Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 105, NWS Atlanta, GA

April 4, 2011Dade County, Walker County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 4, 2011, 8:26 PM EDT for Dade County, Walker County, 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 4, 2011, 8:26 PM EDT (00:26 UTC)
Expired: Apr 4, 2011, 9:15 PM EDT
In force: 49 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Dade County, GA, Walker County, GA

The radar

The Northeast Alabama radar (KHTX), 73 km from the middle of the area, began a volume at 00:29 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 4, 8:55 PM EDT	TSTM WND DMG	Lafayette, GA	WALKER COUNTY 911 RELAYED REPORTS OF 5 DOWNED TREES AND 2 DOWNED POWERLINES. POWER OUTAGES HAVE BEEN REPORTED IN THE COUNTY.

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 4, 5:55 PM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 0.4 hours before the alert went out and 176 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: 176 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 1790 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 158 m²/s²
0-3 km storm-relative helicity: 251 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

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

409 
WUUS52 KFFC 050026
SVRFFC
GAC083-295-050115-
/O.NEW.KFFC.SV.W.0105.110405T0026Z-110405T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
826 PM EDT MON APR 4 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DADE COUNTY IN NORTHWEST GEORGIA
  WALKER COUNTY IN NORTHWEST GEORGIA

* UNTIL 915 PM EDT

* AT 820 PM EDT...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 16 MILES WEST OF TRENTON TO 12 MILES   
  SOUTHWEST OF TRENTON TO 23 MILES SOUTHWEST OF LAFAYETTE...OR FROM 
  JUST SOUTHEAST OF STEVENSON ALABAMA...TO IDEA ALABAMA...TO VALLEY 
  HEAD ALABAMA...MOVING NORTHEAST AT 60 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  CHICKAMAUGA...LOOKOUT MOUNTAIN AND ROSSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WEAK ROTATION IS INDICATED IN THIS CELL. 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 3499 8552 3499 8527 3486 8527 3485 8520
      3478 8520 3477 8515 3472 8516 3472 8505
      3467 8505 3458 8529 3459 8553 3496 8560
TIME...MOT...LOC 0024Z 247DEG 53KT 3483 8572 3475 8556
          3457 8557

$$

2 follow-up statements

598 
WWUS52 KFFC 050049
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
849 PM EDT MON APR 4 2011

GAC083-050058-
/O.CAN.KFFC.SV.W.0105.000000T0000Z-110405T0115Z/
DADE GA-
849 PM EDT MON APR 4 2011

...THE SEVERE THUNDERSTORM WARNING FOR DADE COUNTY IS CANCELLED...

THE STORM THAT PROMPTED THE WARNING HAS MOVED EAST OUT OF THE COUNTY.

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 MIDNIGHT EDT TUESDAY MORNING
FOR NORTHERN GEORGIA.

LAT...LON 3486 8527 3485 8521 3478 8520 3477 8515
      3472 8516 3472 8505 3467 8505 3458 8528
      3459 8553 3462 8554 3466 8550 3476 8545
      3487 8544 3499 8536 3499 8527
TIME...MOT...LOC 0048Z 247DEG 53KT 3490 8522 3479 8527
          3464 8537

$$

GAC295-050115-
/O.CON.KFFC.SV.W.0105.000000T0000Z-110405T0115Z/
WALKER GA-
849 PM EDT MON APR 4 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR WALKER COUNTY...

AT 844 PM EDT...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 CHICKAMAUGA TO COOPER HEIGHTS TO
CENTER POST...MOVING NORTHEAST AT 60 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ROCK
SPRING...NOBLE...LINWOOD...LAFAYETTE...SUTTLES MILL...NAOMI AND
VILLANOW.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT TUESDAY MORNING
FOR NORTHERN GEORGIA.

&&

LAT...LON 3486 8527 3485 8521 3478 8520 3477 8515
      3472 8516 3472 8505 3467 8505 3458 8528
      3459 8553 3462 8554 3466 8550 3476 8545
      3487 8544 3499 8536 3499 8527
TIME...MOT...LOC 0048Z 247DEG 53KT 3490 8522 3479 8527
          3464 8537

$$

043 
WWUS52 KFFC 050113
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
913 PM EDT MON APR 4 2011

GAC295-050122-
/O.EXP.KFFC.SV.W.0105.000000T0000Z-110405T0115Z/
WALKER GA-
913 PM EDT MON APR 4 2011

...THE SEVERE THUNDERSTORM WARNING FOR WALKER COUNTY WILL BE ALLOWED
TO EXPIRE AT 915 PM EDT...

THE STORM THAT PROMPTED THE WARNING HAS MOVED OUT OF THE 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 MIDNIGHT EDT TUESDAY MORNING
FOR NORTHERN GEORGIA.

LAT...LON 3486 8527 3485 8521 3478 8520 3477 8515
      3472 8516 3472 8505 3467 8505 3458 8528
      3459 8553 3462 8554 3466 8550 3476 8545
      3487 8544 3499 8536 3499 8527
TIME...MOT...LOC 0112Z 247DEG 53KT 3502 8481 3491 8487
          3477 8497

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 8:43 PM EDT	Severe Thunderstorm Warning	FFC	Chattooga, Floyd, Walker	62 min
Apr 4, 9:09 PM EDT	Severe Thunderstorm Warning	FFC	Gilmer, Gordon, Murray, Pickens, Whitfield	51 min
Apr 4, 9:15 PM EDT	Severe Thunderstorm Warning	FFC	Floyd, Polk	45 min
Apr 4, 9:17 PM EDT	Severe Thunderstorm Warning	FFC	Fannin, Gilmer, Murray, Whitfield	43 min
Apr 4, 9:27 PM EDT	Severe Thunderstorm Warning	FFC	Bartow	48 min
Apr 4, 9:45 PM EDT	Severe Thunderstorm Warning	FFC	Fannin, Towns, Union	45 min
Apr 4, 9:54 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Cherokee, Cobb, Paulding, Polk	51 min
Apr 4, 9:56 PM EDT	Severe Thunderstorm Warning	FFC	Dawson, Lumpkin, Pickens, White	49 min
Apr 4, 10:03 PM EDT	Severe Thunderstorm Warning	FFC	Haralson	42 min
Apr 4, 10:29 PM EDT	Severe Thunderstorm Warning	FFC	Carroll, Cobb, Douglas, Haralson, Paulding	46 min
Apr 4, 10:44 PM EDT	Severe Thunderstorm Warning	FFC	Dawson, Hall, Lumpkin, White	46 min
Apr 4, 10:52 PM EDT	Severe Thunderstorm Warning	FFC	Cherokee, Cobb, Forsyth, Fulton	53 min
Apr 4, 10:59 PM EDT	Severe Thunderstorm Warning	FFC	Coweta, Heard, Troup	31 min
Apr 4, 11:10 PM EDT	Severe Thunderstorm Warning	FFC	Clayton, Cobb, Fulton	65 min
Apr 4, 11:15 PM EDT	Severe Thunderstorm Warning	FFC	Carroll, Cobb, Douglas, Heard	45 min
Apr 4, 11:27 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Barrow, Gwinnett, Hall, Jackson	48 min
Apr 4, 11:31 PM EDT	Severe Thunderstorm Warning	FFC	DeKalb, Gwinnett	44 min
Apr 4, 11:33 PM EDT	Severe Thunderstorm Warning	FFC	Clayton, Coweta, Fayette, Harris, Meriwether, Troup	57 min
Apr 4, 11:50 PM EDT	Severe Thunderstorm Warning	FFC	Chattahoochee, Marion, Muscogee, Talbot	55 min
Apr 4, 11:52 PM EDT	Severe Thunderstorm Warning	FFC	Henry, Newton, Rockdale, Walton	38 min
Apr 4, 11:59 PM EDT	Severe Thunderstorm Warning	FFC	Butts, Henry, Lamar, Monroe, Pike, Spalding and 1 more	46 min
Apr 5, 12:14 AM EDT	Severe Thunderstorm Warning	FFC	Barrow, Clarke, Jackson, Madison, Oconee, Oglethorpe	61 min
Apr 5, 12:22 AM EDT	Severe Thunderstorm Warning	FFC	Marion, Stewart, Webster	53 min
Apr 5, 12:28 AM EDT	Severe Thunderstorm Warning	FFC	Jasper, Morgan, Newton, Rockdale, Walton	47 min
Apr 5, 12:41 AM EDT	Severe Thunderstorm Warning	FFC	Butts, Chattahoochee, Crawford, Jasper, Jones, Lamar and 5 more	49 min
Apr 5, 12:48 AM EDT	River Flood Warning	FFC	Dade	15 hr
Apr 5, 12:59 AM EDT	Severe Thunderstorm Warning	FFC	Dooly, Macon, Schley, Sumter	46 min
Apr 5, 1:08 AM EDT	Severe Thunderstorm Warning	FFC	Greene, Jasper, Morgan, Putnam	52 min
Apr 5, 1:12 AM EDT	Severe Thunderstorm Warning	FFC	Baldwin, Bibb, Crawford, Houston, Jones, Peach and 2 more	63 min
Apr 5, 1:16 AM EDT	Severe Thunderstorm Warning	FFC	Webster	14 min
Apr 5, 1:28 AM EDT	Severe Thunderstorm Warning	FFC	Hancock, Taliaferro, Warren	47 min
Apr 5, 1:30 AM EDT	Severe Thunderstorm Warning	FFC	Wilkes	45 min
Apr 5, 1:44 AM EDT	Severe Thunderstorm Warning	FFC	Bleckley, Crisp, Dodge, Dooly, Macon, Pulaski and 2 more	46 min
Apr 5, 1:57 AM EDT	Severe Thunderstorm Warning	FFC	Glascock, Jefferson, Johnson, Laurens, Washington	63 min
Apr 5, 2:11 AM EDT	Severe Thunderstorm Warning	FFC	Wilkinson	19 min
Apr 5, 2:12 AM EDT	Severe Thunderstorm Warning	FFC	Hancock, Warren	33 min
Apr 5, 2:31 AM EDT	Severe Thunderstorm Warning	FFC	Bleckley, Dodge, Pulaski, Telfair, Wheeler, Wilcox	59 min
Apr 5, 2:55 AM EDT	Severe Thunderstorm Warning	FFC	Jefferson, Johnson, Laurens, Washington	35 min
Apr 5, 3:09 AM EDT	Severe Thunderstorm Warning	FFC	Emanuel, Montgomery, Toombs, Treutlen	66 min
Apr 5, 3:29 AM EDT	Severe Thunderstorm Warning	FFC	Johnson	16 min
Apr 5, 6:10 AM EDT	River Flood Warning	FFC	Forsyth	3 hr
Apr 5, 3:25 PM EDT	Frost Advisory	FFC	Baldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 72 more	18 hr
Apr 5, 3:25 PM EDT	Freeze Warning	FFC	Fannin, Towns, Union	18 hr

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.