Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 212, NWS Atlanta, GA

April 27, 20114 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 27, 2011, 9:41 PM EDT for 4 counties in Georgia. It was in force for 49 min. 1 report 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 27, 2011, 9:41 PM EDT (01:41 UTC)
Expired: Apr 27, 2011, 10:30 PM EDT
In force: 49 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), 61 km from the middle of the area, began a volume at 01:44 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 27, 10:20 PM EDT	TSTM WND DMG	4 Nnw Carrollton, GA	CARROLL COUNTY EMERGENCY MANAGEMENT REPORTS NUMEROUS DOWNED TREES BETWEEN BOWDON AND TO THE NORTH OF CARROLLTON.

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 27, 2:42 PM EDT	Tornado Watch PDS	SPC	8 hr
Apr 27, 6:52 PM EDT	Tornado Watch PDS	SPC	9 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 1.7 hours before the alert went out and 66 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: 1215 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1433 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 244 m²/s²
0-3 km storm-relative helicity: 408 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 15.2

Open this sounding in Storm Lab

The text

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

477 
WUUS52 KFFC 280141
SVRFFC
GAC045-143-223-233-280230-
/O.NEW.KFFC.SV.W.0212.110428T0141Z-110428T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
941 PM EDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CARROLL COUNTY IN NORTHWEST GEORGIA
  HARALSON COUNTY IN NORTHWEST GEORGIA
  SOUTHWESTERN PAULDING COUNTY IN NORTHWEST GEORGIA
  SOUTHEASTERN POLK COUNTY IN NORTHWEST GEORGIA

* UNTIL 1030 PM EDT

* AT 939 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZED HAIL...AND
  DAMAGING WINDS UP TO 60 MPH.  THIS LEADING EDGE OF THIS STORM WAS 
  LOCATED 10 MILES WEST OF BOWDON...MOVING NORTHEAST AT 60 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MOUNT
  ZION...TALLAPOOSA...CARROLLTON...WACO...BREMEN...BUCHANAN...TEMPLE
  AND VILLA RICA.

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...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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM EDT THURSDAY MORNING
FOR NORTHERN GEORGIA.

&&

LAT...LON 3395 8505 3399 8491 3378 8489 3378 8490
      3359 8491 3343 8520 3343 8522 3343 8530
      3379 8537
TIME...MOT...LOC 0141Z 231DEG 65KT 3355 8543

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 8:13 PM EDT	Tornado Warning	FFC	Chattooga, Floyd, Polk	62 min
Apr 27, 9:02 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Cherokee, Gordon, Murray	43 min
Apr 27, 9:07 PM EDT	Tornado Warning	FFC	Bartow, Cherokee, Dawson, Paulding, Pickens	38 min
Apr 27, 9:18 PM EDT	Tornado Warning	FFC	Dade	22 min
Apr 27, 9:26 PM EDT	Tornado Warning	FFC	Floyd, Haralson, Polk	49 min
Apr 27, 9:31 PM EDT	Tornado Warning	FFC	Bartow, Cherokee, Dawson, Gilmer, Gordon, Lumpkin and 1 more	59 min
Apr 27, 9:59 PM EDT	Tornado Warning	FFC	Fannin, Lumpkin, Towns, Union, White	61 min
Apr 27, 10:04 PM EDT	Tornado Warning	FFC	Bartow, Cherokee, Floyd, Polk	41 min
Apr 27, 10:08 PM EDT	Severe Thunderstorm Warning	FFC	Chattooga, Dade, Floyd, Walker	52 min
Apr 27, 10:09 PM EDT	Tornado Warning	FFC	Heard, Troup	66 min
Apr 27, 10:28 PM EDT	Severe Thunderstorm Warning	FFC	Carroll, Cobb, Douglas, Haralson, Paulding	21 min
Apr 27, 10:37 PM EDT	Tornado Warning	FFC	Bartow, Cherokee, Dawson, Gilmer, Gordon, Pickens	53 min
Apr 27, 10:43 PM EDT	Severe Thunderstorm Warning	FFC	Catoosa, Murray, Whitfield	47 min
Apr 27, 11:00 PM EDT	Severe Thunderstorm Warning	FFC	Coweta, Harris, Heard, Meriwether, Troup	45 min
Apr 27, 11:01 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Floyd, Gordon	44 min
Apr 27, 11:05 PM EDT	Tornado Warning	FFC	Harris, Meriwether, Troup	40 min
Apr 27, 11:08 PM EDT	Tornado Warning	FFC	Coweta, Fayette, Fulton, Heard	34 min
Apr 27, 11:15 PM EDT	Tornado Warning	FFC	Fannin, Lumpkin, Towns, Union	60 min
Apr 27, 11:29 PM EDT	Tornado Warning	FFC	Harris, Meriwether, Talbot, Troup	46 min
Apr 27, 11:35 PM EDT	Tornado Warning	FFC	Cherokee, Dawson, Gilmer, Pickens	40 min
Apr 27, 11:44 PM EDT	Severe Thunderstorm Warning	FFC	Clayton, Coweta, Fayette, Meriwether, Pike, Spalding	46 min
Apr 27, 11:52 PM EDT	Tornado Warning	FFC	Hall, Lumpkin, White	53 min
Apr 28, 12:02 AM EDT	Tornado Warning	FFC	Coweta, Fayette, Henry, Meriwether, Pike, Spalding	43 min
Apr 28, 12:06 AM EDT	Tornado Warning	FFC	Harris, Meriwether, Pike, Talbot, Upson	39 min
Apr 28, 12:38 AM EDT	Tornado Warning	FFC	Henry, Newton, Rockdale	52 min
Apr 28, 12:41 AM EDT	Tornado Warning	FFC	Butts, Lamar, Monroe, Pike, Upson	49 min
Apr 28, 1:06 AM EDT	Tornado Warning	FFC	Clarke, Greene, Morgan, Newton, Oconee, Walton	39 min
Apr 28, 1:08 AM EDT	Tornado Warning	FFC	Butts, Jasper, Monroe, Putnam	52 min
Apr 28, 1:38 AM EDT	Tornado Warning	FFC	Greene, Morgan, Putnam, Taliaferro, Warren	52 min
Apr 28, 1:48 AM EDT	Severe Thunderstorm Warning	FFC	Oglethorpe, Taliaferro, Wilkes	57 min
Apr 28, 2:03 AM EDT	Severe Thunderstorm Warning	FFC	Jasper, Jones, Lamar, Monroe, Putnam, Upson	57 min
Apr 28, 2:28 AM EDT	Tornado Warning	FFC	Jasper, Jones, Lamar, Monroe	47 min
Apr 28, 2:47 AM EDT	Severe Thunderstorm Warning	FFC	Greene, Hancock, Jones, Putnam, Taliaferro, Warren	43 min
Apr 28, 3:04 AM EDT	Tornado Warning	FFC	Hancock, Warren	41 min
Apr 28, 3:33 AM EDT	Severe Thunderstorm Warning	FFC	Hancock, Putnam	57 min
Apr 28, 3:37 AM EDT	Tornado Warning	FFC	Warren	38 min
Apr 28, 4:18 AM EDT	Tornado Warning	FFC	Jones	42 min
Apr 28, 4:24 AM EDT	Severe Thunderstorm Warning	FFC	Baldwin, Glascock, Hancock, Warren	51 min
Apr 28, 4:36 AM EDT	Flash Flood Warning	FFC	Baldwin, Hancock, Putnam, Taliaferro, Warren, Wilkes	4 hr
Apr 28, 4:59 AM EDT	Severe Thunderstorm Warning	FFC	Warren, Washington, Wilkinson	46 min
Apr 28, 5:41 AM EDT	Severe Thunderstorm Warning	FFC	Glascock, Jefferson	49 min
Apr 28, 10:12 AM EDT	Severe Thunderstorm Warning	FFC	Dooly, Pulaski, Wilcox	33 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2011 Every severe thunderstorm warning in 2011

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.