Alert archive / Georgia / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 409, NWS Atlanta, GA

August 4, 2003Catoosa County, Whitfield County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Aug 4, 2003, 3:47 PM EDT for Catoosa County, Whitfield County, Georgia. It was in force for 28 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 4, 2003, 3:47 PM EDT (19:47 UTC)
Expired: Aug 4, 2003, 4:15 PM EDT
In force: 28 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

Counties Catoosa County, GA, Whitfield County, GA

The radar

The Northeast Alabama radar (KHTX), 95 km from the middle of the area, began a volume at 19:51 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.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.8 hours before the alert went out and 180 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: 412 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 774 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 45 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

641 
WUUS52 KFFC 041947
SVRATL
GAC047-313-042015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
347 PM EDT MON AUG 4 2003

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN CATOOSA COUNTY IN NORTHWEST GEORGIA
  NORTHERN WHITFIELD COUNTY IN NORTHWEST GEORGIA

* UNTIL 415 PM EDT

* AT 342 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER RINGGOLD...MOVING EAST AT 35 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...COHUTTA...
INDIAN SPRINGS...RINGGOLD...TUNNEL HILL AND VARNELL.

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

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 3498 8520 3480 8513 3487 8483 3500 8487

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 9:22 PM EDT	Flash Flood Warning	FFC	Polk	83 min
Aug 3, 9:27 PM EDT	Flash Flood Warning	FFC	Toombs	93 min
Aug 4, 6:03 PM EDT	Severe Thunderstorm Warning	FFC	Walker	27 min
Aug 4, 6:32 PM EDT	Severe Thunderstorm Warning	FFC	Walker	28 min
Aug 4, 7:30 PM EDT	Severe Thunderstorm Warning	FFC	Gordon	30 min
Aug 4, 7:54 PM EDT	Flash Flood Warning	FFC	Walker	2 hr

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.