Alert archive / Georgia / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 331, NWS Atlanta, GA

October 26, 20104 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Oct 26, 2010, 5:19 PM EDT for 4 counties in Georgia. It was in force for 21 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
Oct 26, 2010, 5:19 PM EDT (21:19 UTC)
Expired
Oct 26, 2010, 5:40 PM EDT
In force
21 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon

Counties Carroll County, GA, Cobb County, GA, Douglas County, GA, Paulding County, GA

The radar

The Atlanta radar (KFFC), 55 km from the middle of the area, began a volume at 21:21 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.

IssuedProductOfficeLasted
Oct 26, 2:16 PM EDTTornado WatchSPC8 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.3 hours before the alert went out and 59 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 12:00Z on 2010-10-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 832 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2010-10-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 248 square meters per square second.19395878Sfc1 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
832 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
541 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
248 m²/s²
0-3 km storm-relative helicity
273 m²/s²
Significant tornado parameter
1.2
Supercell composite
6.0

Open this sounding in Storm Lab

The text

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

113 
WUUS52 KFFC 262119
SVRFFC
GAC045-067-097-223-262200-
/O.NEW.KFFC.SV.W.0331.101026T2119Z-101026T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
519 PM EDT TUE OCT 26 2010

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN COBB COUNTY IN NORTH CENTRAL GEORGIA
  NORTHERN DOUGLAS COUNTY IN NORTH CENTRAL GEORGIA
  NORTHERN CARROLL COUNTY IN NORTHWEST GEORGIA
  SOUTHERN PAULDING COUNTY IN NORTHWEST GEORGIA

* UNTIL 600 PM EDT

* AT 517 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 STORM WAS LOCATED NEAR
  CARROLLTON...MOVING NORTHEAST AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  TEMPLE...VILLA RICA...DOUGLASVILLE...HIRAM...LITHIA SPRINGS...
  POWDER SPRINGS AND AUSTELL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3370 8515 3369 8511 3372 8505 3379 8504
      3402 8464 3382 8448 3376 8456 3352 8512
      3367 8523
TIME...MOT...LOC 2118Z 239DEG 38KT 3365 8507

$$
1 follow-up statement
190 
WWUS52 KFFC 262140
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
540 PM EDT TUE OCT 26 2010

GAC045-067-097-223-262148-
/O.CAN.KFFC.SV.W.0331.000000T0000Z-101026T2200Z/
DOUGLAS GA-CARROLL GA-PAULDING GA-COBB GA-
540 PM EDT TUE OCT 26 2010

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN COBB...SOUTHERN
PAULDING...NORTHERN CARROLL AND NORTHERN DOUGLAS COUNTIES IS
CANCELLED...

THE THUNDERSTORM HAS WEAKENED AND IS NO LONGER EXPECTED TO PRODUCE 
SEVERE WEATHER. HOWEVER...STRONG GUSTY WINDS UP TO 45 MPH AND HEAVY 
RAIN ARE POSSIBLE WITH THIS STORM.

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 1000 PM EDT TUESDAY EVENING
FOR NORTHERN GEORGIA.

LAT...LON 3370 8515 3369 8511 3372 8505 3379 8504
      3402 8464 3382 8448 3376 8456 3352 8512
      3367 8523
TIME...MOT...LOC 2138Z 239DEG 38KT 3376 8485

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 26, 4:07 PM EDTTornado WarningFFCCatoosa, Whitfield12 min
Oct 26, 5:07 PM EDTSevere Thunderstorm WarningFFCWhite8 min
Oct 26, 5:57 PM EDTSevere Thunderstorm WarningFFCWhite23 min
Oct 26, 6:04 PM EDTSevere Thunderstorm WarningFFCFannin, Gilmer26 min
Oct 26, 6:21 PM EDTSevere Thunderstorm WarningFFCFannin, Towns, Union39 min
Oct 26, 6:49 PM EDTSevere Thunderstorm WarningFFCForsyth, Fulton, Gwinnett, Hall26 min
Oct 26, 7:11 PM EDTSevere Thunderstorm WarningFFCGwinnett, Hall, Jackson49 min
Oct 26, 7:54 PM EDTTornado WarningFFCChattooga, Walker38 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2010Every severe thunderstorm warning in 2010

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.