Alert archive / Georgia / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 108, NWS Atlanta, GA

November 20, 1986Bibb County, Houston County, Twiggs County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Nov 20, 1986, 12:25 PM EST for Bibb County, Houston County, Twiggs County, Georgia. It was in force for 35 min. 3 reports 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
Nov 20, 1986, 12:25 PM EST (17:25 UTC)
Expired
Nov 20, 1986, 1:00 PM EST
In force
35 min
Issued by
NWS Atlanta, GA
Area
Whole counties

Counties Bibb County, GA, Houston County, GA, Twiggs 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
Nov 20, 12:30 PM ESTThunderstorm Wind 0Bibb, GA
Nov 20, 12:30 PM ESTThunderstorm Wind 0Twiggs, GA
Nov 20, 12:45 PM ESTThunderstorm Wind 0Twiggs, 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 12:00Z, 5.4 hours before the alert went out and 148 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 12:00Z on 1986-11-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLEL10008507005003002001001 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 12:00Z on 1986-11-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 594 square meters per square second.1939587897Sfc1 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
2 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
504 m above ground
0-6 km bulk shear
73 kt
0-1 km storm-relative helicity
594 m²/s²
0-3 km storm-relative helicity
760 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Nov 20, 8:41 AM EST, 3 hours 44 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ATLANTA GA
840 AM EST THU NOV 20 1986

A BAND OF STRONG THUNDERSTORMS IS MOVING INTO NORTHWEST GEORGIA
THIS MORNING.  THE THUNDERSTORMS EXTENDED FROM JUST SOUTH OF ROME
TO CARROLONTON AND LAGRANGE AT 835 AM.

THE POLICE DEPARTMENT IN BREMEN IN HARALSON COUNTY REPORTED STRONG
GUSTY WINDS OF 45 MPH AS THIS BAND OF THUNDERSTORMS MOVED THROUGH
AT 8 30 AM.

THIS BAND OF THUNDERSTORMS IS MOVING RAPIDLY EAST AT 45 MPH AND SHOULD
APPROACH THE WESTERN SUBURBS OF ATLANTA BETWEEN 9 AND 9 30 AM.

PEROPLE IN THE AREA SHOULD BE ALERT FOR STRONG GUSTY WINDS OF 45 TO
50 MPH AND BRIEF HEAVY RAIN AS THIS SYSTEM MOVES IN FROM THE WEST.
Special weather statement, Nov 20, 10:10 AM EST, 2 hours 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MACON GA
1008 AM EST THU NOV 20 1986

AT 10 AM A NARROW BAND OF STRONG THUNDERSTORMS WAS LOCATED IN NORTH
CENTRAL GEORGIA FROM NEAR COVINGTON TO GRIFFIN.

THESE THUNDERSTORMS WERE MOVING RAPIDLY EAST AND WILL BE MOVING TO
NEAR MONTICELLO AND THE REST OF NORTHERN JASPER COUNTY WITHIN THE
NEXT HALF HOUR.

THESE THUNDERSTORMS WILL PRODUCE STRONG GUSTY WINDS AND BRIEF HEAVY
RAINS AS THEY CONTINUE TO MqOVE EAST NEAR 50 MPH.
Special weather statement, Nov 20, 10:42 AM EST, 1 hour 43 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBUS, GA
1040 AM EST THU NOV 20 1986

A SCATTERED AREA OF STRONG THUNDERSTORMS WAS MOVING ACROSS EAST
CENTRAL ALABAMA AND WAS APPROACHING WEST CENTRAL GEORGIA. THESE
STORMS WERE THE LEADING EDGE OF A LARGE AREA OF RAIN AND WERE
SCATTERED FROM 15 MILES EAST OF MONTGOMERY ALABAMA ACROSS OPELIKA
TO NEAR LANETT. MOVEMENT WAS TO THE EAST AT NEAR 30 MILES AN HOUR.

PEOPLE IN THE AREA SHOULD BE PREPARED FOR STRONG GUSTY WINDS OF
30 TO 40 MPH WITH BRIEF HEAVY RAIN. SOME QUICK FLOODING OF STREETS
AND SMALL STREAMS IN THE COLUMBUS AREA WILL LIKELY TAKE PLACE AS
THESE STORMS AND THIS LARGE AREA OF RAIN MOVES THROUGH. LISTEN TO
NOAA RADIO FOR FURTHER STATEMENTS OR POSSIBLE WARNINGS FOR THE NEXT
COUPLE OF HOURS UNTIL THE THREAT OF THESE STORMS MOVES ON EAST.
Special weather statement, Nov 20, 11:07 AM EST, 1 hour 18 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MACON GA
1105 AM EST THU NOV 20 1986

AT 1100 AM A NARROW BAND OF THUNDERSTORMS WAS IN LINE FROM NEAR
EATONTON WEST TO NEAR FORSYTH AND CONTINUED TO NEAR LAGRANGE.

NO SEVERE WEATHER HAS BEEN REPORTED IN CENTRAL GEORGIA...HOWEVER
THESE THUNDERSTORMS WILL PRODUCE STRONG GUSTY WINDS AND PERIODS OF
HEAVY RAINS.

BECAUSE OF PRIOR RAINFALL AMOUNTS NEAR TWO INCHS...LOCALIZED FLOODING
OF STREETS AND POOR DRAINAGE AREAS IS POSSIBLE WITH THESE THUNDERSTORMS
AS THEY CONTINUE TO MOVE EAST.

UPDATES CAN BE HEARD ON THE NOAA WEATHER RADIO THROUGHOUT THIS
AFTERNOON.



The office that day

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

IssuedProductOfficeCountiesLasted
Nov 20, 8:51 AM ESTSevere Thunderstorm WarningFFCDouglas, Fulton54 min
Nov 20, 8:51 AM ESTSevere Thunderstorm WarningFFCPaulding54 min
Nov 20, 9:04 AM ESTSevere Thunderstorm WarningFFCCobb, Fulton56 min
Nov 20, 9:13 AM ESTSevere Thunderstorm WarningFFCDeKalb, Henry, Rockdale62 min
Nov 20, 9:13 AM ESTSevere Thunderstorm WarningFFCForsyth, Gwinnett62 min
Nov 20, 9:40 AM ESTSevere Thunderstorm WarningFFCBarrow, Walton60 min
Nov 20, 9:40 AM ESTSevere Thunderstorm WarningFFCNewton60 min
Nov 20, 10:05 AM ESTSevere Thunderstorm WarningFFCClarke, Oconee35 min
Nov 20, 10:05 AM ESTSevere Thunderstorm WarningFFCMorgan35 min
Nov 20, 10:30 AM ESTSevere Thunderstorm WarningFFCGreene, Oglethorpe, Taliaferro20 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.