Alert archive / Georgia / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 468, NWS Atlanta, GA

September 10, 1997Forsyth County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Sep 10, 1997, 6:29 PM EDT for Forsyth County, Georgia. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 10, 1997, 6:29 PM EDT (22:29 UTC)
Expired
Sep 10, 1997, 7:15 PM EDT
In force
46 min
Issued by
NWS Atlanta, GA
Area
Whole counties

County Forsyth County, GA

The radar

The Atlanta radar (KFFC), 104 km from the middle of the area, began a volume at 22:32 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.5 hours before the alert went out and 101 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, Peachtre/Fal Fld, GA at 12:00Z on 1997-09-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 554 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, Peachtre/Fal Fld, GA at 12:00Z on 1997-09-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
554 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
874 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
14 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KATL 102231 RRA
SVRATL
GAC117-102315-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
629 PM EDT WED SEP 10 1997
 
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  715 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHWEST GEORGIA
 
   ...SOUTHERN FORSYTH COUNTY
 
AT 625 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM NEAR ALPHARETTA. THIS STORM IS MOVING NORTHEAST AT 10 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.
 
IF YOU EXPERIENCE STORM DAMAGE TO STRUCTURES OR TREES...OR HAIL THE
SIZE OF DIMES OR LARGER...PLEASE REPORT IT TO THE NATIONA~L WEATHER
SERVICE BY CALLING 770-486-8535.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 10, 3:26 PM EDTSevere Thunderstorm WarningFFCLaurens34 min
Sep 10, 4:09 PM EDTSevere Thunderstorm WarningFFCBartow36 min
Sep 10, 4:26 PM EDTSevere Thunderstorm WarningFFCTroup34 min
Sep 10, 4:57 PM EDTSevere Thunderstorm WarningFFCHarris, Troup48 min
Sep 10, 5:02 PM EDTSevere Thunderstorm WarningFFCBartow28 min
Sep 10, 5:13 PM EDTSevere Thunderstorm WarningFFCCoweta, Fulton47 min
Sep 10, 5:18 PM EDTSevere Thunderstorm WarningFFCUpson27 min
Sep 10, 5:25 PM EDTSevere Thunderstorm WarningFFCBartow, Cobb, Paulding50 min
Sep 10, 5:34 PM EDTSevere Thunderstorm WarningFFCMeriwether26 min
Sep 10, 5:43 PM EDTSevere Thunderstorm WarningFFCUpson32 min
Sep 10, 5:56 PM EDTSevere Thunderstorm WarningFFCCherokee34 min
Sep 10, 6:02 PM EDTSevere Thunderstorm WarningFFCDeKalb, Fulton, Gwinnett43 min
Sep 10, 6:05 PM EDTSevere Thunderstorm WarningFFCJackson25 min
Sep 10, 6:17 PM EDTSevere Thunderstorm WarningFFCCobb28 min
Sep 10, 6:32 PM EDTSevere Thunderstorm WarningFFCTaylor28 min
Sep 10, 6:36 PM EDTSevere Thunderstorm WarningFFCChattooga, Floyd39 min
Sep 10, 6:43 PM EDTSevere Thunderstorm WarningFFCCrawford32 min
Sep 10, 6:47 PM EDTSevere Thunderstorm WarningFFCJackson, Madison43 min
Sep 10, 6:49 PM EDTSevere Thunderstorm WarningFFCPaulding26 min
Sep 10, 7:06 PM EDTSevere Thunderstorm WarningFFCBarrow39 min
Sep 10, 7:20 PM EDTSevere Thunderstorm WarningFFCDouglas25 min
Sep 10, 7:49 PM EDTSevere Thunderstorm WarningFFCDouglas26 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1997Every severe thunderstorm warning in 1997

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; radar from the NEXRAD Level II archive.