Alert archive / Georgia / Special Weather Statements in 2013

Special Weather Statement, NWS Atlanta, GA

September 2, 2013Haralson County, Georgia

NWS Atlanta, GA issued this special weather statement at Sep 2, 2013, 5:19 AM EDT for Haralson County, Georgia. It was in force for 26 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 2, 2013, 5:19 AM EDT (09:19 UTC)
Expired: Sep 2, 2013, 5:45 AM EDT
In force: 26 min
Issued by: NWS Atlanta, GA

County Haralson County, GA

The radar

The Atlanta radar (KFFC), 60 km from the middle of the area, began a volume at 09:19 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 00:00Z, 9.3 hours before the alert went out and 63 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: 1032 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 889 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 76 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 2, 4:08 AM EDT, 1 hour 11 minutes earlier.

Area forecast discussion, Sep 2, 4:08 AM EDT, 1 hour 11 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
408 AM EDT MON SEP 2 2013

.SHORT TERM /TODAY THROUGH TUESDAY/...
SHORT TERM BEGINS WITH UPPER TROUGH IN PLACE OVER THE EASTERN
PORTION OF THE COUNTRY...WITH A STRONG SHORTWAVE ACROSS SOUTHERN
ONTARIO THAT IS JUST ABOUT CLOSED OFF. THE ASSOCIATED SURFACE LOW
WILL BE OCCLUDING TODAY AS THE FRONT /CURRENTLY STRETCHING FROM THE
GREAT LAKES TO THE OZARKS AND SOUTHERN PLAINS/ SHIFTS EAST. THE
SOUTHERN EDGE OF THE FRONT WILL LOSE SOME OF ITS OOMPH TODAY AS THE
SURFACE LOW CONTINUES TO OCCLUDE...BUT WILL STILL BE STRONG ENOUGH
TO PUSH INTO THE SOUTHEAST BY TUESDAY MORNING WITH DRIER AIR
FILTERING IN BEHIND IT. SYNOPTIC MODELS IN FAIRLY GOOD AGREEMENT IN
THE MASS FIELDS THOUGH OF COURSE THERE ARE MINOR DIFFERENCES IN
DETAILS. AS A NOTE...HIRES MODELS NOT HANDLING CURRENT CONVECTION
VERY WELL /ALL WRF MEMBERS HAD CONVECTION ONGOING ACROSS CENTRAL
GEORGIA AT AFD TIME WHERE THERE IS NONE/.

AMPLE SURFACE MOISTURE REMAINS IN PLACE TODAY AND ONCE AGAIN
TEMPERATURES ARE EXPECTED TO CLIMB TO NEAR AND POSSIBLY JUST ABOVE
SEASONAL NORMALS...LEADING TO CAPE VALUES BETWEEN 1500-2000 J/KG
THIS AFTERNOON. DPVA ASSOCIATED WITH THE INTERMITTENT...SMALL
AMPLITUDE WAVES IN THE NORTHWEST FLOW ALOFT CONTINUE TO TRIGGER
CONVECTIVE DEVELOPMENT AHEAD OF THE FRONT WITH ONE CONVECTIVE
COMPLEX NEAR THE TENNESSEE/MISSISSIPPI/ALABAMA CORNER AT AFD TIME.
SO BETWEEN LEFTOVER SURFACE BOUNDARIES FROM YESTERDAY...INCREASING
INSTABILITY...AND THE APPROACHING FRONT...HAVE KEPT TREND OF LIKELY
POPS NORTH TODAY AND HIGH CHANCE ELSEWHERE. 00Z KFFC SOUNDING HAD PW
VALUE OF 1.95...BETWEEN 75TH AND 99TH PERCENTILE FOR THIS TIME OF
YEAR...AND BUFR SOUNDINGS KEEP PLENTIFUL MOISTURE THROUGH THE COLUMN
THROUGH MONDAY /NAM HAS PW VALUES INCREASING TO OVER 2 INCHES MONDAY
WHEREAS GFS KEEPS PW AROUND 1.75/. AS WITH THE PAST FEW DAYS...
LIGHTNING AND HEAVY RAIN WILL BE THE MAIN THREATS TODAY BUT AN
ISOLATED DOWNBURST CANNOT BE RULED OUT. LUCKILY THERE WILL BE ENOUGH
UNIDIRECTIONAL FLOW THROUGH THE COLUMN TO KEEP STORMS MOVING AND
THUS THE FLASH FLOODING THREAT TO A MINIMUM BUT SOME AREAS COULD
STILL SEE A GOOD DRENCHING.

FOR TUESDAY...SYNOPTIC MODELS INCREASE CAPES EVEN MORE THAN TODAY...
BUT THIS WILL BE COMPETING WITH THE LOCATION AND STRENGTH /MORE
SPECIFICALLY THE LACK THEREOF/ OF THE COLD FRONT. THE INCREASING
INSTABILITY AND PROXIMITY OF THE FRONT POINT TO AN INCREASED
POSSIBILITY OF ISOLATED SEVERE CONVECTION...BUT EVEN WITH THE FRONT
NEARBY THERE IS NO SHEAR TO SPEAK OF. DRY AIR INTRUSION ALOFT /VERY
DRY ABOVE 500MB/ WILL BE NOSING IN AS EARLY AS 15Z TUESDAY ACROSS
THE METRO AREA AND POINTS NORTH AND BY 21Z ACROSS CENTRAL GEORGIA.
SO WITH ALL THAT...CONFIDENCE NOT PARTICULARLY HIGH AT THIS POINT
WITH THE TUESDAY FORECAST. FOR NOW HAVE KEPT ONLY SLIGHT CHANCE POPS
NORTH...DIMINISHING FROM THERE IN THE AFTERNOON AND EVENING...WITH
CHANCE POPS ACROSS THE METRO AREA AND POINTS SOUTH.

TOOK THE TYPICAL BIAS-ADJUSTED BLEND FOR TEMPS THROUGH THE SHORT
TERM BUT AS HAS BEEN THE CASE OVER THE WEEKEND...TEMPS WILL BE
HIGHLY DEPENDENT ON CLOUD COVER AND RAIN.

TDP

.LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/...
SURFACE BOUNDARY PUSHES INTO THE STATE EARLIER DURING THE DAY
TUESDAY AND DRIER AIR HAS SPREAD ACROSS THE NORTHERN ZONES. MODELS
AGREE THAT THE BOUNDARY STALLS SOMEWHERE ACROSS CENTRAL GEORGIA
THROUGH THURSDAY NIGHT...SO HAVE KEPT THE NORTH DRY WITH ONLY LOW
POPS FOR CENTRAL. MOISTURE BEGINS TO RETURN ON FRIDAY WITH LOW
LEVEL EASTERLY FLOW AND GENERAL EAST COAST TROUGHING ALOFT. HAVE
INCLUDED POPS ACROSS THE ENTIRE CWA FRIDAY THROUGH SUNDAY BUT
SHOWING A MAINLY DIURNAL TREND. MADE A FEW ADJUSTMENTS TO
TEMPERATURES BUT DAYTIME HIGHS SEEM TO BE NEAR NORMAL. A BIT
COOLER AT NIGHT THROUGH MUCH OF THE WEEK MAINLY NORTH.

41

&&

AVIATION...
06Z UPDATE...
SEEING SOME PATCHY MVFR FOG AT TAF TIME...THIS SHOULD INCREASE IN
COVERAGE THROUGH THE MORNING HOURS AND EXPECT LOW MVFR CIGS TO
DEVELOP AS WELL. CIGS SHOULD BEGIN LIFTING AFTER SUNRISE...WITH
TSRA CHANCES INCREASING DURING THE AFTERNOON. FOR NOW LEFT PROB30
IN BUT DEPENDING ON HOW TRENDS GO THIS MORNING MAY NEED TO
INCREASE WORDING TO PREVAILING. SOME HINTS AT MVFR CIGS AGAIN
TUESDAY MORNING BUT DRIER AIR WILL BE MOVING IN SO NOT CONFIDENT
IN THAT AND HAVE ONLY HINTED WITH BKN030 FOR ATL AT THIS TIME.
WIND SW TO W THROUGH THE PERIOD...LIGHT OVERNIGHT AND 4-8KT DURING
THE DAY...EXCEPT GUSTY IN THUNDERSTORMS.

//ATL CONFIDENCE...06Z UPDATE...
MEDIUM ON CIGS/VSBY THIS MORNING.
HIGH ON OCCURRENCE OF CONVECTION...MEDIUM ON IMPACTS TO ATL.
LOW ON CIGS TUESDAY MORNING.
HIGH ON WINDS.

TDP

&&

.PRELIMINARY POINT TEMPS/POPS...
ATHENS          90  70  90  70 /  60  40  30  10
ATLANTA         88  72  88  72 /  60  40  30  10
BLAIRSVILLE     83  66  84  63 /  60  50  20  10
CARTERSVILLE    88  70  89  66 /  70  50  20  10
COLUMBUS        91  73  91  75 /  50  30  40  20
GAINESVILLE     87  70  88  68 /  60  50  30  10
MACON           90  71  91  71 /  50  30  40  20
ROME            89  69  89  67 /  70  50  20  10
PEACHTREE CITY  88  70  88  70 /  50  40  30  10
VIDALIA         91  73  91  73 /  50  30  40  30

&&

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

SHORT TERM...TDP
LONG TERM....41
AVIATION...TDP

Hazardous weather outlook, Sep 2, 4:36 AM EDT, 43 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
436 AM EDT MON SEP 2 2013

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-030845-
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-
436 AM EDT MON SEP 2 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH AND CENTRAL GEORGIA.

.DAY ONE...TODAY AND TONIGHT...

SCATTERED TO NUMEROUS THUNDERSTORMS ARE EXPECTED ACROSS NORTH AND
CENTRAL GEORGIA THROUGH TONIGHT...WITH THE GREATEST COVERAGE
OVER NORTH GEORGIA. A FRONTAL BOUNDARY WILL BE PUSHING INTO NORTH
GEORGIA THIS AFTERNOON...IN COMBINATION WITH ENHANCED MOISTURE
AND INSTABILITY. THIS WILL ALLOW FOR STORM DEVELOPMENT.
THUNDERSTORMS WILL BE CAPABLE OF PRODUCING LOCALLY HEAVY
RAINFALL...SMALL HAIL...GUSTY WINDS AND FREQUENT LIGHTNING
STRIKES. TRAINING CELLS MAY RESULT IN LOCALIZED FLASH FLOODING
THREATS AS WELL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...
SCATTERED TO NUMEROUS THUNDERSTORMS ARE EXPECTED EACH DAY. HOWEVER
NORTH GEORGIA SHOULD BE DRY MAINLY WEDNESDAY THROUGH THURSDAY.
THUNDERSTORM CHANCES WILL INCREASE ACROSS THE ENTIRE AREA FRIDAY
INTO SATURDAY AS ANOTHER UPPER DISTURBANCE PUSHES TOWARD THE
SOUTHEAST.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED THROUGH TONIGHT.

In the hours before

Special weather statement, Sep 2, 3:56 AM EDT, 1 hour 23 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
356 AM EDT MON SEP 2 2013

GAZ030-041-020845-
356 AM EDT MON SEP 2 2013

...SIGNIFICANT WEATHER ADVISORY FOR FREQUENT LIGHTNING IN POLK AND
HARALSON COUNTIES UNTIL 445 AM EDT...

AT 352 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 7 MILES WEST OF ESOM HILL...MOVING EAST AT 20
MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE PEA SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 35 MPH AS IT MOVES ACROSS
POLK AND HARALSON COUNTIES THROUGH 445 AM EDT. SOME LOCATIONS IN THE
PATH OF THIS STORM INCLUDE ETNA...ESOM HILL...FELTON...EUBANK LAKE...
BREMEN...BUCHANAN AND ANTIOCH. HEAVY DOWNPOURS WILL CAUSE PONDING OF
WATER ON ROADWAYS.

&&

LAT...LON 3402 8542 3401 8534 3395 8505 3392 8505
      3371 8513 3380 8538
TIME...MOT...LOC 0756Z 289DEG 18KT 3394 8549

Special weather statement, Sep 2, 4:47 AM EDT, 32 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
447 AM EDT MON SEP 2 2013

GAZ030-031-041-042-020915-
447 AM EDT MON SEP 2 2013

...SIGNIFICANT WEATHER ADVISORY FOR HEAVY RAIN IN POLK...PAULDING...
CARROLL AND HARALSON COUNTIES UNTIL 515 AM EDT...

AT 442 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER EUBANK LAKE...MOVING EAST AT 25 MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE PEA SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 35 MPH AS IT MOVES ACROSS
POLK...PAULDING...CARROLL AND HARALSON COUNTIES THROUGH 515 AM EDT.
SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE EUBANK LAKE...
BUCHANAN...FELTON...ANTIOCH...YORKVILLE...DRAKETOWN...TEMPLE...
UNION...NEW GEORGIA...VILLA RICA...BROWNSVILLE AND HIRAM. HEAVY
DOWNPOURS WILL CAUSE PONDING OF WATER ON ROADWAYS.

&&

LAT...LON 3404 8541 3388 8473 3379 8473 3377 8482
      3378 8490 3370 8491 3375 8537 3403 8542
TIME...MOT...LOC 0847Z 290DEG 22KT 3387 8508

Special weather statement, Sep 2, 5:19 AM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
519 AM EDT MON SEP 2 2013

GAZ031-041>043-020945-
519 AM EDT MON SEP 2 2013

...SIGNIFICANT WEATHER ADVISORY FOR HEAVY RAIN IN PAULDING...
CARROLL...DOUGLAS AND HARALSON COUNTIES UNTIL 545 AM EDT...

AT 514 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS FROM BROWNSVILLE TO BUCHANAN...MOVING EAST AT 30
MPH.

THESE STORMS HAVE THE POTENTIAL TO PRODUCE PEA SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 35 MPH AS THEY MOVE
ACROSS PAULDING...CARROLL...DOUGLAS AND HARALSON COUNTIES THROUGH 545
AM EDT. SOME LOCATIONS IN THE PATH OF THESE STORMS INCLUDE UNION...
HIRAM...NEW GEORGIA...BUCHANAN...DRAKETOWN...BROWNSVILLE...BREMEN...
LITHIA SPRINGS...DOUGLASVILLE...LAKE VAL-DO-MAR...VILLA RICA...TEMPLE
AND WINSTON. HEAVY DOWNPOURS WILL CAUSE PONDING OF WATER ON ROADWAYS.

&&

LAT...LON 3386 8509 3391 8476 3389 8473 3380 8472
      3380 8463 3378 8461 3372 8479 3365 8507
      3381 8538 3385 8538
TIME...MOT...LOC 0919Z 292DEG 33KT 3381 8472 3378 8491
          3377 8517

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 2, 3:56 AM EDT	Special Weather Statement	FFC	Haralson	49 min
Sep 2, 4:47 AM EDT	Special Weather Statement	FFC	Haralson	28 min
Sep 2, 5:50 AM EDT	Special Weather Statement	FFC	Douglas, Haralson	25 min
Sep 2, 6:03 AM EDT	Flash Flood Warning	FFC	Haralson	6 hr
Sep 2, 6:21 AM EDT	Special Weather Statement	FFC	Douglas	24 min
Sep 2, 7:31 AM EDT	Special Weather Statement	FFC	Coweta	29 min
Sep 2, 2:11 PM EDT	Special Weather Statement	FFC	Laurens	34 min
Sep 2, 2:44 PM EDT	Special Weather Statement	FFC	Washington	31 min
Sep 2, 3:07 PM EDT	Special Weather Statement	FFC	Johnson	38 min
Sep 2, 3:11 PM EDT	Severe Thunderstorm Warning	FFC	Johnson, Washington	49 min
Sep 2, 3:41 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel, Jefferson, Johnson	49 min
Sep 2, 4:28 PM EDT	Special Weather Statement	FFC	Montgomery, Treutlen	32 min
Sep 2, 4:30 PM EDT	Special Weather Statement	FFC	Crisp	30 min
Sep 2, 5:02 PM EDT	Special Weather Statement	FFC	Crisp, Wilcox	28 min
Sep 2, 5:32 PM EDT	Special Weather Statement	FFC	Telfair, Wilcox	43 min
Sep 2, 6:12 PM EDT	Special Weather Statement	FFC	Telfair	48 min

Nearby

Special Weather Statements in Georgia, 2013 Every special weather statement in 2013

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.