Alert archive / Georgia / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 207, NWS Atlanta, GA

August 28, 2004Cobb County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Aug 28, 2004, 10:40 PM EDT for Cobb County, Georgia. It was in force for 35 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 28, 2004, 10:40 PM EDT (02:40 UTC)
Expired: Aug 28, 2004, 11:15 PM EDT
In force: 35 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

County Cobb County, GA

The radar

The Atlanta radar (KFFC), 59 km from the middle of the area, began a volume at 02:39 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 00:00Z, 2.7 hours before the alert went out and 59 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: 1094 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1650 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: 4 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 
WUUS52 KFFC 290240
SVRATL
GAC067-290315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1039 PM EDT SAT AUG 28 2004

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

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

* UNTIL 1115 PM EDT

* AT 1033 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM MABLETON TO POWDER SPRINGS...
  MOVING NORTH AT 5 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...AUSTELL...
KENNESAW...MABLETON...MARIETTA...POWDER SPRINGS AND WHITEWATER.

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

EXCESSIVE LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IF
POSSIBLE. STAY AWAY FROM WINDOWS AND DOORS. AVOID USING TELEPHONES OR
ELECTRICAL APPLIANCES.

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 3381 8450 3380 8472 3403 8473 3404 8446

$$

RAB

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 28, 10:25 PM EDT	Severe Thunderstorm Warning	FFC	Douglas	35 min
Aug 29, 2:38 PM EDT	Severe Thunderstorm Warning	FFC	Meriwether, Troup	37 min
Aug 29, 4:02 PM EDT	Severe Thunderstorm Warning	FFC	Crawford, Taylor	43 min
Aug 29, 4:09 PM EDT	Severe Thunderstorm Warning	FFC	Coweta, Fulton	36 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2004 Every severe thunderstorm warning in 2004

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.