Alert archive / Tennessee / Flash Flood Warnings in 1993

Flash Flood Warning 4, NWS Atlanta, GA

March 23, 1993Rhea County, Tennessee

NWS Atlanta, GA issued this flash flood warning at Mar 23, 1993, 10:52 AM EST for Rhea County, Tennessee. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Mar 23, 1993, 10:52 AM EST (15:52 UTC)
Expired
Mar 23, 1993, 1:00 PM EST
In force
2 hr
Issued by
NWS Atlanta, GA
Area
Whole counties

County Rhea County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 3.9 hours before the alert went out and 162 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 1993-03-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 100 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 1993-03-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 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
100 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
543 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
112 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 KCHA 231554
FFWCHA
TNC143-231800-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHATTANOOGA TN
1052 AM EST TUE MAR 23 1993
 
THE NATIONAL WEATHER SERVICE IN CHATTANOOGA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  100 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST TENNESSEE
 
   ...CENTRAL RHEA COUNTY
 
AT 1045 AM EST THE RHEA COUNTY SHERIFF'S OFFICE REPORTED
FLASH FLOODING IN SPRING CITY AT THE NORTH END OF FRONT
STREET AND ALSO ALONG SMITH STREET IN THE AREA ON THE
NORTH SIDE OF PINEY CREEK.  FLASH FLOODING WAS ALSO
OCCURRING IN EVENSVILLE.
 
PERSONS IN  AND NEAR THESE AREAS SHOULD EVACUATE AND SEEK
HIGHER GROUND IMMEDIATELY.
 
A FLASH 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.
 
 
 
&

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 23, 10:37 AM ESTFlash Flood WarningFFCMarion3 hr
Mar 23, 12:12 PM ESTFlash Flood WarningFFCHamilton3 hr
Mar 23, 4:26 PM ESTSevere Thunderstorm WarningFFCHamilton49 min

Nearby

Flash Flood Warnings in Tennessee, 1993Every flash flood warning in 1993

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.