Alert archive / Georgia / Special Weather Statements in 2012

Special Weather Statement, NWS Atlanta, GA

April 3, 2012Cherokee County, Georgia

NWS Atlanta, GA issued this special weather statement at Apr 3, 2012, 1:13 PM EDT for Cherokee County, Georgia. It was in force for 32 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
Apr 3, 2012, 1:13 PM EDT (17:13 UTC)
Expired
Apr 3, 2012, 1:45 PM EDT
In force
32 min
Issued by
NWS Atlanta, GA

County Cherokee County, GA

The radar

The Atlanta radar (KFFC), 105 km from the middle of the area, began a volume at 17:14 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 nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 5.2 hours before the alert went out and 103 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 2012-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 857 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 12:00Z on 2012-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -29 square meters per square second.1939Sfc1 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
857 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
920 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-29 m²/s²
0-3 km storm-relative helicity
5 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.

134 
WWUS82 KFFC 031713
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
113 PM EDT TUE APR 3 2012

GAZ021-031745-
113 PM EDT TUE APR 3 2012

...SIGNIFICANT WEATHER ADVISORY FOR HEAVY RAIN IN CHEROKEE COUNTY
UNTIL 145 PM EDT...

AT 109 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER CANTON...MOVING EAST AT 5 MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE PENNY SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 40 MPH AS IT MOVES ACROSS
CHEROKEE COUNTY THROUGH 145 PM EDT. SOME LOCATIONS IN THE PATH OF
THIS STORM INCLUDE HOLLY SPRINGS...CANTON...WALESKA...BRIDGEMILL...
HICKORY FLAT...BUFFINGTON...FREE HOME...BALL GROUND...REAVIS
MOUNTAIN...HOLBROOK...LATHEMTOWN AND UNION HILL. HEAVY DOWNPOURS WILL
CAUSE PONDING OF WATER ON ROADWAYS.

&&

LAT...LON 3437 8440 3438 8439 3438 8426 3419 8426
      3419 8433 3418 8434 3417 8455 3435 8458
      3438 8442
TIME...MOT...LOC 1714Z 261DEG 5KT 3427 8446

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 3, 12:44 PM EDTSpecial Weather StatementFFCFannin31 min
Apr 3, 12:46 PM EDTSpecial Weather StatementFFCLumpkin29 min
Apr 3, 1:15 PM EDTSpecial Weather StatementFFCLumpkin, Union30 min
Apr 3, 1:38 PM EDTSpecial Weather StatementFFCCherokee, Dawson, Fannin, Gilmer, Lumpkin, Pickens and 2 more37 min
Apr 3, 2:15 PM EDTSpecial Weather StatementFFCDawson, Lumpkin, Towns, Union30 min
Apr 3, 2:43 PM EDTSpecial Weather StatementFFCDawson, Lumpkin, Towns, Union, White32 min
Apr 3, 3:09 PM EDTSpecial Weather StatementFFCDawson, Forsyth, Hall, Lumpkin, Towns, White36 min
Apr 3, 3:41 PM EDTSpecial Weather StatementFFCHall34 min
Apr 3, 4:03 PM EDTSevere Thunderstorm WarningFFCHall, Jackson42 min
Apr 3, 4:27 PM EDTSevere Thunderstorm WarningFFCBarrow, Jackson16 min
Apr 3, 4:55 PM EDTSevere Thunderstorm WarningFFCBanks21 min
Apr 3, 6:19 PM EDTSpecial Weather StatementFFCBarrow, Clarke26 min
Apr 3, 6:41 PM EDTSpecial Weather StatementFFCBarrow, Clarke, Oconee, Oglethorpe34 min
Apr 3, 7:23 PM EDTSpecial Weather StatementFFCBarrow, Clarke37 min

Nearby

Special Weather Statements in Georgia, 2012Every special weather statement in 2012

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.