Alert archive / Georgia / Special Weather Statements in 2011

Special Weather Statement, NWS Atlanta, GA

August 5, 2011Madison County, Oglethorpe County, Wilkes County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 5, 2011, 6:02 PM EDT for Madison County, Oglethorpe County, Wilkes County, Georgia. It was in force for 43 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
Aug 5, 2011, 6:02 PM EDT (22:02 UTC)
Expired
Aug 5, 2011, 6:45 PM EDT
In force
43 min
Issued by
NWS Atlanta, GA

Counties Madison County, GA, Oglethorpe County, GA, Wilkes County, GA

The radar

The Greer radar (KGSP), 118 km from the middle of the area, began a volume at 22:03 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
Aug 5, 6:17 PM EDTTSTM WND DMG3 N Comer, GATWO TREES BLOWN DOWN ON HIGHWAY 191...TWO TREES BLOWN DOWN HIGHWAY 98...TWO TREES BLOWN DOWN ON HIGHWAY 172. ALSO ONE TREE BLOWN DOWN ON POWER LINES IN CARLTON.
Aug 5, 6:17 PM EDTHAIL 0.25Comer, GAOCCURRED AT THE FIRE STATION IN COMER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.0 hours before the alert went out and 158 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 2011-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 369 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 2011-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -27 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
369 J/kg
Mixed-layer CIN
-129 J/kg
Mixed-layer LCL
1148 m above ground
0-6 km bulk shear
2 kt
0-1 km storm-relative helicity
-27 m²/s²
0-3 km storm-relative helicity
-23 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.

129 
WWUS82 KFFC 052202
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
602 PM EDT FRI AUG 5 2011

GAZ027-038-039-052245-
602 PM EDT FRI AUG 5 2011

...SIGNIFICANT WEATHER ADVISORY FOR FREQUENT LIGHTNING AND HEAVY 
RAIN IN WILKES...OGLETHORPE AND MADISON COUNTIES UNTIL 645 PM EDT...

AT 600 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS FROM HARRISON TO 6 MILES EAST OF LEXINGTON...
MOVING EAST AT 20 MPH.

THESE STORMS HAVE THE POTENTIAL TO PRODUCE PEA SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 45 MPH AS THEY MOVE
ACROSS WILKES...OGLETHORPE AND MADISON COUNTIES THROUGH 645 PM EDT.
SOME LOCATIONS IN THE PATH OF THESE STORMS INCLUDE SANDY CROSS...
STEPHENS...SMITHONIA...LEXINGTON...HUTCHINGS...CRAWFORD...WATSON MILL
BRIDGE STATE PARK...PAOLI...DIAMOND HILL...POCATALIGO...ILA...
COLBERT...COMER...DANIELSVILLE AND POINT PETER. BRIEF HEAVY DOWNPOURS
WILL CAUSE PONDING OF WATER ON ROADWAYS.

&&

LAT...LON 3378 8265 3375 8315 3403 8326 3421 8336
      3426 8310 3423 8307 3417 8309 3415 8305
      3405 8297 3401 8293 3402 8291 3399 8286
      3398 8273
TIME...MOT...LOC 2202Z 270DEG 19KT 3422 8317 3408 8308
          3387 8300

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 4:49 PM EDTSpecial Weather StatementFFCBanks41 min
Aug 5, 4:56 PM EDTSevere Thunderstorm WarningFFCDade, Walker49 min
Aug 5, 5:28 PM EDTSpecial Weather StatementFFCMadison, Oglethorpe32 min
Aug 5, 5:50 PM EDTSpecial Weather StatementFFCWalker25 min
Aug 5, 6:17 PM EDTSevere Thunderstorm WarningFFCMadison28 min
Aug 5, 6:32 PM EDTFlash Flood WarningFFCMadison2 hr
Aug 5, 7:33 PM EDTSpecial Weather StatementFFCOconee, Walton27 min

Nearby

Special Weather Statements in Georgia, 2011Every special weather statement 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.