Alert archive / Georgia / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 90, NWS Atlanta, GA

April 19, 1991Fannin County, Gilmer County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 19, 1991, 12:33 PM EDT for Fannin County, Gilmer County, Georgia. It was in force for 27 min.

The area

The counties it named.

The facts

Issued
Apr 19, 1991, 12:33 PM EDT (16:33 UTC)
Expired
Apr 19, 1991, 1:00 PM EDT
In force
27 min
Issued by
NWS Atlanta, GA
Area
Whole counties

Counties Fannin County, GA, Gilmer County, GA

The nearest sounding before it

Athens Municipal, GA (KAHN), launched 12:00Z, 4.6 hours before the alert went out and 136 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 1991-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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, Athens Municipal, GA at 12:00Z on 1991-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 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
803 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
104 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 KATL 191635 COR
SVRATL
GAC111-123-191700-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTION
NATIONAL WEATHER SERVICE ATLANTA  GA
1233 PM EDT FRI APR 19 1991

THE NATIONAL WEATHER SERVICE IN ATLANTA  HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  100 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN NORTHWEST GEORGIA

   ...FANNIN COUNTY...GILMER COUNTY

AT 1220 PM EDT RADAR INDICATED HAIL IN A THUNDERSTORM ABOUT 10 MILES
NORTH OF ELLIJAY IN NORTH GILMER COUNTY. THE STORM WAS MOVING EAST AT
25 MPH.


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.

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, Apr 19, 11:49 AM EDT, 44 minutes before
GAZ003-005-191700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ATLANTA  GA
1145 AM EDT FRI APR 19 1991

AT 1145 AM EDT...NATIONAL WEATHER SERVICE RADAR IN ATLANTA WAS SHOWING
A LINE OF STRONG THUNDERSTORMS LOCATED FROM NEAR LAKE HIWASSE IN NORTH
CAROLINA SOUTH TO NEAR DALTON.  SOME OF THE STRONGEST THUNDERSTORMS WILL
BE MOVING INTO FANNIN AND GILMER COUNTIES DURING THE NEXT HOUR.

THE THUNDERSTORMS WERE MOVING EAST AT 25 MILES AN HOUR AND WILL PASS JUST
NORTH OF THE CITY OF ELLIJAY AND INTO THE NOTTELY LAKE AREA OF GILMER AND
FANNIN COUNTIES.

PEOPLE IN THESE NORTH GEORGIA COUNTIES CAN EXPECT BRIEF PERIODS OF HEAVY
RAINS..DANGEROUS LIGHTNING..STRONG GUSTY WINDS AND SOME SMALL HAIL A+S
THESE STORMS MOVE THROUGH THE AREA.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 19, 1:11 PM EDTSevere Thunderstorm WarningFFCFloyd38 min
Apr 19, 2:10 PM EDTSevere Thunderstorm WarningFFCHall65 min
Apr 19, 3:03 PM EDTSevere Thunderstorm WarningFFCPaulding42 min
Apr 19, 3:46 PM EDTSevere Thunderstorm WarningFFCMadison59 min
Apr 19, 3:51 PM EDTSevere Thunderstorm WarningFFCCoweta39 min
Apr 19, 4:00 PM EDTSevere Thunderstorm WarningFFCHeard40 min
Apr 19, 4:33 PM EDTSevere Thunderstorm WarningFFCPolk27 min
Apr 19, 4:45 PM EDTSevere Thunderstorm WarningFFCGwinnett30 min
Apr 19, 4:52 PM EDTSevere Thunderstorm WarningFFCClayton, Fayette, Henry68 min
Apr 19, 5:11 PM EDTSevere Thunderstorm WarningFFCMorgan, Newton64 min
Apr 19, 5:28 PM EDTSevere Thunderstorm WarningFFCGwinnett32 min
Apr 19, 5:33 PM EDTSevere Thunderstorm WarningFFCTwiggs57 min
Apr 19, 5:52 PM EDTSevere Thunderstorm WarningFFCCherokee38 min
Apr 19, 6:10 PM EDTSevere Thunderstorm WarningFFCColumbia, Richmond65 min
Apr 19, 6:12 PM EDTSevere Thunderstorm WarningFFCMorgan, Newton, Walton63 min
Apr 19, 6:46 PM EDTSevere Thunderstorm WarningFFCBurke44 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1991Every severe thunderstorm warning in 1991

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.