Alert archive / Georgia / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 79, NWS Atlanta, GA

April 11, 20134 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 11, 2013, 6:16 PM EDT for 4 counties in Georgia. It was in force for 44 min. 6 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 11, 2013, 6:16 PM EDT (22:16 UTC)
Expired: Apr 11, 2013, 7:00 PM EDT
In force: 44 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Carroll County, GA, Haralson County, GA, Paulding County, GA, Polk County, GA

The radar

The Atlanta radar (KFFC), 76 km from the middle of the area, began a volume at 22:16 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 11, 6:26 PM EDT	HAIL 1.75	1 N Tallapoosa, GA	PUBLIC REPORTED GOLF BALL SIZED HAIL ON HWY 100 NORTH OF TALLAPOOSA.
Apr 11, 6:31 PM EDT	TORNADO 0	3 Ese Tallapoosa, GA	A NWS SURVEY CONFIRMS THAT A HIGH END EF0 TORNADO TOUCHED DOWN JUST SOUTH OF I20 NEAR CHANDLER RD...CONTINUED NE CROSSING KING GIN RD AND ALONG THOMAS RD. THREE HOMES SUSTAINED DAMAGE. THE TORNADO CROSSED I20 AND CONTINUED ACROSS DR KING RD AND PETTY RD...LEAV
Apr 11, 6:50 PM EDT	HAIL 2.75	5 Ssw Rockmart, GA	AN AMATEUR RADIO OPERATOR REPORTED BASEBALL SIZED HAIL IN THIS AREA.
Apr 11, 6:58 PM EDT	HAIL 2.75	Rockmart, GA	BASEBALL SIZED HAIL REPORTED AT A GAS STATION IN ROCKMART.
Apr 11, 6:59 PM EDT	HAIL 1	4 S Rockmart, GA	HAM RADIO OPERATOR REPORTED QUARTER SIZED HAIL 4 MILES SOUTH OF ROCKMART.
Apr 11, 7:01 PM EDT	TORNADO	2 W Braswell, GA	A BRIEF EF1 TORNADO TOUCHED DOWN SOUTH OF ROCKMART. THE PATH WAS APPROXIMATELY 3 TENTHS OF A MILE LONG. ABOUT 50 TREES WERE SNAPPED AND ANOTHER 25 OR SO WERE UPROOTED. THE TORNADO WAS 25 YARDS AT ITS WIDEST POINT. THE TORNADO WAS ON THE GROUND FOR AROUND ONE M

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 11, 4:45 PM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.3 hours before the alert went out and 80 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1029 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

770 
WUUS52 KFFC 112216
SVRFFC
GAC045-143-223-233-112300-
/O.NEW.KFFC.SV.W.0079.130411T2216Z-130411T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
616 PM EDT THU APR 11 2013

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CARROLL COUNTY IN NORTHWEST GEORGIA
  HARALSON COUNTY IN NORTHWEST GEORGIA
  SOUTHERN PAULDING COUNTY IN NORTHWEST GEORGIA
  EASTERN POLK COUNTY IN NORTHWEST GEORGIA

* UNTIL 700 PM EDT

* AT 612 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 9 MILES
  SOUTHWEST OF TALLAPOOSA...MOVING NORTHEAST AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  WACO...BREMEN...BUCHANAN...ROCKMART...ARAGON...BRASWELL...HIRAM AND
  DALLAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED ROTATION WITHIN THIS STORM. ALTHOUGH
CURRENT DATA DOES NOT INDICATE THE EXISTENCE OF A TORNADO...A TORNADO
MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO
A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR
SMALL INTERIOR ROOM.

IF YOU SEE WIND DAMAGE...HAIL OR 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. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT THURSDAY EVENING
FOR NORTHWESTERN GEORGIA.

&&

LAT...LON 3408 8509 3387 8475 3361 8533 3361 8534
      3377 8537
TIME...MOT...LOC 2216Z 224DEG 37KT 3368 8536

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 11, 4:46 PM EDT	Special Weather Statement	FFC	Johnson	29 min
Apr 11, 5:19 PM EDT	Special Weather Statement	FFC	Jefferson	26 min
Apr 11, 6:21 PM EDT	Tornado Warning	FFC	Carroll, Haralson, Paulding	24 min
Apr 11, 6:44 PM EDT	Tornado Warning	FFC	Bartow, Haralson, Paulding, Polk	46 min
Apr 11, 7:03 PM EDT	Special Weather Statement	FFC	Gordon, Murray, Whitfield	42 min
Apr 11, 7:19 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Cherokee, Pickens	41 min
Apr 11, 7:27 PM EDT	Severe Thunderstorm Warning	FFC	Gilmer, Gordon, Murray, Whitfield	48 min
Apr 11, 7:33 PM EDT	Tornado Warning	FFC	Bartow, Cherokee, Pickens	42 min
Apr 11, 7:43 PM EDT	Severe Thunderstorm Warning	FFC	Fannin, Murray, Whitfield	32 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2013 Every severe thunderstorm warning in 2013

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.