Alert archive / Georgia / Special Weather Statements in 2012

Special Weather Statement, NWS Atlanta, GA

September 8, 2012Butts County, Jasper County, Georgia

NWS Atlanta, GA issued this special weather statement at Sep 8, 2012, 3:15 PM EDT for Butts County, Jasper County, Georgia. It was in force for 45 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 8, 2012, 3:15 PM EDT (19:15 UTC)
Expired
Sep 8, 2012, 4:00 PM EDT
In force
45 min
Issued by
NWS Atlanta, GA

Counties Butts County, GA, Jasper County, GA

The radar

The Atlanta radar (KFFC), 65 km from the middle of the area, began a volume at 19:16 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, 7.3 hours before the alert went out and 59 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 2012-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1245 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 2012-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
1245 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
631 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
40 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 Sep 8, 3:08 PM EDT, 7 minutes earlier.

Area forecast discussion, Sep 8, 3:08 PM EDT, 7 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
308 PM EDT SAT SEP 8 2012

.SHORT TERM /TONIGHT THROUGH SUNDAY NIGHT/...
A COLD FRONT OVER NW GA MOVES ACROSS THE AREA TONIGHT WITH AN UPPER
TROUGH/SHORT WAVE ASSOCIATED. LINE OF BROKEN CONVECTION ACROSS THE
AHN AND ATL AREAS AND S IS WHERE THE BEST CHANCES FOR STRONG STORMS
WILL BE TONIGHT AND ASSOCIATED WITH A PRE-FRONTAL TROUGH AND CAPES
IN THE 2000-3000 RANGE. THE CHANCES FOR STRONG STORMS ARE EXPECTED
TO DIMINISH QUICKLY TONIGHT WITH THE LOSS OF DAYTIME HEATING.

THE PASSAGE OF THE UPPER LEVEL TROUGH TONIGHT AND THE FIRST PART OF
SUNDAY WILL BRING CLEARING SKIES AND A COOLER AND MUCH DRIER AIRMASS
THROUGH SUNDAY NIGHT.

FORECAST LOW TEMPERATURES RUNNING NEAR TO AROUND 5 DEGREES BELOW
NORMAL TONIGHT AND 5-10 DEGREES BELOW NORMAL SUNDAY NIGHT.
HIGH TEMPERATURES RUNNING AROUND 5 DEGREES BELOW NORMAL FOR SUNDAY.

OVERALL CONFIDENCE IS MODERATE TO HIGH.

BDL

.LONG TERM /MONDAY THROUGH SATURDAY/...
MID-RANGE AND EXTENDED GUIDANCE ALL IN VERY GOOD AGREEMENT WITH
LACK OF SENSIBLE WEATHER THROUGH NEXT WEEK. SURFACE HIGH PRESSURE
WILL REMAIN THE DOMINANT WEATHER FEATURE UNDER SUBSIDENT NORTHWEST
FLOW ALOFT EARLY...WITH MIDLEVEL RIDGING BUILDING IN BY MIDWEEK.
STILL SEEING SOME DIFFERENCES IN GFS AND ECMWF REGARDING STRENGTH
AND TIMING OF NEXT SYSTEM TO AFFECT THE AREA BUT PREVIOUS FORECAST
STILL COVERS THAT UNCERTAINTY WELL. SEE PREVIOUS DISCUSSION BELOW.

TDP

PREV DISCUSSION... /ISSUED 429 AM EDT SAT SEP 8 2012/
MODELS CONTINUE TO BE IN GENERAL AGREEMENT IN KEEPING THE CWA DRY
FOR MOST OF THE LONG TERM. THE H5 TROUGH OVER THE EASTERN U.S. ON
MONDAY WILL MOVE OFF THE EASTERN COAST AS A STRONG H5 RIDGE BUILDS
OVER THE CENTRAL AND EASTERN U.S. THIS WILL ALLOW TEMPERATURES TO
MODERATE THROUGH THE WEEK. TOWARD THE END OF THE WEEK DIFFERENCES
DEVELOP BETWEEN THE GFS AND ECMWF WITH THE GFS DROPPING A
SIGNIFICANT SHORT WAVE INTO THE MIDDLE OF THE COUNTRY WHILE THE
ECMWF HOLDS A RIDGE OVER THE EASTERN U.S. WITH A MUCH WEAKER
TROUGH OVER THE CENTRAL U.S. IN EITHER CASE...THE GULF OPENS UP TO
THE CWA AND THE THREAT OF CONVECTION RE-ENTERS THE CWA SATURDAY.

17

&&

.AVIATION...
18Z UPDATE...
SHOWERS AND THUNDERSTORMS EXPECTED WITH APPROACHING FRONT
DIMINISHING TO JUST SHOWERS WITH PASSAGE. POTENTIAL FOR MVFR
CONDITIONS ASSOCIATED WITH THE SHOWERS AND STORMS THEN POTENTIAL
FOR A PERIOD OF MVFR CEILINGS TONIGHT WITH LOWER MOISTURE BEHIND
THE FRONT. SURFACE WINDS WSW BECOMING NNW AROUND 10 KTS WITH SOME
GUSTS AROUND 20.

//ATL CONFIDENCE...18Z UPDATE...
CONFIDENCE MEDIUM ON ALL ELEMENTS.

BDL

&&

.PRELIMINARY POINT TEMPS/POPS...
ATHENS          63  80  58  84 /  40   0   0   0
ATLANTA         61  79  60  83 /  40   0   0   0
BLAIRSVILLE     56  74  52  79 /  10  10   0   0
CARTERSVILLE    57  79  52  85 /  10   5   0   0
COLUMBUS        65  84  61  86 /  60   0   0   0
GAINESVILLE     61  78  59  80 /  20  10   0   0
MACON           66  83  59  87 /  70   0   0   0
ROME            58  81  52  82 /   5   5   0   0
PEACHTREE CITY  61  79  52  84 /  40   0   0   0
VIDALIA         72  86  63  87 /  60  10   0   0

&&

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

SHORT TERM...BDL
LONG TERM....TDP
AVIATION...BDL
Hazardous weather outlook, Sep 8, 4:22 AM EDT, 10 hours 53 minutes before
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In the hours before

Special weather statement, Sep 8, 1:19 PM EDT, 1 hour 56 minutes before
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Special weather statement, Sep 8, 2:00 PM EDT, 1 hour 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
200 PM EDT SAT SEP 8 2012

GAZ025-035>037-047-049-081845-
200 PM EDT SAT SEP 8 2012

...SIGNIFICANT WEATHER ADVISORY FOR 40 MPH WINDS IN WALTON...
OCONEE...MORGAN...BARROW...CLARKE AND JACKSON COUNTIES UNTIL 245 PM
EDT...

AT 154 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER MONROE...MOVING EAST AT 25 MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE SIZED HAIL...FREQUENT CLOUD
TO GROUND LIGHTNING AND WIND GUSTS TO 40 MPH AS IT MOVES ACROSS
WALTON...OCONEE...MORGAN...BARROW...CLARKE AND JACKSON COUNTIES
THROUGH 245 PM EDT. SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE
NICHOLASVILLE...MONROE...CAMPTON...BOLD SPRINGS...BETWEEN...
BETHLEHEM...PANNELL...GRATIS...MOUNT VERNON...GOOD HOPE...STATHAM...
EASTVILLE...BOGART...BEAR CREEK RESERVOIR AND NORTH HIGH SHOALS.
HEAVY DOWNPOURS WILL CAUSE PONDING OF WATER ON ROADWAYS.

&&

LAT...LON 3408 8349 3380 8334 3375 8380 3390 8382
TIME...MOT...LOC 1800Z 269DEG 22KT 3382 8370
Special weather statement, Sep 8, 2:04 PM EDT, 1 hour 11 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
204 PM EDT SAT SEP 8 2012

GAZ052>054-066-067-081845-
204 PM EDT SAT SEP 8 2012

...SIGNIFICANT WEATHER ADVISORY FOR 40 MPH WINDS IN TROUP...
MERIWETHER...COWETA...FAYETTE AND HEARD COUNTIES UNTIL 245 PM EDT...

AT 154 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS FROM ARNCO-SARGENT TO ABBOTTSFORD...MOVING EAST
AT 25 MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE FREQUENT CLOUD TO GROUND
LIGHTNING AND WIND GUSTS TO 40 MPH AS IT MOVES ACROSS
TROUP...MERIWETHER...COWETA...FAYETTE AND HEARD COUNTIES THROUGH 245
PM EDT. SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE
ABBOTTSFORD...ARNCO-SARGENT...CORINTH...HARRISONVILLE...NEWNAN...MADR
AS...HILLCREST...WARES CROSSROADS...LAGRANGE...THOMAS
CROSSROADS...HOGANSVILLE...MORELAND...GRANTVILLE...LONE OAK AND
TURIN. HEAVY DOWNPOURS WILL CAUSE PONDING OF WATER ON ROADWAYS.

THESE WIND GUSTS MAY PRODUCE MINOR DAMAGE TO TREE LIMBS AND BLOW
LIGHT...UNSECURED OBJECTS AROUND.

&&

LAT...LON 3328 8498 3346 8485 3340 8441 3325 8446
      3325 8451 3321 8450 3300 8471 3305 8523
      3311 8524
TIME...MOT...LOC 1804Z 276DEG 23KT 3337 8479 3327 8487
          3310 8511
Special weather statement, Sep 8, 2:40 PM EDT, 35 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
240 PM EDT SAT SEP 8 2012

GAZ037-038-049-050-081930-
240 PM EDT SAT SEP 8 2012

...SIGNIFICANT WEATHER ADVISORY FOR 40 MPH WINDS IN OGLETHORPE...
OCONEE...MORGAN AND GREENE COUNTIES UNTIL 330 PM EDT...

AT 234 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER SALEM...MOVING EAST AT 20 MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE FREQUENT CLOUD TO GROUND
LIGHTNING AND WIND GUSTS TO 40 MPH AS IT MOVES ACROSS
OGLETHORPE...OCONEE...MORGAN AND GREENE COUNTIES THROUGH 330 PM EDT.
SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE SALEM...ROSE HILL...
WRAYSWOOD...GRESHAMVILLE...BARNETT SHOALS...FARMINGTON...APALACHEE...
BOSTWICK...PENFIELD...STEPHENS...HUTCHINGS...MAXEYS...CRAWFORD...WOOD
VILLE AND LEXINGTON. HEAVY DOWNPOURS WILL CAUSE PONDING OF WATER ON
ROADWAYS.

THESE WIND GUSTS MAY PRODUCE MINOR DAMAGE TO TREE LIMBS AND BLOW
LIGHT...UNSECURED OBJECTS AROUND.

&&

LAT...LON 3385 8295 3378 8299 3373 8295 3370 8300
      3365 8295 3362 8298 3363 8299 3362 8300
      3360 8299 3360 8300 3363 8362 3380 8349
      3395 8293 3385 8292
TIME...MOT...LOC 1841Z 268DEG 17KT 3374 8330
Special weather statement, Sep 8, 2:46 PM EDT, 29 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
246 PM EDT SAT SEP 8 2012

GAZ054>057-081930-
246 PM EDT SAT SEP 8 2012

...SIGNIFICANT WEATHER ADVISORY FOR 40 MPH WINDS IN SPALDING...
FAYETTE...HENRY AND CLAYTON COUNTIES UNTIL 330 PM EDT...

AT 243 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER STARRS MILL...MOVING EAST AT 20 MPH.

WIND GUSTS OF 40 MPH ARE LIKELY AS THIS STORM MOVES ACROSS
SPALDING...FAYETTE...HENRY AND CLAYTON COUNTIES THROUGH 330 PM EDT.
SOME LOCATIONS IN THE PATH OF THE STORM INCLUDE STARRS MILL...
DIGBEY...FAYETTEVILLE...BROOKS...LAKE HORTON...WOOLSEY...VAUGHN...
INMAN...BIRDIE...JW SMITH RESERVOIR...ATLANTA MOTOR SPEEDWAY...
LOVEJOY...EXPERIMENT...HIGHLAND MILLS AND GRIFFIN.

THESE WIND GUSTS MAY PRODUCE MINOR DAMAGE TO TREE LIMBS AND BLOW
LIGHT...UNSECURED OBJECTS AROUND.

&&

LAT...LON 3347 8421 3325 8420 3325 8450 3329 8452
      3333 8452 3334 8456 3336 8458 3343 8459
TIME...MOT...LOC 1846Z 267DEG 17KT 3335 8450
Special weather statement, Sep 8, 3:15 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
315 PM EDT SAT SEP 8 2012

GAZ048-056>059-082000-
315 PM EDT SAT SEP 8 2012

...SIGNIFICANT WEATHER ADVISORY FOR 50 MPH WINDS IN SPALDING...
NEWTON...BUTTS...HENRY AND JASPER COUNTIES UNTIL 400 PM EDT...

AT 311 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER LUELLA...MOVING EAST AT 40 MPH.

WIND GUSTS OF 50 MPH ARE LIKELY AS THIS STORM MOVES ACROSS
SPALDING...NEWTON...BUTTS...HENRY AND JASPER COUNTIES THROUGH 400 PM
EDT. SOME LOCATIONS IN THE PATH OF THE STORM INCLUDE LUELLA...WALKER
MILL...LOCUST GROVE...MCKIBBEN...JENKINSBURG...FINCHERVILLE...
JACKSON...WORTHVILLE...INDIAN SPRINGS STATE PARK...FLOVILLA...
STARK...TURTLE COVE...STEWART...NORTH ALCOVY AND MCELHENEYS
CROSSROADS.

THESE WIND GUSTS MAY PRODUCE MINOR DAMAGE TO TREE LIMBS AND BLOW
LIGHT...UNSECURED OBJECTS AROUND.

&&

LAT...LON 3343 8364 3318 8366 3325 8420 3344 8421
TIME...MOT...LOC 1915Z 273DEG 35KT 3333 8421

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 8, 1:19 PM EDTSpecial Weather StatementFFCMadison41 min
Sep 8, 2:00 PM EDTSpecial Weather StatementFFCOconee, Walton45 min
Sep 8, 2:04 PM EDTSpecial Weather StatementFFCCoweta, Troup41 min
Sep 8, 2:40 PM EDTSpecial Weather StatementFFCOglethorpe50 min
Sep 8, 2:46 PM EDTSpecial Weather StatementFFCFayette, Spalding44 min
Sep 8, 4:17 PM EDTSpecial Weather StatementFFCJasper, Putnam43 min
Sep 8, 4:51 PM EDTSpecial Weather StatementFFCBaldwin39 min
Sep 8, 5:03 PM EDTSpecial Weather StatementFFCJones, Twiggs, Wilkinson42 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.