Alert archive / Georgia / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 15, NWS Atlanta, GA

April 7, 1986Union County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 7, 1986, 6:57 AM EST for Union County, Georgia. It was in force for 48 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 7, 1986, 6:57 AM EST (11:57 UTC)
Expired
Apr 7, 1986, 7:45 AM EST
In force
48 min
Issued by
NWS Atlanta, GA
Area
Whole counties

County Union County, GA

The radar

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

What was reported inside it

TimeReportWhereRemark
Apr 7, 7:17 AM ESTHail 1.75Union, GA

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Athens Municipal, GA (KAHN), launched 00:00Z, 12.0 hours before the alert went out and 117 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, Athens Municipal, GA at 00:00Z on 1986-04-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Athens Municipal, GA at 00:00Z on 1986-04-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2755 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
93 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 KAHN 071157
SVRAHN
GAC291-071300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ATHENS GA
657 AM EST MON APR 7 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 800 AM EST FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

NORTHEAST GEORGIA...UNION

AT 650 AM HAIL WAS OCCURING IN FANNIN COUNTY OUT OF A HEAVY
THUNDERSTORM AND THIS STORM WAS MOVING TOWARD UNION COUNTY.
THIS STORM ALSO WILL PROUDUCE SEVERE LIGHTNING AND
LIKELY TO HAVE VERY GUSTY WINDS.

 A SEVERE THUNDERSTORM IS DEFINED AS HAVING WINDS AT LEAST 58 MPH
 AND/OR HAIL 3/4 INCH IN DIAMETER OR LARGER. IF THREATENING
 WEATHER APPROACHES...TAKE IMMEDIATE 1PRECAUTIONS.

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, Apr 7, 6:42 AM EST, 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ATHENS GA
 630 AM MON APRIL 7 1986

 ISOLATED HEAVY THUNDERSTORMS LOCATED IN SOUTHEASTERN CORNER
OT TENNESSEE MOVING SOUTHEASTWARD AT 35 MILES AN HOUR AND
SOME LIKELY TO ENTER EXTREME NORTH GEORGIA DURING THE NEXT
HOUR..

THE BLAIRSVILLE AREA..UNION COUNTY AND TOWNS COUNTY SHOULD
REMAIN ALERT AS THESE STORMS START MOVING IN..

STORMS LIKELY TO PRODUCE SEVERE CLOUD TO GROUND LIGHTNING
AND "GUSTY WINDS...

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 7, 7:00 AM ESTSevere Thunderstorm WarningFFCFannin60 min
Apr 7, 7:20 AM ESTSevere Thunderstorm WarningFFCLumpkin, White25 min
Apr 7, 7:20 AM ESTSevere Thunderstorm WarningFFCDawson25 min
Apr 7, 8:23 AM ESTSevere Thunderstorm WarningFFCFannin37 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.