Alert archive / Georgia / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 230, NWS Atlanta, GA

September 20, 1993Meriwether County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Sep 20, 1993, 3:36 PM EDT for Meriwether County, Georgia. It was in force for 54 min.

The area

The counties it named.

The facts

Issued
Sep 20, 1993, 3:36 PM EDT (19:36 UTC)
Expired
Sep 20, 1993, 4:30 PM EDT
In force
54 min
Issued by
NWS Atlanta, GA
Area
Whole counties

County Meriwether County, GA

The nearest sounding before it

Athens Municipal, GA (KAHN), launched 12:00Z, 7.6 hours before the alert went out and 164 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 1993-09-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1054 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 1993-09-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 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
1054 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
589 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.3

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, Sep 20, 2:06 PM EDT, 1 hour 30 minutes before
GAZ003-005-202015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ATLANTA GA
206 PM EDT MON SEP 20 1993

...SCATTERED THUNDERSTORMS DEVELOPING OVER NORTHWEST AND WESTCENTRAL
   GEORGIA...

AT 200 PM EDT WEATHER SERVICE RADARS INDICATED A LINE OF THUNDERSTORMS
MOVING ACROSS NORTHWEST GEORGIA. THE LINE EXTENDED FROM NEAR DAWSONVILLE
IN DAWSON COUNTY TO LAGRANGE IN TROUP COUNTY. THE STRONGER OF THESE
STORMS WERE NEAR AUSTELL IN COBB COUNTY... AND NORTHWEST OF NEWNAN ON
THE CARROL COUNTY - COWETA COUNTY LINE. THE STORMS WERE MOVING EAST
AT 15 MPH.

THESE STORMS ARE CAPABLE OF PRODUCING STRONG GUSTY WINDS...DEADLY
LIGHTNING...HEAVY RAIN AND POSSIBLY SMALL HAIL.

PERSONS ACROSS WESTCENTRAL AND NORTHWEST GEORGIA SHOULD BE ON THE
ALERT AND BE READY TO RESPONSE QUICKLY IF THREATENING WEATHER
APPROACHES YOUR AREA.
Special weather statement, Sep 20, 2:06 PM EDT, 1 hour 30 minutes before
GAZ003-005-202015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ATLANTA GA
206 PM EDT MON SEP 20 1993

...SCATTERED THUNDERSTORMS DEVELOPING OVER NORTHWEST AND WESTCENTRAL
   GEORGIA...

AT 200 PM EDT WEATHER SERVICE RADARS INDICATED A LINE OF THUNDERSTORMS
MOVING ACROSS NORTHWEST GEORGIA. THE LINE EXTENDED FROM NEAR DAWSONVILLE
IN DAWSON COUNTY TO LAGRANGE IN TROUP COUNTY. THE STRONGER OF THESE
STORMS WERE NEAR AUSTELL IN COBB COUNTY... AND NORTHWEST OF NEWNAN ON
THE CARROL COUNTY - COWETA COUNTY LINE. THE STORMS WERE MOVING EAST
AT 15 MPH.

THESE STORMS ARE CAPABLE OF PRODUCING STRONG GUSTY WINDS...DEADLY
LIGHTNING...HEAVY RAIN AND POSSIBLY SMALL HAIL.

PERSONS ACROSS WESTCENTRAL AND NORTHWEST GEORGIA SHOULD BE ON THE
ALERT AND BE READY TO RESPONSE QUICKLY IF THREATENING WEATHER
APPROACHES YOUR AREA.
Special weather statement, Sep 20, 3:30 PM EDT, 6 minutes before
GAZ001-003-005-202215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ATLANTA GA
330 PM EDT MON SEP 20 1993

...SCATTERED THUNDERSTORMS CONTINUE TO MOVE EASTWARD ACROSS NORTHWEST
   GEORGIA...

AT 320 PM EDT WEATHER SERVICE RADARS INDICATED THE LINE OF THUNDERSTORMS
MOVING ACROSS NORTHWEST GEORGIA HAD MOVED EAST FROM NEAR CUMMING IN
FORSYTH COUNTY TO DECATUR IN EASTERN METORPOLITAN ATLANTA TO GREENVILLE
IN MERIWETHER COUNTY. STRONGEST STORMS AT 325 PM WERE EAST OF DECATUR
AND NEAR SENOIA IN SOUTHEAST COWEATA COUNTY. INDIVIDUAL STORMS WERE
MOVING EAST NORTHEAST AT 20 MILES AN HOUR.

THE STORMS ARE CAPABLE OF PRODUCING STRONG GUSTY WINDS...DEADLY
LIGHTNING...HEAVY RAIN AND POSSIBLY SMALL HAIL.

WITH THE APPROACH OF THE STORMS...RESIDENTS OF NORTHWEST GEORGIA
SHOULD BE PREPARED TO SEEK SAFETY QUICKLY.

SHOWERS AND LIGHT RAIN WERE ALSO FALLING FROM CHATTANOOGA TENNESSEE TO
ROME IN GEORGIA AND WILL CONTINUE THROUGH THE AFTERNOON.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 20, 2:49 PM EDTSevere Thunderstorm WarningFFCCoweta41 min
Sep 20, 3:36 PM EDTSevere Thunderstorm WarningFFCCoweta, Fayette54 min
Sep 20, 6:02 PM EDTSevere Thunderstorm WarningFFCDooly38 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1993Every severe thunderstorm warning in 1993

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.