Alert archive / Georgia / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 296, NWS Atlanta, GA

July 23, 2002Fulton County, Gwinnett County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 23, 2002, 5:49 PM EDT for Fulton County, Gwinnett County, Georgia. It was in force for 26 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 23, 2002, 5:49 PM EDT (21:49 UTC)
Expired: Jul 23, 2002, 6:15 PM EDT
In force: 26 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

Counties Fulton County, GA, Gwinnett County, GA

The radar

The Atlanta radar (KFFC), 78 km from the middle of the area, began a volume at 21:51 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.

What was reported inside it

Time	Report	Where	Remark
Jul 23, 5:54 PM EDT	Hail 1	Alpharetta, GA	The public reported quarter size hail.
Jul 23, 6:10 PM EDT	Hail 0.75	Norcross, GA	The public reported dime size hail.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.8 hours before the alert went out and 75 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.

775 
WUUS52 KFFC 232149
SVRATL
GAC121-135-232215-

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

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN FULTON COUNTY IN NORTH CENTRAL GEORGIA
  WESTERN GWINNETT COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 615 PM EDT

* AT 543 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A SEVERE THUNDERSTORM BETWEEN ALPHARETTA NORCROSS...MOVING SOUTH   
  AT 5 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...DULUTH...    
  LILBURN...BERKELY LAKE AND NORCROSS.

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 3409 8419 3390 8406 3386 8417 3403 8437

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, 5:55 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, 6:46 PM EDT	Severe Thunderstorm Warning	FFC	Cobb	29 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.