAPE.

HSA

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 7, 11:07 AM ESTFlash Flood WarningMRXCampbell, Fentress, Morgan, Scott9 hr
Jan 7, 11:07 AM ESTFlash Flood WarningMRXCumberland, Rhea, Roane9 hr
Jan 7, 3:35 PM ESTFlash Flood WarningMRXHamilton20 hr

Nearby

Flash Flood Warnings in Tennessee, 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.