Alert archive / Georgia / Severe Thunderstorm Warnings in 1988

Severe Thunderstorm Warning 162, NWS Atlanta, GA

July 31, 1988Catoosa County, Georgia; Hamilton County, Tennessee

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 31, 1988, 6:42 PM EDT for Catoosa County, Georgia; Hamilton County, Tennessee. It was in force for 48 min.

The area

The counties it named.

The facts

Issued
Jul 31, 1988, 6:42 PM EDT (22:42 UTC)
Expired
Jul 31, 1988, 7:30 PM EDT
In force
48 min
Issued by
NWS Atlanta, GA
Area
Whole counties

Counties Catoosa County, GA, Hamilton County, TN

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 10.7 hours before the alert went out and 178 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 1988-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1115 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 1988-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 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
1115 J/kg
Mixed-layer CIN
-67 J/kg
Mixed-layer LCL
978 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
12 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 312245
SVRCHA
GAC047-TNC065-312330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHATTANOOGA TN
642 PM EDT SUN JUL 31 1988
 
THE NATIONAL WEATHER SERVICE IN CHATTANOOGA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  730 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN NORTHWEST GEORGIA
          ...CATOOSA
IN SOUTHEAST TENNESSEE
          ...HAMILTON
 
AT 640PM EDT WEATHER RADAR INDICATED SEVERE THUNDERSTORMS OVER
CATOOSA COUNTY GEORGIA EXTENTING NORTH INTO THE HAMILTON COUNTY
BORDER AREA OF SOUTHEAST TENNESSE.
 
ALSO RADAR INDICATE A LARGE SEVERE THUNDERSTORM OVER THE NORTHERN
HALF OF HAMILTON COUNTY IN SOUTHEAST TENNESSEE.
 
THESE THUNDERSTORMS HAVE THE POTENTIAL OF PRODUCING STRONG DAMAGEING
WIND ALONG WITH LARGE HAIL. THEY WILL ALSO PRODUCE LOCALLY VERY
HEAVY RAIN FALL AND DANGEROUS LIGHTNING.
 
THE THUNDSTORMS SHOW VERY LITTLE MOVEMENT AT THE CURRENT TIME.
 
PERSONS IN AND NEAR THE WARNING AREAS SHOULD REMAIN ALERT FOR
ADVERSE WEATHER CONDITIONS.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

Nearby

Severe Thunderstorm Warnings in Georgia, 1988Severe Thunderstorm Warnings in Tennessee, 1988Every severe thunderstorm warning in 1988

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.