Alert archive / Georgia / Special Weather Statements in 2011

Special Weather Statement, NWS Atlanta, GA

September 27, 2011Crawford County, Georgia

NWS Atlanta, GA issued this special weather statement at Sep 27, 2011, 2:39 PM EDT for Crawford County, Georgia. It was in force for 36 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
Sep 27, 2011, 2:39 PM EDT (18:39 UTC)
Expired
Sep 27, 2011, 3:15 PM EDT
In force
36 min
Issued by
NWS Atlanta, GA

County Crawford County, GA

The radar

The Atlanta radar (KFFC), 78 km from the middle of the area, began a volume at 18:43 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, 6.7 hours before the alert went out and 76 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 2011-09-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1343 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 2011-09-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 107 square meters per square second.193958Sfc1 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
1343 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
839 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
107 m²/s²
0-3 km storm-relative helicity
119 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.9

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 Sep 27, 1:51 PM EDT, 48 minutes earlier.

Area forecast discussion, Sep 27, 1:51 PM EDT, 48 minutes before
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Hazardous weather outlook, Sep 27, 11:30 AM EDT, 3 hours 9 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1130 AM EDT TUE SEP 27 2011

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-281530-
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-
1130 AM EDT TUE SEP 27 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH AND CENTRAL GEORGIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT
ISOLATED TO SCATTERED THUNDERSTORMS POSSIBLE TODAY ACROSS NORTH
AND CENTRAL GEORGIA.

.SYNOPSIS...
A FRONTAL BOUNDARY WILL PUSH THROUGH NORTH CENTRAL GEORGIA TODAY
AND SLOWLY MEANDER SOUTHWARD OVER THE NEXT FEW DAYS.

.PRIMARY HAZARDS...
THE PRIMARY HAZARDS WILL BE OCCASIONAL CLOUD TO GROUND LIGHTNING
AND HEAVY RAIN OVER PORTIONS OF NORTH AND CENTRAL GEORGIA TODAY.

.DISCUSSION...
A FRONTAL BOUNDARY HAS PUSHED INTO THE PEACH STATE...LOCATED
ALONG A LINE FROM ATHENS TO LAGRANGE. BEST MOISTURE AND
INSTABILITIES WILL REMAIN OVER CENTRAL GEORGIA...AND MOST LIKELY
AREA FOR DEVELOPMENT OF THUNDERSTORMS WILL BE SOUTH OF A LINE FROM
CARROLLTON TO WARRENTON. ISOLATED THUNDERSTORMS ARE POSSIBLE NORTH
OF THIS LINE...BUT GENERALLY SOUTH OF A ROME TO ATHENS LINE. WITH
CAPE VALUES BETWEEN 1500 AND 2000 J/KG ACROSS CENTRAL
GEORGIA...AND LIFTED INDEX VALUES BETWEEN -2 AND -4...A FEW STORMS
MAY BE STRONG...AND ISOLATED SEVERE STORMS ARE POSSIBLE.
POTENTIALLY HEAVY RAIN IS POSSIBLE WITH THUNDERSTORMS...AND ALTHOUGH
MOST AREAS SHOULD BE ABLE TO HANDLE 2 TO 3 INCHES OR
MORE...LOCALIZED FLOODING MAY OCCUR.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
THERE IS A CHANCE OF THUNDERSTORMS WEDNESDAY AND EARLY THURSDAY.

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

10

In the hours before

Special weather statement, Sep 27, 2:35 PM EDT, 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
235 PM EDT TUE SEP 27 2011

GAZ091>093-104-105-271900-
235 PM EDT TUE SEP 27 2011

...SIGNIFICANT WEATHER ADVISORY FOR PEA SIZED HAIL AND 40 MPH WINDS
IN SUMTER...SCHLEY...MARION...MACON AND DOOLY COUNTIES UNTIL 300 PM
EDT...

AT 230 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER WALLS CROSSING...MOVING EAST AT 20 MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE PEA SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 40 MPH AS IT MOVES ACROSS
SUMTER...SCHLEY...MARION...MACON AND DOOLY COUNTIES THROUGH 300 PM
EDT. SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE WALLS
CROSSING...PUTNAM...DOYLE...FRIENDSHIP...SHILOH...CONCORD...
ELLAVILLE...MURRAYS CROSSROADS...LA CROSSE...BUMPHEAD...PENNINGTON...
ANDERSONVILLE...CLEARVIEW...WHITEWATER STATE PARK AND ANDERSONVILLE
NATIONAL HISTORIC SITE. HEAVY DOWNPOURS WILL CAUSE PONDING OF WATER
ON ROADWAYS.

&&

LAT...LON 3237 8405 3215 8401 3211 8443 3229 8446
TIME...MOT...LOC 1834Z 261DEG 18KT 3222 8433

16
Special weather statement, Sep 27, 2:39 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
239 PM EDT TUE SEP 27 2011

GAZ069-079>081-271915-
239 PM EDT TUE SEP 27 2011

...SIGNIFICANT WEATHER ADVISORY FOR PEA SIZED HAIL AND 40 MPH WINDS
IN TALBOT...UPSON...TAYLOR AND CRAWFORD COUNTIES UNTIL 315 PM EDT...

AT 236 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER CARSONVILLE...MOVING EAST AT 20 MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE PEA SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 40 MPH AS IT MOVES ACROSS
TALBOT...UPSON...TAYLOR AND CRAWFORD COUNTIES THROUGH 315 PM EDT.
SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE WESLEY CHURCH...
CARSONVILLE...PRATTSBURG...SALEM...FICKLING MILL...HORNS...MUSELLA...
KNOXVILLE AND ROBERTA. HEAVY DOWNPOURS WILL CAUSE PONDING OF WATER ON
ROADWAYS.

&&

LAT...LON 3278 8440 3285 8398 3263 8395 3260 8437
TIME...MOT...LOC 1838Z 262DEG 19KT 3270 8428

16

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 26, 8:18 PM EDTSpecial Weather StatementFFCWhite27 min
Sep 27, 2:35 PM EDTSpecial Weather StatementFFCMacon, Schley25 min
Sep 27, 3:05 PM EDTSpecial Weather StatementFFCWilkinson25 min
Sep 27, 3:34 PM EDTSpecial Weather StatementFFCWashington26 min
Sep 27, 3:42 PM EDTSevere Thunderstorm WarningFFCBibb, Jones, Twiggs48 min
Sep 27, 3:56 PM EDTSevere Thunderstorm WarningFFCTwiggs34 min
Sep 27, 4:14 PM EDTSpecial Weather StatementFFCWilkinson31 min
Sep 27, 4:27 PM EDTSevere Thunderstorm WarningFFCHancock, Washington33 min
Sep 27, 4:37 PM EDTSevere Thunderstorm WarningFFCButts, Jasper, Newton23 min
Sep 27, 4:42 PM EDTSevere Thunderstorm WarningFFCEmanuel, Jefferson48 min
Sep 27, 4:50 PM EDTSpecial Weather StatementFFCJohnson25 min
Sep 27, 4:53 PM EDTSpecial Weather StatementFFCGlascock22 min
Sep 27, 4:59 PM EDTSpecial Weather StatementFFCButts, Jasper31 min
Sep 27, 5:09 PM EDTSevere Thunderstorm WarningFFCEmanuel36 min
Sep 27, 5:34 PM EDTSpecial Weather StatementFFCMorgan, Oconee26 min
Sep 27, 5:37 PM EDTSpecial Weather StatementFFCButts23 min
Sep 27, 6:29 PM EDTSpecial Weather StatementFFCOglethorpe31 min
Sep 27, 7:24 PM EDTSpecial Weather StatementFFCWilkes36 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.