Alert archive / Georgia / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 192, NWS Atlanta, GA

April 23, 20097 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 23, 2009, 7:01 PM EDT for 7 counties in Georgia. It was in force for 44 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: Apr 23, 2009, 7:01 PM EDT (23:01 UTC)
Expired: Apr 23, 2009, 7:45 PM EDT
In force: 44 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Bartow County, GA, Chattooga County, GA, Floyd County, GA, Gordon County, GA, Murray County, GA, Walker County, GA, Whitfield County, GA

The radar

The Northeast Alabama radar (KHTX), 110 km from the middle of the area, began a volume at 23:04 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
Apr 23, 7:10 PM EDT	HAIL 0.75	Calhoun, GA
Apr 23, 7:40 PM EDT	HAIL 0.75	Calhoun, GA

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.0 hours before the alert went out and 139 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: 178 J/kg
Mixed-layer CIN: -153 J/kg
Mixed-layer LCL: 1135 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 218 m²/s²
0-3 km storm-relative helicity: 184 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KFFC 232301
SVRFFC
GAC015-055-115-129-213-295-313-232345-
/O.NEW.KFFC.SV.W.0192.090423T2301Z-090423T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
701 PM EDT THU APR 23 2009

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN BARTOW COUNTY IN NORTHWEST GEORGIA
  NORTHEASTERN CHATTOOGA COUNTY IN NORTHWEST GEORGIA
  NORTHEASTERN FLOYD COUNTY IN NORTHWEST GEORGIA
  WESTERN GORDON COUNTY IN NORTHWEST GEORGIA
  SOUTHWESTERN MURRAY COUNTY IN NORTHWEST GEORGIA
  SOUTHEASTERN WALKER COUNTY IN NORTHWEST GEORGIA
  SOUTH CENTRAL WHITFIELD COUNTY IN NORTHWEST GEORGIA

* UNTIL 745 PM EDT

* AT 659 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED HAIL...AND
  DAMAGING WINDS UP TO 60 MPH.  THIS STORM WAS LOCATED 11 MILES WEST
  OF RESACA...MOVING SOUTHEAST AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ADAIRSVILLE...PLAINVILLE AND CALHOUN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

QUARTER TO GOLF BALL SIZED HAIL WAS REPORTED WITH THIS STORM AS IT 
MOVED ACROSS WALKER COUNTY. IF YOU ARE IN THE PATH OF THE 
STORM...TAKE IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY.

IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL 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 3462 8475 3431 8494 3454 8528 3471 8513
TIME...MOT...LOC 2301Z 298DEG 12KT 3460 8512

$$

1 follow-up statement

000 
WWUS52 KFFC 232333
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
733 PM EDT THU APR 23 2009

GAC055-115-213-295-313-232343-
/O.CAN.KFFC.SV.W.0192.000000T0000Z-090423T2345Z/
FLOYD GA-CHATTOOGA GA-WALKER GA-WHITFIELD GA-MURRAY GA-
733 PM EDT THU APR 23 2009

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MURRAY...SOUTH
CENTRAL WHITFIELD...SOUTHEASTERN WALKER...NORTHEASTERN CHATTOOGA AND
NORTHEASTERN FLOYD COUNTIES IS CANCELLED...

THE STORM THAT PROMPTED THE WARNING HAS MOVED OUT OF THE 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 3449 8508 3460 8499 3456 8479 3443 8487
      3437 8490
TIME...MOT...LOC 2333Z 298DEG 12KT 3451 8497

$$

GAC015-129-232345-
/O.CON.KFFC.SV.W.0192.000000T0000Z-090423T2345Z/
BARTOW GA-GORDON GA-
733 PM EDT THU APR 23 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR WESTERN GORDON AND EXTREME NORTH CENTRAL BARTOW COUNTIES...

AT 733 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZED
HAIL...AND DAMAGING WINDS UP TO 60 MPH. THIS STORM WAS LOCATED NEAR
CALHOUN...MOVING SOUTHEAST AT 15 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO REDBUD
AND AUDUBON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3449 8508 3460 8499 3456 8479 3443 8487
      3437 8490
TIME...MOT...LOC 2333Z 298DEG 12KT 3451 8497

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 23, 6:36 AM EDT	Severe Thunderstorm Warning	FFC	Dodge	24 min
Apr 23, 5:49 PM EDT	Severe Thunderstorm Warning	FFC	Catoosa, Chattooga, Walker, Whitfield	41 min
Apr 23, 6:05 PM EDT	Severe Thunderstorm Warning	FFC	Cobb, Douglas, Paulding	40 min
Apr 23, 6:11 PM EDT	Severe Thunderstorm Warning	FFC	Gordon, Murray, Walker, Whitfield	49 min
Apr 23, 6:29 PM EDT	Severe Thunderstorm Warning	FFC	Catoosa, Gordon, Walker, Whitfield	46 min
Apr 23, 6:37 PM EDT	Severe Thunderstorm Warning	FFC	Cobb, Douglas, Fulton, Paulding	38 min
Apr 23, 6:53 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Cherokee, Gordon, Pickens	52 min
Apr 23, 6:57 PM EDT	Severe Thunderstorm Warning	FFC	Cobb, Fulton, Paulding	48 min
Apr 23, 7:10 PM EDT	Severe Thunderstorm Warning	FFC	Cobb, Douglas, Fulton	35 min
Apr 23, 7:21 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Hall, White	39 min
Apr 23, 7:25 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Cobb, Paulding	50 min
Apr 23, 7:32 PM EDT	Severe Thunderstorm Warning	FFC	Clayton, DeKalb, Fulton	58 min
Apr 23, 7:39 PM EDT	Severe Thunderstorm Warning	FFC	Clayton, Fayette, Fulton	66 min
Apr 23, 7:42 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Cherokee, Gordon	63 min
Apr 23, 7:45 PM EDT	Severe Thunderstorm Warning	FFC	Cobb, Douglas, Fulton	45 min
Apr 23, 7:52 PM EDT	Severe Thunderstorm Warning	FFC	DeKalb, Gwinnett, Rockdale, Walton	68 min
Apr 23, 7:55 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Jackson, Madison	33 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2009 Every severe thunderstorm warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.