Alert archive / Georgia / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 344, NWS Atlanta, GA

July 13, 2003Forsyth County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 13, 2003, 9:24 PM EDT for Forsyth County, Georgia. It was in force for 36 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 13, 2003, 9:24 PM EDT (01:24 UTC)
Expired: Jul 13, 2003, 10:00 PM EDT
In force: 36 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

County Forsyth County, GA

The radar

The Atlanta radar (KFFC), 95 km from the middle of the area, began a volume at 01:26 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, 1.4 hours before the alert went out and 92 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: 323 J/kg
Mixed-layer CIN: -127 J/kg
Mixed-layer LCL: 1615 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

081 
WUUS52 KFFC 140124
SVRATL
GAC117-140200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
924 PM EDT SUN JUL 13 2003

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN FORSYTH COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 1000 PM EDT

* AT 923 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES SOUTHWEST OF CUMMING...MOVING SOUTHEAST
  AT 20 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...CUMMING.

HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED 
IN THE WARNED AREA.  THIS STORM BLEW SEVERAL TREES DOWN 6 MILES 
SOUTHEAST OF CANTON AT 915 PM.

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 3427 8425 3408 8428 3401 8419 3418 8402

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 8:24 PM EDT	Severe Thunderstorm Warning	FFC	Hall	36 min
Jul 13, 9:03 PM EDT	Severe Thunderstorm Warning	FFC	Cherokee, Fulton	27 min
Jul 13, 9:08 PM EDT	Flash Flood Warning	FFC	Cherokee	67 min
Jul 13, 9:18 PM EDT	Flash Flood Warning	FFC	Greene, Taliaferro, Warren	87 min
Jul 13, 9:37 PM EDT	Severe Thunderstorm Warning	FFC	Gwinnett	38 min
Jul 13, 9:41 PM EDT	Flash Flood Warning	FFC	Barrow, Forsyth, Gwinnett, Hall, Jackson	94 min
Jul 13, 10:47 PM EDT	Flash Flood Warning	FFC	Warren	118 min

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.