Alert archive / Georgia / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 416, NWS Atlanta, GA

August 4, 2003Cherokee County, Cobb County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Aug 4, 2003, 9:32 PM EDT for Cherokee County, Cobb County, Georgia. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 4, 2003, 9:32 PM EDT (01:32 UTC)
Expired: Aug 4, 2003, 10:00 PM EDT
In force: 28 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

Counties Cherokee County, GA, Cobb County, GA

The radar

The Atlanta radar (KFFC), 80 km from the middle of the area, began a volume at 01:34 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 4, 7:10 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 1.5 hours before the alert went out and 79 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2177 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 868 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 3.7

Open this sounding in Storm Lab

The text

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

959 
WUUS52 KFFC 050132
SVRATL
GAC057-067-050200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
928 PM EDT MON AUG 4 2003

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN CHEROKEE COUNTY IN NORTH CENTRAL GEORGIA
  NORTHEASTERN COBB COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 1000 PM EDT

* AT 926 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES NORTHEAST OF ACWORTH...MOVING SOUTHEAST
  AT 20 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...ACWORTH...
HOLLY SPRINGS...KENNESAW...MARIETTA AND WOODSTOCK.

HAIL TO THE SIZE OF QUARTERS AND WIND GUSTS TO 60 MPH CAN BE 
EXPECTED IN THE WARNED AREA.

IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.

LAT...LON 3424 8453 3408 8472 3389 8450 3397 8437

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 8:36 PM EDT	Severe Thunderstorm Warning	FFC	Bartow	24 min
Aug 4, 9:01 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Cherokee	29 min
Aug 4, 9:13 PM EDT	Severe Thunderstorm Warning	FFC	Banks	32 min
Aug 4, 9:39 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Hall, Jackson	36 min
Aug 4, 10:18 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Hall, Jackson, Madison	42 min
Aug 4, 10:39 PM EDT	Flash Flood Warning	FFC	Banks	2 hr

Nearby

Severe Thunderstorm Warnings in Georgia, 2003 Every severe thunderstorm warning in 2003

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.