Alert archive / Georgia / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 66, NWS Atlanta, GA

July 27, 1986Rabun County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 27, 1986, 2:19 PM EDT for Rabun County, Georgia. It was in force for 56 min.

The area

The counties it named.

The facts

Issued
Jul 27, 1986, 2:19 PM EDT (18:19 UTC)
Expired
Jul 27, 1986, 3:15 PM EDT
In force
56 min
Issued by
NWS Atlanta, GA
Area
Whole counties

County Rabun 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 321 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 1986-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 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 1986-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -71 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
7 J/kg
Mixed-layer CIN
-289 J/kg
Mixed-layer LCL
1091 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-71 m²/s²
0-3 km storm-relative helicity
-32 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 
TTAAOO KAHN 271819
SVRAHN
GAC241-271915-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ATHENS GA
219 PM EDT SUN JUL 27 1986
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL  315 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES:
 
IN NORTHEAST GEORGIA
          ..RABUN

A SEVERE THUNDERSTORM WAS IN RABUN COUNTY AT 215 PM
 
WHEN THUNDERSTORMS ARE OCCURRING, PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 27, 12:55 PM EDT, 1 hour 24 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ATHENS GEORGIA
1255  PM EDT SUN JUL 27 1986

THUNDERSTORMS FORMING AT A RAPID RATE OVER THE NORTHERN PART OF
GEORGIA AT 1 PM THIS AFTERNOON..

MAIN FORMING AREA HAS BEEN FROM ATHENS NORTHWESTWARD.

SEVERE CLOUD TO GROUND LIGHTNING IS EXPECTED ALONG WITH BRIEF
GUSTY WINDS AND HEAVY DOWNPOURS..

PERSONS SHOULD SEEK SHELTER AWAY FROM THE STORMS AS THEY FORM
NEAR THEM.

BOATERS SHOULD BE VERY ALERT TO ANY FORMING CLOUDS IN THEIR AREA.
Local storm report, Jul 27, 2:10 PM EDT, 9 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ATHENS GA

COUNTY........ BARROW

SOURCE........ DACULA PD

TIME.......... 205 PM 7/27/86

LOCATION...... 10 MILES WEST OF WINDER

TYPE STORM.... THUNDERSTORM

HAIL.......... NONE

DAMAGE........ TREES DOWN

INJURIES...... NONE

WARNING....... SEVERE THUNDERSTORM  2PM-3PM

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 1:13 PM EDTSevere Thunderstorm WarningFFCGwinnett62 min
Jul 27, 1:38 PM EDTSevere Thunderstorm WarningFFCCobb, Fulton57 min
Jul 27, 2:03 PM EDTSevere Thunderstorm WarningFFCBarrow57 min
Jul 27, 3:25 PM EDTSevere Thunderstorm WarningFFCHall50 min
Jul 27, 4:10 PM EDTSevere Thunderstorm WarningFFCCobb, Paulding50 min
Jul 27, 7:43 PM EDTSevere Thunderstorm WarningFFCHouston, Twiggs62 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.