Alert archive / Georgia / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 39, NWS Atlanta, GA

February 21, 2005DeKalb County, Gwinnett County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Feb 21, 2005, 7:43 PM EST for DeKalb County, Gwinnett County, Georgia. It was in force for 32 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: Feb 21, 2005, 7:43 PM EST (00:43 UTC)
Expired: Feb 21, 2005, 8:15 PM EST
In force: 32 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), 64 km from the middle of the area, began a volume at 00:46 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 watch it was issued in

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

Issued	Product	Office	Lasted
Feb 21, 7:05 PM EST	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 0.7 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: 904 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1003 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 165 m²/s²
0-3 km storm-relative helicity: 233 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 9.9

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KFFC 220043
SVRFFC
GAC089-135-220115-
/O.NEW.KFFC.SV.W.0039.050222T0043Z-050222T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
743 PM EST MON FEB 21 2005

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 815 PM EST

* AT 741 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR TUCKER...AND MOVING SOUTHEAST AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO STONE
  MOUNTAIN...LILBURN AND CLARKSTON.

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 3392 8423 3379 8432 3372 8408 3381 8395

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 21, 7:17 PM EST	Severe Thunderstorm Warning	FFC	Bartow	28 min
Feb 21, 7:19 PM EST	Severe Thunderstorm Warning	FFC	Clarke, Oconee	41 min
Feb 21, 7:30 PM EST	Severe Thunderstorm Warning	FFC	Walton	45 min
Feb 21, 7:31 PM EST	Severe Thunderstorm Warning	FFC	Jefferson, Washington	44 min
Feb 21, 7:36 PM EST	Severe Thunderstorm Warning	FFC	Cherokee	24 min
Feb 21, 7:52 PM EST	Severe Thunderstorm Warning	FFC	Morgan	38 min
Feb 21, 7:55 PM EST	Severe Thunderstorm Warning	FFC	Greene, Oglethorpe	50 min
Feb 21, 8:01 PM EST	Severe Thunderstorm Warning	FFC	Rockdale	29 min
Feb 21, 8:15 PM EST	Severe Thunderstorm Warning	FFC	Walton	30 min
Feb 21, 8:23 PM EST	Severe Thunderstorm Warning	FFC	Cobb	37 min
Feb 21, 8:23 PM EST	Severe Thunderstorm Warning	FFC	Taliaferro, Wilkes	37 min
Feb 21, 8:30 PM EST	Severe Thunderstorm Warning	FFC	Fulton	30 min
Feb 21, 8:35 PM EST	Severe Thunderstorm Warning	FFC	Morgan, Newton	40 min
Feb 21, 8:43 PM EST	Severe Thunderstorm Warning	FFC	DeKalb	32 min
Feb 21, 8:52 PM EST	Severe Thunderstorm Warning	FFC	Warren	23 min
Feb 21, 9:08 PM EST	Severe Thunderstorm Warning	FFC	Rockdale	37 min
Feb 21, 9:19 PM EST	Severe Thunderstorm Warning	FFC	Greene	26 min
Feb 21, 9:20 PM EST	Severe Thunderstorm Warning	FFC	Newton	25 min
Feb 21, 9:36 PM EST	Severe Thunderstorm Warning	FFC	Hancock	39 min
Feb 21, 9:45 PM EST	Severe Thunderstorm Warning	FFC	Washington	45 min
Feb 21, 9:49 PM EST	Severe Thunderstorm Warning	FFC	Jasper, Morgan	26 min
Feb 21, 10:02 PM EST	Severe Thunderstorm Warning	FFC	Jefferson	43 min
Feb 21, 10:06 PM EST	Severe Thunderstorm Warning	FFC	Putnam	39 min
Feb 21, 10:08 PM EST	Severe Thunderstorm Warning	FFC	Heard	37 min
Feb 21, 10:18 PM EST	Severe Thunderstorm Warning	FFC	Carroll	27 min
Feb 21, 10:34 PM EST	Severe Thunderstorm Warning	FFC	Coweta	26 min
Feb 21, 10:35 PM EST	Severe Thunderstorm Warning	FFC	Fayette	25 min
Feb 21, 10:44 PM EST	Severe Thunderstorm Warning	FFC	Troup	46 min
Feb 21, 10:57 PM EST	Severe Thunderstorm Warning	FFC	Haralson	18 min
Feb 21, 11:03 PM EST	Severe Thunderstorm Warning	FFC	Coweta, Fayette	42 min
Feb 21, 11:03 PM EST	Severe Thunderstorm Warning	FFC	Heard	27 min
Feb 21, 11:17 PM EST	Severe Thunderstorm Warning	FFC	Harris	43 min
Feb 21, 11:23 PM EST	Severe Thunderstorm Warning	FFC	Henry, Newton	52 min
Feb 21, 11:41 PM EST	Severe Thunderstorm Warning	FFC	Meriwether, Pike, Spalding	34 min
Feb 21, 11:46 PM EST	Severe Thunderstorm Warning	FFC	Talbot	44 min
Feb 21, 11:48 PM EST	Severe Thunderstorm Warning	FFC	Troup	27 min
Feb 22, 12:11 AM EST	Severe Thunderstorm Warning	FFC	Harris	34 min
Feb 22, 12:29 AM EST	Severe Thunderstorm Warning	FFC	Talbot	46 min
Feb 22, 1:10 AM EST	Severe Thunderstorm Warning	FFC	Taylor	50 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2005 Every severe thunderstorm warning in 2005

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.