Alert archive / Georgia / Special Weather Statements in 2012

Special Weather Statement, NWS Atlanta, GA

August 3, 2012Hall County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 3, 2012, 9:49 PM EDT for Hall County, Georgia. It was in force for 41 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
Aug 3, 2012, 9:49 PM EDT (01:49 UTC)
Expired
Aug 3, 2012, 10:30 PM EDT
In force
41 min
Issued by
NWS Atlanta, GA

County Hall County, GA

The radar

The Greer radar (KGSP), 140 km from the middle of the area, began a volume at 01:50 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 00:00Z, 1.8 hours before the alert went out and 144 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 2012-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1273 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 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 2012-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -8 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
1273 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
1107 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-8 m²/s²
0-3 km storm-relative helicity
6 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.

980 
WWUS82 KFFC 040149
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
949 PM EDT FRI AUG 3 2012

GAZ016-023-024-040230-
949 PM EDT FRI AUG 3 2012

...SIGNIFICANT WEATHER ADVISORY FOR PEA SIZED HAIL AND 40 MPH WINDS
IN WHITE...BANKS AND HALL COUNTIES UNTIL 1030 PM EDT...

AT 947 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER LULA THE THUNDERSTORM WAS NEARLY STATIONARY.

THESE STORMS HAVE THE POTENTIAL TO PRODUCE PEA SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 40 MPH AS THEY MOVE
ACROSS WHITE...BANKS AND HALL COUNTIES THROUGH 1030 PM EDT. SOME
LOCATIONS IN THE PATH OF THESE STORMS INCLUDE CLERMONT...LULA AND
MOSSY CREEK. HEAVY DOWNPOURS WILL CAUSE PONDING OF WATER ON ROADWAYS.

&&

LAT...LON 3453 8362 3451 8365 3444 8362 3446 8358
      3436 8350 3427 8378 3443 8388 3458 8365
TIME...MOT...LOC 0149Z 241DEG 2KT 3440 8374

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 8:17 PM EDTSpecial Weather StatementFFCGreene43 min
Aug 3, 8:32 PM EDTSpecial Weather StatementFFCHenry28 min
Aug 3, 8:46 PM EDTSpecial Weather StatementFFCHall44 min
Aug 3, 8:55 PM EDTSpecial Weather StatementFFCPike50 min
Aug 3, 9:10 PM EDTSpecial Weather StatementFFCJohnson50 min
Aug 3, 9:31 PM EDTSpecial Weather StatementFFCSpalding44 min
Aug 3, 10:05 PM EDTSpecial Weather StatementFFCJefferson40 min
Aug 4, 12:34 AM EDTSpecial Weather StatementFFCPutnam26 min
Aug 4, 1:00 AM EDTSpecial Weather StatementFFCHancock, Putnam30 min
Aug 4, 2:43 PM EDTSpecial Weather StatementFFCFloyd62 min
Aug 4, 3:11 PM EDTSpecial Weather StatementFFCPolk49 min
Aug 4, 3:57 PM EDTSpecial Weather StatementFFCPolk33 min
Aug 4, 5:02 PM EDTSpecial Weather StatementFFCHaralson, Polk43 min
Aug 4, 7:18 PM EDTSpecial Weather StatementFFCBarrow, Jackson27 min
Aug 4, 7:27 PM EDTSpecial Weather StatementFFCDouglas33 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.