Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 7, NWS Atlanta, GA

February 25, 2011Carroll County, Haralson County, Paulding County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Feb 25, 2011, 2:48 AM EST for Carroll County, Haralson County, Paulding County, Georgia. It was in force for 27 min. 2 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
Feb 25, 2011, 2:48 AM EST (07:48 UTC)
Expired
Feb 25, 2011, 3:15 AM EST
In force
27 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon

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

The radar

The Atlanta radar (KFFC), 62 km from the middle of the area, began a volume at 07:49 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

TimeReportWhereRemark
Feb 25, 2:55 AM ESTTSTM WND DMGDallas, GAONE TREE DOWN ON HIGH SHOALS ROAD.
Feb 25, 3:02 AM ESTTSTM WND DMGCarrollton, GATWO TREES AND TWO POWER LINES DOWN.

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.

IssuedProductOfficeLasted
Feb 24, 11:59 PM ESTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 7.8 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 00:00Z on 2011-02-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 00:00Z on 2011-02-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 137 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
2 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
1511 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
137 m²/s²
0-3 km storm-relative helicity
274 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.

420 
WUUS52 KFFC 250748
SVRFFC
GAC045-143-223-250815-
/O.NEW.KFFC.SV.W.0007.110225T0748Z-110225T0815Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
248 AM EST FRI FEB 25 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

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

* UNTIL 315 AM EST

* AT 244 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS   
  UP TO 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING     
  FROM 7 MILES EAST OF BRASWELL TO TEMPLE TO BOWDON... MOVING EAST   
  AT 20 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MOUNT
  ZION...DALLAS...VILLA RICA...ROOPVILLE...CARROLLTON AND HIRAM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM EST FRIDAY
MORNING FOR NORTHERN GEORGIA.

&&

LAT...LON 3395 8501 3396 8498 3403 8495 3409 8490
      3409 8474 3379 8471 3378 8490 3357 8490
      3342 8505 3343 8530 3358 8533
TIME...MOT...LOC 0747Z 278DEG 17KT 3403 8483 3375 8505
          3355 8532

$$
1 follow-up statement
133 
WWUS52 KFFC 250814
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
314 AM EST FRI FEB 25 2011

GAC045-143-223-250824-
/O.EXP.KFFC.SV.W.0007.000000T0000Z-110225T0815Z/
CARROLL GA-HARALSON GA-PAULDING GA-
314 AM EST FRI FEB 25 2011

...THE SEVERE THUNDERSTORM WARNING FOR PAULDING...EASTERN HARALSON 
AND CARROLL COUNTIES WILL BE ALLOWED TO EXPIRE AT 315 AM EST...

AT 314 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE 
LINE OF STORMS HAVE MOVED EAST... AND THEREFORE THE WARNING WILL BE 
ALLOWED TO EXPIRE AT 315 AM EST. 

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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM EST FRIDAY
MORNING FOR NORTHERN GEORGIA.

LAT...LON 3395 8501 3396 8498 3403 8495 3409 8490
      3409 8474 3379 8471 3378 8490 3357 8490
      3342 8505 3343 8530 3358 8533
TIME...MOT...LOC 0814Z 278DEG 17KT 3401 8468 3373 8490
          3353 8517

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 25, 1:12 AM ESTSevere Thunderstorm WarningFFCCatoosa, Chattooga, Dade, Floyd, Walker63 min
Feb 25, 1:48 AM ESTSevere Thunderstorm WarningFFCBartow, Floyd, Gordon, Murray, Whitfield57 min
Feb 25, 1:51 AM ESTSevere Thunderstorm WarningFFCCarroll, Douglas, Haralson, Paulding, Polk54 min
Feb 25, 2:25 AM ESTSevere Thunderstorm WarningFFCCherokee, Fannin, Gilmer, Pickens54 min
Feb 25, 2:36 AM ESTSevere Thunderstorm WarningFFCCarroll, Coweta, Heard, Troup54 min
Feb 25, 2:43 AM ESTSevere Thunderstorm WarningFFCCarroll, Cobb, Douglas, Fulton, Hall62 min
Feb 25, 3:19 AM ESTWind AdvisoryFFCBaldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 90 more13 hr

Nearby

Severe Thunderstorm Warnings in Georgia, 2011Every 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.