Alert archive / Georgia / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 75, NWS Atlanta, GA

July 31, 1986Dade County, Walker County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 31, 1986, 2:15 PM EDT for Dade County, Walker County, Georgia. It was in force for 13 min.

The area

The counties it named.

The facts

Issued
Jul 31, 1986, 2:15 PM EDT (18:15 UTC)
Expired
Jul 31, 1986, 2:28 PM EDT
In force
13 min
Issued by
NWS Atlanta, GA
Area
Whole counties

Counties Dade County, GA, Walker County, GA

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, 6.3 hours before the alert went out and 184 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 1986-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 201 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 1986-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 175 square meters per square second.193958Sfc1 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
201 J/kg
Mixed-layer CIN
-437 J/kg
Mixed-layer LCL
1888 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
175 m²/s²
0-3 km storm-relative helicity
176 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCHA 311815
SVRCHA
GAC083-295-311828-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHATTANOOGA TN
215 PM EDT THU JUL 31 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 228 PM EDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

NORTHWEST GEORGIA...SOUTHERN DADE AND SOUTHERN WALKER

AT 208 PM EDT A SEVERE THUNDERSTORM WAS MOVING INTO SOUTH DADE
COUNTY OF NORTHWEST GEORGIA. THIS THUNDERSTORM WAS MOVING TO
THE SOUTHEAST AT 30 TO 40 MILES AN HOUR. RADAR INDICATED THAT
THIS STORM WAS PRODUCING HAIL. THESE STORMS HAVE PRODUCED
STRONG GUSTY WINDS WHEN THEY MOVED THROUGH SOUTHEAST
TENNESSEE.

 THIS IS A LARGE AND DANGEROUS STORM, PERSONS IN THE PATH OF THE STORM
 SHOULD TAKE SHELTER IMMEADIATELY.

 STAY TUNED TO THIS STATION FOR MORE INFORMATION

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 5:24 PM EDTSevere Thunderstorm WarningFFCHeard, Troup56 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1986Every severe thunderstorm warning in 1986

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.