Alert archive / Georgia / Special Weather Statements in 2011

Special Weather Statement, NWS Atlanta, GA

June 22, 20114 counties in Georgia

NWS Atlanta, GA issued this special weather statement at Jun 22, 2011, 2:56 PM EDT for 4 counties in Georgia. It was in force for 34 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: Jun 22, 2011, 2:56 PM EDT (18:56 UTC)
Expired: Jun 22, 2011, 3:30 PM EDT
In force: 34 min
Issued by: NWS Atlanta, GA

Counties Carroll County, GA, Douglas County, GA, Haralson County, GA, Paulding County, GA

The radar

The Atlanta radar (KFFC), 66 km from the middle of the area, began a volume at 18:58 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, 6.9 hours before the alert went out and 70 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: 43 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 1250 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 95 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Jun 22, 2:51 PM EDT, 5 minutes earlier.

Area forecast discussion, Jun 22, 2:51 PM EDT, 5 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
251 PM EDT WED JUN 22 2011

.SHORT TERM /TONIGHT THROUGH FRIDAY NIGHT/...

LATEST WIDE ANGLE VIEW OF THE MSAS ANALYSIS OF THE EASTERN HALF
OF THE UNTIED STATES SHOWS A DEEP EARLY SUMMER LOW PRESSURE SYSTEM
OVER THE NORTHERN PLAINS. THIS IS A LARGE AND SPRAWLING SYSTEM
WHICH HAS SUPPRESSED WEAK SURFACE HIGH WELL SOUTHWARD OVER THE
SOUTHERN PENINSULA OF FLORIDA. THIS HAS LEFT THE STATE WITHIN TWO
REGIMES...ONE INFLUENCED BY AFOREMENTIONED LOW WITH ADDITIONAL UPPER
ENERGY PROMOTING WIDESPREAD SHOWER AND THUNDERSTORM ACTIVITY OVER
NORTH AND MOST OF CENTRAL GA. ELSEWHERE...VESTIGES OF MID AND
UPPER LEVEL HIGH REMAIN THE DOMINANT FEATURES AND SHOULD SHUNT
MAJORITY OF THE ACTIVITY NORTHWARD IN THE VERY SHORT TERM.

WITH AFOREMENTIONED SETUP...A SHARP GRADIENT TO POPS IS REQUIRED
AND INHERITED FORECAST INITIALIZES THIS ASPECT OF THE FORECAST
NICELY. THE ONLY ADJUSTMENT NEEDED FROM THE OUTSET IS TO SHIFT THE
ZONE OF CATEGORICAL POPS SOUTHWARD BASED ON LATEST TRENDS OF AN
ORGANIZED LINE EMANATING OUT OF CENTRAL ALABAMA. THUS
FAR...ACTIVITY HAS BEEN FEEDING OFF A ZONE OF ENHANCED MIXED LAYER
CAPE...BUT ONLY ON THE ORDER OF 1500 TO 2000 J/KG...MODEST FOR
THIS TIME YEAR. THEREFORE...SYNOPTIC LIFT IS PRODUCING WIDESPREAD
ACTIVITY BUT LACK OF STRONG INSTABILITY IS THUS FAR LIMITING
ROBUST UPDRAFTS.

THE MAIN CONCERN AT THIS POINT IS FOR LOCATIONS OUTSIDE OF
IMMINENT RAINFALL AS TEMPERATURES TO THE EAST ESPECIALLY HAVE
ALREADY SURPASSED AFTERNOON HIGH PROJECTIONS OF THE MODELS BY 3 TO
5 DEGREES. THIS SHOULD ADD INSTABILITY TO THESE LOCATIONS INTO THE
LATE AFTERNOON PRIOR TO THE ARRIVAL OF THE CONVECTION. AS FAR AS
WIND SHEAR IS CONCERNED...HIGHER BULK SHEAR VALUES REMAIN WELL
NORTH OF THE AREA BUT SOME ENHANCED LOW LEVEL HELICITY IS NOTED
ALONG THE GA/TN BORDER AND WILL BEAR WATCHING AS CONVECTIVE
PROCESSES INCREASE THIS AFTERNOON. STILL ANTICIPATE WINDS AND TO A
LESSER EXTENT HAIL TO BE THE MAIN CONCERNS.

EXPECT ACTIVITY TO LINGER INTO THE FIRST PART OF THE OVERNIGHT AS
MOISTURE AXIS SINKS SOUTHWARD ACROSS THE STATE. SHOULD SEE JUST
ENOUGH CLEARING FOR THU MORNING TO ALLOW INSTABILITY TO BUILD OVER
CENTRAL AND SOUTH GA. AXIS OF DEEPEST MOISTURE WILL CONTINUE TREK
SOUTHWARD DURING THE DAY AND WILL FAVOR A SOUTHERN SOLUTION FOR
HIGHEST POPS (60 PERCENT) FROM ATL SOUTHWARD.

WILL BE IN A BONAFIDE FULL SCALE EAST COAST UPPER TROUGH BY FRIDAY
BUT MAIN SHORTWAVE ENERGY TRANSPORT WILL BE NORTH OF THE AREA. IN
ADDITION...MOISTURE DEPTH WILL BE DECREASING ALLOWING FOR FEWER
STORMS. THAT SAID...ANY STORMS THAT DO FORM COULD PRODUCE LARGE
HAIL GIVEN INCREASED MID LEVEL SHEAR AND TEMPS AT 500 MB
DECREASING TO -10C.

.LONG TERM /SATURDAY THROUGH WEDNESDAY/...VARIOUS SHORTWAVES TO
DIVE IN ON THE EASTERN PERIPHERY OF DEVELOPING UPPER RIDGE...THE
STRONGEST OF WHICH ARRIVES MONDAY. RIDGE BEGINS TO BUILD BACK IN BY
TUESDAY WITH DECREASING RAIN CHANCES AND WARMING TEMPS. CURRENT
EXTENDED HAS A GOOD HANDLE ON THIS AND NO CHANGES PLANNED.

&&

.AVIATION...
18Z UPDATE...
MAIN FORECAST ISSUE THIS PERIOD WILL BE TIMING OF CONVECTION
EXPECTED ACROSS THE TAF SITES. BASED UPON LATEST RADAR TRENDS...
SHOWERS ARE DEVELOPING AROUND ATL WITH CONVECTION IN THE AREA BY
20Z. COULD SEE A THUNDERSTORM OVER ATL BETWEEN 2Z AND 01Z. WINDS
WILL REMAIN SOUTHWEST THROUGH THE PERIOD AS SURFACE HIGH REMAINS
OVER FL. INCREASED MOISTURE WILL LOWER CIGS ACROSS MUCH OF THE
AREA THURSDAY MORNING...FLIRTING WITH IFR CONDITIONS.

//ATL CONFIDENCE...18Z UPDATE...
HIGH CONFIDENCE ON WIND SPEEDS/DIRECTION AND VISIBILITY.
MEDIUM TO HIGH CONFIDENCE ON CONVECTION TIMING.
MEDIUM CONFIDENCE ON CIGS.

12

&&

.PRELIMINARY POINT TEMPS/POPS...
ATHENS          71  88  71  92 /  50  30  20  40
ATLANTA         71  87  71  89 /  50  30  30  40
BLAIRSVILLE     65  82  65  83 /  60  40  30  40
CARTERSVILLE    69  87  68  90 /  50  40  30  40
COLUMBUS        72  89  71  92 /  40  50  20  40
GAINESVILLE     70  86  69  89 /  60  40  30  40
MACON           74  90  71  94 /  30  50  20  30
ROME            69  88  69  91 /  50  40  30  40
PEACHTREE CITY  69  86  68  90 /  40  30  20  40
VIDALIA         76  92  73  93 /  20  40  20  40

&&

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

DEESE

Hazardous weather outlook, Jun 22, 12:27 PM EDT, 2 hours 29 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1227 PM EDT WED JUN 22 2011

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-231630-
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-
1227 PM EDT WED JUN 22 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH AND CENTRAL GEORGIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT
SCATTERED TO NUMEROUS THUNDERSTORMS ARE EXPECTED ACROSS NORTH AND
CENTRAL GEORGIA THIS AFTERNOON AND TONIGHT. ISOLATED THUNDERSTORMS
MAY BE SEVERE ACROSS NORTHWEST GEORGIA THIS AFTERNOON AND
EVENING.

.SYNOPSIS...
HIGH PRESSURE CENTERED OVER NORTH FLORIDA AND SOUTH GEORGIA WILL
KEEP A MOIST SOUTHWESTERLY FLOW ACROSS MUCH OF NORTH AND CENTRAL
GEORGIA.

.PRIMARY HAZARDS...
THE PRIMARY HAZARDS WILL BE DAMAGING WINDS...LARGE HAIL AND CLOUD
TO GROUND LIGHTNING.

.DISCUSSION...
A LARGE UPPER TROUGH WILL DEEPEN INTO THE MID MISSISSIPPI VALLEY
THROUGH TONIGHT. THIS WILL CREATE AN AREA OF MODERATE INSTABILITY
AND STRONG SHEAR ACROSS PORTIONS OF THE SOUTHEAST...INCLUDING
NORTHWEST GEORGIA. SCATTERED TO NUMEROUS THUNDERSTORMS ARE
EXPECTED OVER MUCH OF NORTH AND CENTRAL GEORGIA BY LATE THIS
AFTERNOON AND TONIGHT. ISOLATED THUNDERSTORMS MAY BECOME SEVERE
MAINLY ALONG AND NORTH OF A LINE FROM HAMILTON TO WARRENTON THIS
AFTERNOON AND EVENING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY
THERE IS A CHANCE OF THUNDERSTORMS EACH DAY.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT REQUESTED BUT SPOTTERS ARE ENCOURAGED
TO SUBMIT REPORTS OF SEVERE WEATHER THROUGH THE WEB BY GOING TO
WEATHER.GOV/ATLANTA.

In the hours before

Special weather statement, Jun 22, 2:49 PM EDT, 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
249 PM EDT WED JUN 22 2011

GAZ052-053-066-067-221930-
249 PM EDT WED JUN 22 2011

...SIGNIFICANT WEATHER ADVISORY FOR DIME SIZED HAIL AND 45 MPH WINDS
IN TROUP...MERIWETHER...COWETA AND HEARD COUNTIES UNTIL 330 PM EDT...

AT 244 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS FROM AROUND FRANKLIN TO SMITHS CROSSROAD...
MOVING EAST AT 35 MPH.

THESE STORMS HAVE THE POTENTIAL TO PRODUCE DIME SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 45 MPH AS THEY MOVE
ACROSS TROUP...MERIWETHER...COWETA AND HEARD COUNTIES THROUGH 330 PM
EDT. SOME LOCATIONS IN THE PATH OF THESE STORMS INCLUDE
CANNONVILLE...HILLCREST...LONG CANE...ABBOTTSFORD...PIEDMONT
HEIGHTS...WARES CROSSROADS...WEST POINT...LAGRANGE...GLENN...
WARESVILLE...TEXAS...BAUGHS CROSSROADS...FRANKLIN...SMITHS CROSSROAD
AND LOUISE. HEAVY DOWNPOURS WILL CAUSE PONDING OF WATER ON ROADWAYS.

SIGNIFICANT WEATHER ADVISORIES ARE ISSUED FOR WINDS UP TO 50 MPH...
HAIL LESS THAN THE SIZE OF QUARTERS...OR SIGNIFICANT CLOUD-TO-GROUND
LIGHTNING.

&&

LAT...LON 3345 8465 3322 8454 3290 8455 3287 8519
      3328 8526
TIME...MOT...LOC 1847Z 255DEG 30KT 3323 8509 3312 8503
          3295 8503

Special weather statement, Jun 22, 2:56 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
256 PM EDT WED JUN 22 2011

GAZ031-041>044-052-053-221930-
256 PM EDT WED JUN 22 2011

...SIGNIFICANT WEATHER ADVISORY FOR DIME SIZED HAIL AND 45 MPH WINDS
IN PAULDING...CARROLL...COWETA...DOUGLAS...HARALSON...HEARD AND
FULTON COUNTIES UNTIL 330 PM EDT...

AT 253 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS FROM TALLAPOOSA TO ROOSTERVILLE...MOVING EAST AT
25 MPH.

THESE STORMS HAVE THE POTENTIAL TO PRODUCE DIME SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 45 MPH AS THEY MOVE
ACROSS PAULDING...CARROLL...COWETA...DOUGLAS...HARALSON...HEARD AND
FULTON COUNTIES THROUGH 330 PM EDT. SOME LOCATIONS IN THE PATH OF
THESE STORMS INCLUDE FROLONA...ROOSTERVILLE...EPHESUS...BLACKJACK
MOUNTAIN...TYUS...BOWDON JUNCTION...JOHN TANNER STATE PARK...
BOWDON...MOUNT ZION...WACO...TALLAPOOSA...CENTRALHATCHEE...
BUCHANAN...FELTON AND ROOPVILLE. HEAVY DOWNPOURS WILL CAUSE PONDING
OF WATER ON ROADWAYS.

SIGNIFICANT WEATHER ADVISORIES ARE ISSUED FOR WINDS UP TO 50 MPH...
HAIL LESS THAN THE SIZE OF QUARTERS...OR SIGNIFICANT CLOUD-TO-GROUND
LIGHTNING.

&&

LAT...LON 3391 8520 3390 8505 3395 8505 3395 8504
      3396 8474 3394 8472 3381 8473 3380 8470
      3345 8466 3328 8526 3379 8538 3383 8537
      3390 8538
TIME...MOT...LOC 1856Z 251DEG 21KT 3375 8521 3365 8513
          3341 8514

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 8:07 PM EDT	Special Weather Statement	FFC	Taliaferro	38 min
Jun 21, 8:17 PM EDT	Special Weather Statement	FFC	Bleckley, Pulaski	43 min
Jun 21, 8:21 PM EDT	Special Weather Statement	FFC	Hancock	39 min
Jun 21, 8:56 PM EDT	Special Weather Statement	FFC	Laurens	49 min
Jun 21, 9:05 PM EDT	Special Weather Statement	FFC	Wilkinson	40 min
Jun 21, 9:34 PM EDT	Special Weather Statement	FFC	Washington	41 min
Jun 21, 10:53 PM EDT	Special Weather Statement	FFC	Jefferson	37 min
Jun 21, 11:54 PM EDT	Special Weather Statement	FFC	Houston	51 min
Jun 22, 2:49 PM EDT	Special Weather Statement	FFC	Coweta, Heard, Meriwether, Troup	41 min
Jun 22, 3:27 PM EDT	Special Weather Statement	FFC	Carroll, Chattahoochee, Coweta, Douglas, Fayette, Harris and 5 more	33 min
Jun 22, 3:51 PM EDT	Special Weather Statement	FFC	Clayton, Cobb, DeKalb, Douglas, Fayette, Fulton and 4 more	39 min
Jun 22, 4:13 PM EDT	Severe Thunderstorm Warning	FFC	Clayton, DeKalb, Forsyth, Fulton, Gwinnett, Henry and 4 more	62 min
Jun 22, 4:30 PM EDT	Special Weather Statement	FFC	Cherokee, Dawson	45 min
Jun 22, 4:41 PM EDT	Special Weather Statement	FFC	Fannin	34 min
Jun 22, 4:44 PM EDT	Special Weather Statement	FFC	Lamar, Monroe, Upson	46 min
Jun 22, 4:51 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Barrow, Clarke, Gwinnett, Hall, Jackson and 3 more	54 min
Jun 22, 5:11 PM EDT	Special Weather Statement	FFC	Lumpkin, Union	49 min
Jun 22, 5:22 PM EDT	Special Weather Statement	FFC	Baldwin, Bibb, Houston, Jasper, Jones, Peach and 2 more	38 min
Jun 22, 5:37 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Clarke, Hall, Jackson, Madison, Oconee and 1 more	38 min
Jun 22, 6:18 PM EDT	Special Weather Statement	FFC	Dade	27 min
Jun 22, 6:20 PM EDT	Special Weather Statement	FFC	Madison, Oglethorpe	40 min
Jun 22, 6:36 PM EDT	Special Weather Statement	FFC	Carroll, Haralson, Heard	39 min
Jun 22, 6:58 PM EDT	Severe Thunderstorm Warning	FFC	Carroll, Haralson, Heard	47 min
Jun 22, 7:11 PM EDT	Special Weather Statement	FFC	Haralson, Polk	64 min
Jun 22, 7:21 PM EDT	Severe Thunderstorm Warning	FFC	Floyd, Haralson, Polk	43 min
Jun 22, 7:48 PM EDT	Special Weather Statement	FFC	Cobb, Douglas	42 min
Jun 22, 7:56 PM EDT	Special Weather Statement	FFC	Bartow, Gordon, Pickens	49 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.