Alert archive / Georgia / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 302, NWS Atlanta, GA

July 23, 2002Cobb County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 23, 2002, 6:46 PM EDT for Cobb County, Georgia. It was in force for 29 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: Jul 23, 2002, 6:46 PM EDT (22:46 UTC)
Expired: Jul 23, 2002, 7:15 PM EDT
In force: 29 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

County Cobb County, GA

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.8 hours before the alert went out and 60 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: 1244 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 586 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 66 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.

677 
WUUS52 KFFC 232246
SVRATL
GAC067-232315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
645 PM EDT TUE JUL 23 2002

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

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

* UNTIL 715 PM EDT

* AT 642 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER MARIETTA. THE SEVERE THUNDERSTORM WAS 
  NEARLY STATIONARY.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...AUSTELL...
  FAIR OAKS...KENNESAW...MABLETON...MARIETTA...POWDER SPRINGS...SMYRNA
  AND VININGS.

HAIL TO THE SIZE OF QUARTERS AND WIND GUSTS TO 65 MPH CAN BE EXPECTED 
IN THE WARNED AREA.

THIS STORM CONTAINS VERY HEAVY RAIN. EXPECT 1 TO 2 INCHES OF RAIN IN
LESS THAN AN HOUR. THIS CAN CAUSE BRIEF FLOODING OF ROADS.

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 3401 8472 3406 8454 3386 8445 3375 8458
          3381 8462 3381 8470

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 8:06 PM EDT	Severe Thunderstorm Warning	FFC	Clayton, Fayette	24 min
Jul 22, 8:31 PM EDT	Severe Thunderstorm Warning	FFC	Cobb, Paulding	29 min
Jul 23, 3:47 PM EDT	Severe Thunderstorm Warning	FFC	Towns	28 min
Jul 23, 4:09 PM EDT	Severe Thunderstorm Warning	FFC	Houston, Peach	36 min
Jul 23, 5:49 PM EDT	Severe Thunderstorm Warning	FFC	Fulton, Gwinnett	26 min
Jul 23, 5:55 PM EDT	Severe Thunderstorm Warning	FFC	Fayette	35 min
Jul 23, 6:04 PM EDT	Severe Thunderstorm Warning	FFC	Cobb, Fulton	26 min
Jul 23, 6:07 PM EDT	Severe Thunderstorm Warning	FFC	Bartow	23 min
Jul 23, 6:22 PM EDT	Severe Thunderstorm Warning	FFC	Gwinnett	23 min
Jul 23, 6:25 PM EDT	Severe Thunderstorm Warning	FFC	Chattahoochee, Muscogee	35 min
Jul 23, 7:09 PM EDT	Severe Thunderstorm Warning	FFC	Spalding	21 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2002 Every severe thunderstorm warning in 2002

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.