Alert archive / Tennessee / Flash Flood Warnings in 1992

Flash Flood Warning 2, NWS Atlanta, GA

July 24, 1992Hamilton County, Tennessee

NWS Atlanta, GA issued this flash flood warning at Jul 24, 1992, 3:40 PM EDT for Hamilton County, Tennessee. It was in force for 65 min.

The area

The counties it named.

The facts

Issued
Jul 24, 1992, 3:40 PM EDT (19:40 UTC)
Expired
Jul 24, 1992, 4:45 PM EDT
In force
65 min
Issued by
NWS Atlanta, GA
Area
Whole counties

County Hamilton County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 7.7 hours before the alert went out and 167 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 1992-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1597 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 1992-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 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
1597 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
585 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
85 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCHA 241947
FFWCHA
TNC065-242045-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHATTANOOGA TN
340 PM EDT FRI JUL 24 1992
 
THE NATIONAL WEATHER SERVICE IN CHATTANOOGA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  445 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST TENNESSEE
 
   ...NORTH CENTRAL HAMILTON COUNTY
 
 
AT 340 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED A STRONG
THUNDERSTORM WITH VERY HEAVY RAIN AFFECTING THE COMMUNITIES
OF BAKEWELL...SODDY-DAISY...SALEM AND NEW SALEM IN NORTH CENTRAL
HAMILTON COUNTY OF SOUTHEAST TENNESSEE.
 
REPORTS FROM THE HAMILTON COUNTY SHERIFF'S DEPARTMENT AT 335 PM
EDT INDICATED THAT HIGHWAY 27 WAS COVERED WITH THREE FEET OF WATER
FROM THE HEAVY RAINS.
 
THE THNDERSTORM OVER NORTH CENTRAL HAMILTON COUNTY IS MOVING VERY
SLOWLY EASTWARD AND WILL CONTINUE TO DROP VERY HEAVY RAINFALL OVER
NORTH CENTRAL AND NORTHEAST HAMILTON COUNTY OVER THE NEXT HOUR.
 
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.

Nearby

Flash Flood Warnings in Tennessee, 1992Every flash flood warning in 1992

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.