Alert archive / Georgia / Special Weather Statements in 2011

Special Weather Statement, NWS Atlanta, GA

August 11, 2011Bleckley County, Laurens County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 11, 2011, 3:34 PM EDT for Bleckley County, Laurens 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 11, 2011, 3:34 PM EDT (19:34 UTC)
Expired: Aug 11, 2011, 4:15 PM EDT
In force: 41 min
Issued by: NWS Atlanta, GA

Counties Bleckley County, GA, Laurens County, GA

The radar

The Robins AFB radar (KJGX), 27 km from the middle of the area, began a volume at 19:36 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, 7.6 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 764 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 1287 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 66 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.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Atlanta, GA wrote its last area forecast discussion before this special weather statement went out at Aug 11, 1:42 PM EDT, 1 hour 52 minutes earlier.

Area forecast discussion, Aug 11, 1:42 PM EDT, 1 hour 52 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
142 PM EDT THU AUG 11 2011

.PREV DISCUSSION... /ISSUED 1051 AM EDT THU AUG 11 2011/

UPDATE...
12Z SOUNDING SHOWS AN INCREASE IN MOISTURE AS COMPARED TO
YESTERDAY. ANOTHER MCS IS TRACKING INTO ALABAMA TODAY BUT LIKE
YESTERDAY IT IS WEAKENING. BIG DIFFERENCE IS IT IS ALREADY FURTHER
EAST THAN YESTERDAY SO MAY SEE MORE IMPACTS ACROSS THE CWA.
REFLECTIVITY OUTPUT FROM MODELS ALL INDICATE THE DEVELOPMENT OF
THUNDERSTORMS ACROSS THE CWA THIS AFTERNOON...BUT DIFFER ON
LOCATION. THINK BEST CHANCE THOUGH IS WEST CENTRAL GEORGIA AND
THIS IS ALSO WHERE THE BEST INSTABILITY IS LOCATED WITH AROUND
1000 J/KG OF MU CAPE. CONTINUED CHANCE OF SHOWERS AND THUNDERSTORMS
ACROSS CWA FOR THIS AFTERNOON BUT DROPPED IT TO A SLIGHT CHANCE
ACROSS PARTS OF EAST CENTRAL GEORGIA...ALONG WITH BORDER WITH THE
COLUMBIA OFFICE. MAIN THREAT WITH THUNDERSTORMS WILL BE GUSTY
WINDS.

TEMPS ARE WARMING UP QUICKER THAN FORECAST BUT STILL THINK HIGHS
ARE ON TRACK. DEW POINTS ARE ALSO HIGHER THAN FORECAST SO
INCREASED THEM FOR THIS AFTERNOON...BUT MAINLY ACROSS THE SOUTH.

PREV DISCUSSION... /ISSUED 747 AM EDT THU AUG 11 2011/

SHORT TERM /TODAY THROUGH SATURDAY/...
/ISSUED 417 AM EDT THU AUG 11 2011/
GEORGIA REMAINS IN A BROAD TROUGH ALOFT THROUGH THE SHORT TERM
WITH A SERIES OF IMPULSES SLIDING SOUTHEAST INTO THE CWA. TIMING
ON ANY PARTICULAR ONE IS QUESTIONABLE...SO HAVE GENERALLY KEPT
CHANCE OR SLIGHT CHANCE OVER THE CWA...WITH LOWEST POPS AFTER 06Z
EACH NIGHT. LOOKS LIKE A STRONGER SHORT WAVE FOR SATURDAY BUT AT
THIS POINT CHANCE POPS STILL LOOK OKAY. TEMPERATURES STILL HOT
WITH HIGHS AGAIN MID TO UPPER 90S. WITH LOWER DEW POINTS...HEAT
ADVISORY CRITERIA WILL NOT BE MET. AN EAST OR SOUTHEAST FLOW ON
FRIDAY AND SATURDAY COULD BRING HIGHS DOWN A BIT...BUT STILL LOW
OR MID 90S MOST AREAS EXCEPT UPPER 80S MOUNTAINS.

LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
/ISSUED 417 AM EDT THU AUG 11 2011/
UPPER TROUGH DEEPENS DURING THE WEEKEND AS SHORT WAVE ENERGY DROPS
INTO THE OHIO VALLEY REGION. THIS COULD PUSH A FRONT THROUGH THE
CWA AND HAVE INDICATED SOME DRYING FOR MONDAY AND TUESDAY.
WEDNESDAY SHOWS SOME MOISTURE INCREASE AND WEAK IMPULSES MOVING
ACROSS THE CWA...SO HAVE INTRODUCED LOW POPS AGAIN FOR WEDNESDAY.
HIGH TEMPERATURES SHOW A TREND TOWARD 80S TO LOWER 90S.

41

&&

.AVIATION...
18Z UPDATE...
CONVECTION BEGINNING TO DEVELOP ACROSS WEST GEORGIA...HAVE
CONTINUED CB IN THE CLOUD GROUP FOR ALL BUT AHN TO ACCOUNT FOR
THIS. EXPECT SOME LOW VFR TO MVFR VSBY FRIDAY MORNING...MAINLY AT
MCN AND AHN...THOUGH IT WILL DEPEND ON WHERE RAIN FALLS. WESTERLY
WINDS THROUGH THE PERIOD...EXCEPT POSSIBLY BRIEF NORTHEASTERLY
EARLY FRIDAY MORNING. CB AGAIN IN THE CLOUD GROUP FRIDAY
AFTERNOON.

//ATL CONFIDENCE...18Z UPDATE...
HIGH ON WIND SPEEDS...MEDIUM TO LOW ON POTENTIAL WIND SHIFT
FRIDAY MORNING.
HIGH ON CIGS/VSBY.
LOW TO MEDIUM ON CONVECTION.

TDP

&&

.PRELIMINARY POINT TEMPS/POPS...
ATHENS          97  69  94  70 /  30  20  20  20
ATLANTA         95  72  93  73 /  30  20  20  20
BLAIRSVILLE     89  64  89  63 /  30  20  20  20
CARTERSVILLE    94  64  94  64 /  30  20  20  20
COLUMBUS        96  74  96  73 /  30  20  20  20
GAINESVILLE     95  71  92  70 /  30  20  20  20
MACON           97  71  96  70 /  30  20  20  20
ROME            94  65  94  65 /  30  20  20  20
PEACHTREE CITY  94  68  93  66 /  30  20  20  20
VIDALIA         97  74  97  74 /  30  20  30  20

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

Hazardous weather outlook, Aug 11, 5:32 AM EDT, 10 hours 2 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
532 AM EDT THU AUG 11 2011

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-120945-
BALDWIN-BANKS-BARROW-BARTOW-BIBB-BLECKLEY-BUTTS-CARROLL-CATOOSA-
CHATTAHOOCHEE-CHATTOOGA-CHEROKEE-CLARKE-CLAYTON-COBB-COWETA-
CRAWFORD-CRISP-DADE-DAWSON-DEKALB-DODGE-DOOLY-DOUGLAS-EMANUEL-
FANNIN-FAYETTE-FLOYD-FORSYTH-GILMER-GLASCOCK-GORDON-GREENE-
GWINNETT-HALL-HANCOCK-HARALSON-HARRIS-HEARD-HENRY-HOUSTON-JACKSON-
JASPER-JEFFERSON-JOHNSON-JONES-LAMAR-LAURENS-LUMPKIN-MACON-
MADISON-MARION-MERIWETHER-MONROE-MONTGOMERY-MORGAN-MURRAY-
MUSCOGEE-NEWTON-NORTH FULTON-OCONEE-OGLETHORPE-PAULDING-PEACH-
PICKENS-PIKE-POLK-PULASKI-PUTNAM-ROCKDALE-SCHLEY-SOUTH FULTON-
SPALDING-STEWART-SUMTER-TALBOT-TALIAFERRO-TAYLOR-TELFAIR-TOOMBS-
TOWNS-TREUTLEN-TROUP-TWIGGS-UNION-UPSON-WALKER-WALTON-WARREN-
WASHINGTON-WEBSTER-WHEELER-WHITE-WHITFIELD-WILCOX-WILKES-
WILKINSON-
532 AM EDT THU AUG 11 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH AND CENTRAL GEORGIA.

.DAY ONE...TODAY AND TONIGHT
ISOLATED THUNDERSTORMS POSSIBLE ACROSS NORTH AND CENTRAL GEORGIA.

.SYNOPSIS...
FRONTAL BOUNDARY ACROSS NORTH GEORGIA WILL PUSH SOUTH THROUGH THE
DAY TODAY AS AN UPPER LEVEL DISTURBANCE ENTERS THE REGION.

.PRIMARY HAZARDS...
THE PRIMARY HAZARDS WILL BE CLOUD TO GROUND LIGHTNING AND GUSTY WINDS.

.DISCUSSION...
AN UPPER LEVEL DISTURBANCE DROPS DOWN INTO NORTH AND CENTRAL
GEORGIA FROM THE TENNESSEE VALLEY TODAY AS FRONTAL BOUNDARY SHIFTS
SOUTHWARD. MOST UNSTABLE ATMOSPHERE EXPECTED OVER ALABAMA...THOUGH
MODELS INDICATE SOME WEAK TO MODERATE INSTABILITIES OVER
NORTH AND CENTRAL GEORGIA. PROVIDED ENOUGH MOISTURE ACROSS THE
AREA TODAY...THIS INSTABILITY IS ENOUGH TO PRODUCE ISOLATED
THUNDERSTORMS ESPECIALLY ACROSS WEST CENTRAL GEORGIA.
THUNDERSTORMS ARE EXPECTED TO REMAIN BELOW SEVERE LIMITS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY
THERE IS A CHANCE OF THUNDERSTORMS EACH DAY.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT EXPECTED THROUGH TONIGHT.

In the hours before

Local storm report, Aug 11, 2:41 PM EDT, 53 minutes before

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Special weather statement, Aug 11, 3:07 PM EDT, 27 minutes before

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Local storm report, Aug 11, 3:08 PM EDT, 26 minutes before

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Local storm report, Aug 11, 3:09 PM EDT, 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
309 PM EDT THU AUG 11 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0242 PM     HAIL             BOX SPRINGS             32.53N 84.66W
08/11/2011  U0.25 INCH       TALBOT             GA   POST OFFICE

            BOX SPRINGS POST OFFICE REPORTS HAIL OF UNKNOWN SIZE AND
            GUSTY WINDS.

&&

RGARCIA

Special weather statement, Aug 11, 3:16 PM EDT, 18 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
316 PM EDT THU AUG 11 2011

GAZ080-091>093-102>104-112000-
316 PM EDT THU AUG 11 2011

...SIGNIFICANT WEATHER ADVISORY FOR FREQUENT LIGHTNING AND 50 MPH
WINDS IN WEBSTER...SUMTER...STEWART...SCHLEY...MARION...MACON AND
TAYLOR COUNTIES UNTIL 400 PM EDT...

AT 312 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS FROM RUPERT TO BROOKLYN...MOVING SOUTHEAST AT 30
MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE DIME SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 50 MPH AS IT MOVES ACROSS
WEBSTER...SUMTER...STEWART...SCHLEY...MARION...MACON AND TAYLOR
COUNTIES THROUGH 400 PM EDT. SOME LOCATIONS IN THE PATH OF THIS STORM
INCLUDE CEDAR CREEK...CHARLES...LOUVALE...ZELLOBEE...TAZEWELL...BUENA
VISTA...RENFROE...RUPERT...CHARING...BROOKLYN...CONCORD...SEMINOLE...
DOYLE...IDEAL AND RICHLAND. BRIEF HEAVY DOWNPOURS WILL CAUSE PONDING
OF WATER ON ROADWAYS.

&&

LAT...LON 3192 8462 3214 8490 3224 8476 3223 8466
      3230 8466 3250 8430 3224 8396 3217 8403
      3208 8421 3194 8442 3195 8444 3191 8446
TIME...MOT...LOC 1915Z 312DEG 26KT 3239 8431 3229 8449
          3213 8474

Special weather statement, Aug 11, 3:34 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
334 PM EDT THU AUG 11 2011

GAZ096-097-109-112015-
334 PM EDT THU AUG 11 2011

...SIGNIFICANT WEATHER ADVISORY FOR 45 MPH WINDS AND FREQUENT
LIGHTNING IN LAURENS...BLECKLEY AND DODGE COUNTIES UNTIL 415 PM
EDT...

AT 331 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER GOLDSBORO...MOVING SOUTHEAST AT 15 MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE PEA SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND STRONG WIND GUSTS TO 45 MPH AS IT
MOVES ACROSS LAURENS...BLECKLEY AND DODGE COUNTIES THROUGH 415 PM
EDT. SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE GOLDSBORO...
CARY...REBIE...ROWLAND...CHESTER...DEXTER...HARLOW...CADWELL AND
RENTZ. BRIEF HEAVY DOWNPOURS WILL CAUSE PONDING OF WATER ON ROADWAYS.

&&

LAT...LON 3244 8336 3255 8329 3256 8327 3258 8322
      3245 8287 3225 8300
TIME...MOT...LOC 1934Z 298DEG 18KT 3247 8321

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 1:25 PM EDT	Special Weather Statement	FFC	Harris	50 min
Aug 11, 1:52 PM EDT	Severe Thunderstorm Warning	FFC	Harris, Meriwether, Troup	38 min
Aug 11, 2:11 PM EDT	Special Weather Statement	FFC	Muscogee	34 min
Aug 11, 2:30 PM EDT	Severe Thunderstorm Warning	FFC	Chattahoochee, Harris, Marion, Muscogee, Talbot, Taylor	45 min
Aug 11, 2:33 PM EDT	Special Weather Statement	FFC	Heard	42 min
Aug 11, 3:07 PM EDT	Special Weather Statement	FFC	Bleckley, Twiggs	38 min
Aug 11, 3:16 PM EDT	Special Weather Statement	FFC	Marion, Schley, Webster	44 min
Aug 11, 4:11 PM EDT	Special Weather Statement	FFC	Dodge	34 min
Aug 11, 4:18 PM EDT	Special Weather Statement	FFC	Crisp	27 min
Aug 11, 4:36 PM EDT	Special Weather Statement	FFC	Crisp, Wilcox	39 min
Aug 11, 4:45 PM EDT	Special Weather Statement	FFC	Montgomery, Wheeler	45 min
Aug 11, 5:20 PM EDT	Special Weather Statement	FFC	Telfair	25 min

Nearby

Special Weather Statements in Georgia, 2011 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.