Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 13, NWS Atlanta, GA

February 28, 20114 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Feb 28, 2011, 3:42 PM EST for 4 counties in Georgia. It was in force for 48 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: Feb 28, 2011, 3:42 PM EST (20:42 UTC)
Expired: Feb 28, 2011, 4:30 PM EST
In force: 48 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Bartow County, GA, Chattooga County, GA, Floyd County, GA, Gordon County, GA

The radar

The Northeast Alabama radar (KHTX), 107 km from the middle of the area, began a volume at 20:41 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
Feb 28, 4:00 PM EST	TSTM WND DMG	Adairsville, GA	BARTOW COUNTY EMA RELAYED A REPORT OF MANY TREES DOWN IN ADAIRSVILLE.

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
Feb 28, 1:29 PM EST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.7 hours before the alert went out and 129 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: 1162 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 229 m²/s²
0-3 km storm-relative helicity: 350 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.

670 
WUUS52 KFFC 282042
SVRFFC
GAC015-055-115-129-282130-
/O.NEW.KFFC.SV.W.0013.110228T2042Z-110228T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
342 PM EST MON FEB 28 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BARTOW COUNTY IN NORTHWEST GEORGIA
  CHATTOOGA COUNTY IN NORTHWEST GEORGIA
  NORTHERN FLOYD COUNTY IN NORTHWEST GEORGIA
  GORDON COUNTY IN NORTHWEST GEORGIA

* UNTIL 430 PM EST

* AT 337 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZED
  HAIL...AND DAMAGING WINDS UP TO 60 MPH. THESE STORMS WERE LOCATED   
  ALONG A LINE EXTENDING FROM AROUND EVERETT SPRINGS TO SOUTHEAST OF 
  SUMMERVILLE TO CHATTOOGAVILLE...MOVING EAST AT 55 MPH.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. 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.

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.

&&

LAT...LON 3434 8547 3446 8538 3459 8524 3460 8506
      3457 8465 3444 8465 3435 8470 3423 8493
      3421 8545
TIME...MOT...LOC 2040Z 275DEG 41KT 3452 8515 3441 8525
          3432 8536

$$

2 follow-up statements

137 
WWUS52 KFFC 282109
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
409 PM EST MON FEB 28 2011

GAC015-055-115-129-282130-
/O.CON.KFFC.SV.W.0013.000000T0000Z-110228T2130Z/
BARTOW GA-FLOYD GA-CHATTOOGA GA-GORDON GA-
409 PM EST MON FEB 28 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EST 
FOR GORDON...SOUTH CENTRAL CHATTOOGA...NORTHERN AND CENTRAL FLOYD... 
AND NORTHERN BARTOW COUNTIES...

AT 402 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZED HAIL...AND DAMAGING WINDS UP TO 60 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM REDBUD TO ADAIRSVILLE TO
SHANNON...MOVING EAST AT 45 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
KINGSTON...FOLSOM...OAKMAN...RANGER...FAIRMOUNT...FUNKHOUSER AND PINE
LOG.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO 
GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. MOVE INDOORS 
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. 
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE 
STRUCK BY LIGHTNING.

THESE STORMS BLEW DOWN AT LEAST A DOZEN TREES AND PRODUCED 
QUARTER-SIZED HAIL AS THEY MOVED THROUGH CHATTOOGA COUNTY. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EST MONDAY EVENING FOR
NORTHERN GEORGIA.

&&

LAT...LON 3444 8465 3435 8470 3423 8493 3421 8545
      3437 8531 3456 8493 3458 8484 3457 8465
TIME...MOT...LOC 2107Z 275DEG 41KT 3449 8478 3438 8488
          3429 8499

$$



19

947 
WWUS52 KFFC 282114
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
414 PM EST MON FEB 28 2011

GAC055-282122-
/O.CAN.KFFC.SV.W.0013.000000T0000Z-110228T2130Z/
CHATTOOGA GA-
414 PM EST MON FEB 28 2011

...THE SEVERE THUNDERSTORM WARNING FOR CHATTOOGA COUNTY HAS BEEN 
CANCELLED...

THE STORMS THAT PROMPTED THE WARNING FOR CHATTOOGA COUNTY EARLIER 
HAVE MOVED SOUTHEAST INTO FLOYD COUNTY.

IF YOU SAW 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EST MONDAY EVENING FOR
NORTHERN GEORGIA.

LAT...LON 3444 8466 3435 8470 3423 8493 3421 8545
      3436 8530 3456 8493 3458 8484 3457 8465
TIME...MOT...LOC 2112Z 275DEG 41KT 3448 8471 3437 8481
          3428 8492

$$

GAC015-115-129-282130-
/O.CON.KFFC.SV.W.0013.000000T0000Z-110228T2130Z/
BARTOW GA-FLOYD GA-GORDON GA-
414 PM EST MON FEB 28 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EST
FOR GORDON...NORTHERN FLOYD AND NORTHERN BARTOW COUNTIES...

AT 407 PM EST...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING QUARTER SIZED HAIL...AND DAMAGING WINDS UP TO 60 MPH.
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM SONORAVILLE TO
FOLSOM TO KINGSTON...MOVING EAST AT 45 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
FAIRMOUNT...FUNKHOUSER AND PINE LOG.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO 
GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. MOVE INDOORS 
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. 
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE 
STRUCK BY LIGHTNING.

THESE STORMS BLEW DOWN AT LEAST A DOZEN TREES AND PRODUCED 
QUARTER-SIZED HAIL AS THEY MOVED THROUGH CHATTOOGA COUNTY. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EST MONDAY EVENING FOR
NORTHERN GEORGIA.

&&

LAT...LON 3444 8466 3435 8470 3423 8493 3421 8545
      3436 8530 3456 8493 3458 8484 3457 8465
TIME...MOT...LOC 2112Z 275DEG 41KT 3448 8471 3437 8481
          3428 8492

$$



19

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 28, 4:04 AM EST	Wind Advisory	FFC	Baldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 90 more	15 hr
Feb 28, 2:25 PM EST	Severe Thunderstorm Warning	FFC	Catoosa, Dade, Walker	50 min
Feb 28, 2:45 PM EST	Severe Thunderstorm Warning	FFC	Murray, Whitfield	45 min
Feb 28, 3:08 PM EST	Severe Thunderstorm Warning	FFC	Chattooga, Dade, Floyd, Walker	37 min
Feb 28, 3:13 PM EST	Severe Thunderstorm Warning	FFC	Fannin, Gilmer	32 min
Feb 28, 3:29 PM EST	Severe Thunderstorm Warning	FFC	Towns, Union	31 min
Feb 28, 3:50 PM EST	Severe Thunderstorm Warning	FFC	Bartow, Floyd, Polk	25 min
Feb 28, 4:09 PM EST	Severe Thunderstorm Warning	FFC	Bartow, Cherokee, Pickens	51 min
Feb 28, 4:17 PM EST	Severe Thunderstorm Warning	FFC	Bartow, Floyd	13 min
Feb 28, 4:32 PM EST	Tornado Warning	FFC	Bartow, Cherokee, Cobb, Paulding	28 min
Feb 28, 4:40 PM EST	Severe Thunderstorm Warning	FFC	Dawson, Forsyth, Hall	50 min
Feb 28, 4:56 PM EST	Tornado Warning	FFC	Cherokee, Cobb, Forsyth, Fulton	35 min
Feb 28, 5:04 PM EST	Severe Thunderstorm Warning	FFC	Carroll, Haralson, Paulding, Polk	41 min
Feb 28, 5:16 PM EST	Severe Thunderstorm Warning	FFC	Banks, Barrow, Clarke, Gwinnett, Hall, Jackson and 3 more	44 min
Feb 28, 5:49 PM EST	Severe Thunderstorm Warning	FFC	Carroll, Cobb, Douglas, Fulton, Paulding	41 min
Feb 28, 5:55 PM EST	Tornado Warning	FFC	Douglas, Fulton	35 min
Feb 28, 6:12 PM EST	Severe Thunderstorm Warning	FFC	Clayton, DeKalb, Henry, Newton, Rockdale	33 min
Feb 28, 6:36 PM EST	Severe Thunderstorm Warning	FFC	Meriwether, Troup	39 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.