Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 503, NWS Atlanta, GA

November 16, 2011Chattahoochee County, Marion County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Nov 16, 2011, 2:41 PM EST for Chattahoochee County, Marion County, Georgia. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Nov 16, 2011, 2:41 PM EST (19:41 UTC)
Expired: Nov 16, 2011, 3:05 PM EST
In force: 24 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Chattahoochee County, GA, Marion County, GA

The radar

The Atlanta radar (KFFC), 99 km from the middle of the area, began a volume at 19:42 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Nov 16, 10:46 AM EST	Tornado Watch	SPC	7 hr
Nov 16, 1:35 PM EST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.7 hours before the alert went out and 100 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: 627 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 484 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 108 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

814 
WUUS52 KFFC 161941
SVRFFC
GAC053-197-162015-
/O.NEW.KFFC.SV.W.0503.111116T1941Z-111116T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
241 PM EST WED NOV 16 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN CHATTAHOOCHEE COUNTY IN WEST CENTRAL GEORGIA
  NORTHERN MARION COUNTY IN WEST CENTRAL GEORGIA

* UNTIL 315 PM EST

* AT 236 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS UP TO 60
  MPH.  THIS STORM WAS LOCATED 11 MILES NORTHWEST OF BUENA VISTA...
  MOVING EAST AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  BRANTLEY...MARION ESTATES...OAKLAND...TAZEWELL AND FIVE POINTS.

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.

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 900 PM EST WEDNESDAY EVENING
FOR GEORGIA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 700 PM EST
WEDNESDAY EVENING FOR NORTHERN GEORGIA.

&&

LAT...LON 3245 8476 3248 8474 3252 8457 3255 8453
      3254 8451 3257 8447 3256 8445 3250 8444
      3248 8441 3245 8441 3243 8439 3233 8439
      3230 8470
TIME...MOT...LOC 1941Z 253DEG 41KT 3241 8461

$$

2 follow-up statements

918 
WWUS52 KFFC 161957
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
257 PM EST WED NOV 16 2011

GAC053-162006-
/O.CAN.KFFC.SV.W.0503.000000T0000Z-111116T2015Z/
CHATTAHOOCHEE GA-
257 PM EST WED NOV 16 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CHATTAHOOCHEE
COUNTY IS CANCELLED...

THE STORM THAT PROMPTED THE WARNING HAS EXITED CHATTAHOOCHEE 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 900 PM EST WEDNESDAY EVENING
FOR GEORGIA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 700 PM EST
WEDNESDAY EVENING FOR NORTHERN GEORGIA.

LAT...LON 3231 8460 3251 8459 3255 8453 3254 8451
      3257 8448 3256 8446 3256 8445 3250 8444
      3248 8441 3245 8441 3243 8439 3233 8439
TIME...MOT...LOC 1956Z 253DEG 41KT 3246 8442

$$

GAC197-162015-
/O.CON.KFFC.SV.W.0503.000000T0000Z-111116T2015Z/
MARION GA-
257 PM EST WED NOV 16 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EST
FOR NORTHERN MARION COUNTY...

AT 255 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS UP
TO 60 MPH. THIS STORM WAS LOCATED NEAR FIVE POINTS...MOVING EAST AT
45 MPH.

THIS STORM HAS WEAKENED...BUT IS STILL CAPABLE OF PRODUCING STRONG 
WINDS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EST WEDNESDAY EVENING 
FOR GEORGIA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 700 PM EST 
WEDNESDAY EVENING FOR NORTHERN GEORGIA.

&&

LAT...LON 3231 8460 3251 8459 3255 8453 3254 8451
      3257 8448 3256 8446 3256 8445 3250 8444
      3248 8441 3245 8441 3243 8439 3233 8439
TIME...MOT...LOC 1956Z 253DEG 41KT 3246 8442

$$

161 
WWUS52 KFFC 162005
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
305 PM EST WED NOV 16 2011

GAC197-162014-
/O.CAN.KFFC.SV.W.0503.000000T0000Z-111116T2015Z/
MARION GA-
305 PM EST WED NOV 16 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN MARION COUNTY IS
CANCELLED...

THE STORM THAT PROMPTED THE WARNING HAS WEAKENED AND EXITED MARION 
COUNTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EST WEDNESDAY EVENING
FOR GEORGIA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 700 PM EST
WEDNESDAY EVENING FOR NORTHERN GEORGIA.

LAT...LON 3231 8460 3251 8459 3255 8453 3254 8451
      3257 8448 3256 8446 3256 8445 3250 8444
      3248 8441 3245 8441 3243 8439 3233 8439
TIME...MOT...LOC 2004Z 253DEG 41KT 3249 8431

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 16, 11:23 AM EST	Special Weather Statement	FFC	Dade	67 min
Nov 16, 12:04 PM EST	Special Weather Statement	FFC	Floyd, Polk	41 min
Nov 16, 12:22 PM EST	Special Weather Statement	FFC	Carroll, Douglas	38 min
Nov 16, 12:46 PM EST	Tornado Warning	FFC	Cobb, Paulding	29 min
Nov 16, 1:06 PM EST	Tornado Warning	FFC	Cherokee, Cobb, Fulton	39 min
Nov 16, 1:11 PM EST	Tornado Warning	FFC	Harris, Troup	49 min
Nov 16, 1:25 PM EST	Severe Thunderstorm Warning	FFC	Cobb, DeKalb, Fulton	35 min
Nov 16, 1:28 PM EST	Severe Thunderstorm Warning	FFC	Cherokee, Forsyth	47 min
Nov 16, 1:42 PM EST	Special Weather Statement	FFC	Fannin, Murray	48 min
Nov 16, 1:44 PM EST	Tornado Warning	FFC	DeKalb, Fulton, Gwinnett	26 min
Nov 16, 1:52 PM EST	Tornado Warning	FFC	Harris, Meriwether, Talbot, Upson	38 min
Nov 16, 1:59 PM EST	Severe Thunderstorm Warning	FFC	Fannin, Union	31 min
Nov 16, 2:04 PM EST	Special Weather Statement	FFC	Hall	26 min
Nov 16, 2:13 PM EST	Special Weather Statement	FFC	Chattahoochee, Marion, Muscogee	47 min
Nov 16, 2:24 PM EST	Tornado Warning	FFC	Lamar, Meriwether, Pike, Talbot, Upson	36 min
Nov 16, 2:37 PM EST	Special Weather Statement	FFC	Murray	53 min
Nov 16, 2:56 PM EST	Special Weather Statement	FFC	Jasper, Lamar, Monroe	34 min
Nov 16, 3:00 PM EST	Special Weather Statement	FFC	Stewart, Webster	45 min
Nov 16, 3:08 PM EST	Tornado Warning	FFC	Jasper, Jones, Monroe, Putnam	39 min
Nov 16, 3:20 PM EST	Severe Thunderstorm Warning	FFC	Bibb, Twiggs, Wilkinson	40 min
Nov 16, 3:32 PM EST	Severe Thunderstorm Warning	FFC	Glascock, Jefferson, Washington	58 min
Nov 16, 3:38 PM EST	Special Weather Statement	FFC	Macon, Marion, Schley, Sumter, Webster	37 min
Nov 16, 3:44 PM EST	Special Weather Statement	FFC	Hancock, Putnam	46 min
Nov 16, 3:44 PM EST	Tornado Warning	FFC	Glascock, Jefferson, Washington	46 min
Nov 16, 3:54 PM EST	Severe Thunderstorm Warning	FFC	Bleckley, Houston, Twiggs	36 min
Nov 16, 4:03 PM EST	Severe Thunderstorm Warning	FFC	Baldwin, Washington, Wilkinson	42 min
Nov 16, 4:13 PM EST	Special Weather Statement	FFC	Macon, Schley, Sumter, Taylor	32 min
Nov 16, 4:17 PM EST	Severe Thunderstorm Warning	FFC	Laurens, Wilkinson	43 min
Nov 16, 4:21 PM EST	Special Weather Statement	FFC	Dooly	39 min
Nov 16, 4:23 PM EST	Tornado Warning	FFC	Jefferson, Washington	37 min
Nov 16, 4:50 PM EST	Tornado Warning	FFC	Johnson, Laurens	40 min
Nov 16, 5:00 PM EST	Special Weather Statement	FFC	Crisp	30 min
Nov 16, 5:00 PM EST	Tornado Warning	FFC	Jefferson	45 min
Nov 16, 5:06 PM EST	Tornado Warning	FFC	Jefferson	39 min
Nov 16, 5:21 PM EST	Special Weather Statement	FFC	Crisp, Pulaski, Wilcox	24 min
Nov 16, 5:27 PM EST	Tornado Warning	FFC	Emanuel	48 min
Nov 16, 5:41 PM EST	Special Weather Statement	FFC	Dodge, Pulaski, Wilcox	49 min
Nov 16, 5:54 PM EST	Severe Thunderstorm Warning	FFC	Dodge, Telfair, Wilcox	51 min
Nov 16, 6:40 PM EST	Severe Thunderstorm Warning	FFC	Telfair, Wheeler	37 min
Nov 16, 6:51 PM EST	Tornado Warning	FFC	Montgomery, Telfair, Wheeler	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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.