Alert archive / Georgia / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 122, NWS Atlanta, GA

May 13, 2002DeKalb County, Gwinnett County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at May 13, 2002, 3:44 PM EDT for DeKalb County, Gwinnett County, Georgia. It was in force for 31 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: May 13, 2002, 3:44 PM EDT (19:44 UTC)
Expired: May 13, 2002, 4:15 PM EDT
In force: 31 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

Counties DeKalb County, GA, Gwinnett County, GA

The radar

The Atlanta radar (KFFC), 78 km from the middle of the area, began a volume at 19:47 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
May 13, 3:55 PM EDT	Hail 1	Decatur, GA	The public reported quarter size hail.
May 13, 4:00 PM EDT	Thunderstorm Wind	Snellville, GA	The Gwinnett county 911 center reported that numerous trees had been blown down.

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 watch it was issued in

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

Issued	Product	Office	Lasted
May 13, 1:00 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.7 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: 397 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 694 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 80 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KFFC 131944 CCA
SVRATL
GAC089-135-132015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTION
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
340 PM EDT MON MAY 13 2002

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DEKALB COUNTY IN NORTH CENTRAL GEORGIA
  GWINNETT COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 415 PM EDT

* AT 332 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS PRODUCING WINDS UP TO 65 MPH
  LOCATED FROM DUNWOODY TO 13 MILES SOUTHWEST OF GRESHAM PARK...
  MOVING EAST AT 20 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...AVONDALE
ESTATES...BELVEDERE PARK...BERKELEY LAKE...BUFORD...CANDLER-MCAFEE...
CHAMBLEE...CLARKSTON...DACULA...DECATUR...DORAVILLE...DRUID HILLS...
DULUTH...DUNWOODY...GRAYSON...GRESHAM PARK...LAWRENCEVILLE...
LILBURN...LITHONIA...MOUNTAIN PARK...NORCROSS...NORTH ATLANTA...NORTH
DECATUR...NORTH DRUID HILLS...PANTHERSVILLE...PINE LAKE...REDAN...
REST HAVEN...SCOTTDALE...SNELLVILLE...STONE MOUNTAIN...SUGAR HILL...
SUWANEE AND TUCKER.

WIDESPREAD WIND DAMAGE IS EXPECTED WITH THESE STORMS. WINDS MAY KNOCK
DOWN TREES AND POWER LINES. MOBILE HOMES AND VEHICLES ARE ESPECIALLY
SUSCEPTIBLE TO HIGH WINDS AND MAY BE OVERTURNED. TAKE COVER NOW

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 3417 8403 3409 8385 3399 8386 3393 8381
          3373 8407 3364 8411 3366 8433 3396 8433
          3395 8427 3400 8423 3405 8411

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 1:31 PM EDT	Severe Thunderstorm Warning	FFC	Dade, Walker	44 min
May 13, 3:04 PM EDT	Severe Thunderstorm Warning	FFC	Cherokee	26 min
May 13, 3:09 PM EDT	Severe Thunderstorm Warning	FFC	Fannin, Gilmer, Lumpkin, Towns, Union	36 min
May 13, 3:23 PM EDT	Severe Thunderstorm Warning	FFC	Fulton	22 min
May 13, 3:24 PM EDT	Severe Thunderstorm Warning	FFC	Dawson, Forsyth, Hall	36 min
May 13, 3:27 PM EDT	Severe Thunderstorm Warning	FFC	Cobb, Fulton	33 min
May 13, 3:37 PM EDT	Severe Thunderstorm Warning	FFC	DeKalb, Gwinnett	38 min
May 13, 3:41 PM EDT	Severe Thunderstorm Warning	FFC	Clayton, Fayette	34 min
May 13, 3:46 PM EDT	Severe Thunderstorm Warning	FFC	Heard	29 min
May 13, 3:54 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Barrow, Jackson	36 min
May 13, 3:59 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Barrow, Jackson	31 min
May 13, 4:20 PM EDT	Severe Thunderstorm Warning	FFC	Clarke, Madison, Oconee, Walton	40 min
May 13, 4:23 PM EDT	Severe Thunderstorm Warning	FFC	Clarke, Madison, Oconee, Walton	37 min
May 13, 4:39 PM EDT	Severe Thunderstorm Warning	FFC	Oglethorpe	36 min
May 13, 5:17 PM EDT	Severe Thunderstorm Warning	FFC	Oglethorpe, Wilkes	28 min
May 13, 5:46 PM EDT	Severe Thunderstorm Warning	FFC	Greene, Taliaferro	29 min
May 13, 5:56 PM EDT	Severe Thunderstorm Warning	FFC	Taylor	34 min
May 13, 6:10 PM EDT	Severe Thunderstorm Warning	FFC	Macon	35 min
May 13, 6:21 PM EDT	Severe Thunderstorm Warning	FFC	Taliaferro, Warren	24 min
May 13, 6:31 PM EDT	Severe Thunderstorm Warning	FFC	Macon	29 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.