Alert archive / Georgia / Special Weather Statements in 2015

Special Weather Statement, NWS Atlanta, GA

May 18, 2015Towns County, White County, Georgia

NWS Atlanta, GA issued this special weather statement at May 18, 2015, 7:17 PM EDT for Towns County, White County, Georgia. It was in force for 28 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: May 18, 2015, 7:17 PM EDT (23:17 UTC)
Expired: May 18, 2015, 7:45 PM EDT
In force: 28 min
Issued by: NWS Atlanta, GA

Counties Towns County, GA, White County, GA

The radar

The Greer radar (KGSP), 139 km from the middle of the area, began a volume at 23:18 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, 11.3 hours before the alert went out and 166 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: 133 J/kg
Mixed-layer CIN: -105 J/kg
Mixed-layer LCL: 1120 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 55 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 May 18, 2:59 PM EDT, 4 hours 18 minutes earlier.

Area forecast discussion, May 18, 2:59 PM EDT, 4 hours 18 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
259 PM EDT MON MAY 18 2015

.SHORT TERM /TONIGHT THROUGH TUESDAY NIGHT/...
SHORT WAVE MOVING NORTHEAST ACROSS AL THIS AFTERNOON IS VISIBLE ON
SATELLITE. THIS COULD CONTINUE TO ENHANCE CONVECTION ACROSS THE
FORECAST AREA THIS AFTERNOON AND EVENING. THERE SHOULD BE A GRADUAL
DIMINISHING OF COVERAGE TONIGHT...BUT AIR MASS STILL UNSTABLE ENOUGH
TO LEAVE LOW CHANCE POPS IN ALL NIGHT. UPPER RIDGE FLATTENING SOME
THROUGH THE PERIOD AND A FRONTAL BOUNDARY SHOULD DRIFT SOUTH INTO GA
BY MORNING. MODELS SEEM TO BE HOLDING ON TO THE MOISTURE A BIT
LONGER...SO HAVE KEPT POPS IN FOR THE ENTIRE FORECAST AREA THROUGH
TUESDAY. GRADUAL DRYING ACROSS THE AREA TUESDAY NIGHT EXCEPT FOR A
PORTION OF CENTRAL. GUIDANCE TEMPERATURES LOOK REASONABLE AND HAVE
STAYED CLOSE.

41

.LONG TERM /WEDNESDAY THROUGH MONDAY/...
MAINLY ONLY TWEAKS TO THE LONG TERM BASED ON THE LASTEST GUIDANCE.

BDL

PREVIOUS DISCUSSION...
LONG TERM PERIOD BEGINS WITH A DRIER AIRMASS MOVING INTO THE STATE
BEHIND THE EXITING FRONTAL SYSTEM. STILL KEEPING IN A SLIGHT
CHANCE ACROSS CENTRAL GA WED AS THERE IS STILL A BIT OF RESIDUAL
MOISTURE REMAINING ACROSS SOUTHERN PORTIO0NS OF THE CWA. THIS
DRIER AIRMASS IS SHORT LIVED AS A FEW WAVES MOVE ACROSS THE AREA
THROUGH THE WEEKEND IN THE ZONAL UPPER LEVEL FLOW. THESE WAVES ARE
ALL WEAK WITH VERY LITTLE DYNAMICS AND NOT MUCH INSTABILITY SO
WILL CONTINUE WITH SLIGHT/CHANCE POPS THROUGH DAY SEVEN WITH
ISOLATED TSRA.

01

&&

.AVIATION...
18Z UPDATE...CONVECTION WILL CONTINUE INTO THE AFTERNOON AND MAY LAST
UNTIL 00Z-02Z IN SOME LOCATIONS. THERE COULD BE ISOLATED STORMS INTO
THE OVERNIGHT BUT CHANCE TOO LOW TO PUT IN TAF. A FRONT WILL BE
DROPPING INTO NORTH GA 12Z-15Z TUESDAY WITH WINDS BECOMING MORE
NORTHWEST AROUND 10KT. CEILINGS GENERALLY VFR BUT THERE WILL BE
SOME SCT-BKN025-035 THIS AFTERNOON AND EVENING. CONVECTION DEVELOPING
AGAIN TUESDAY...BUT MAINLY ACROSS CENTRAL GA FORECAST AREA.

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

41

&&

.PRELIMINARY POINT TEMPS/POPS...
ATHENS          67  88  65  89 /  60  40  20  10
ATLANTA         69  86  67  87 /  60  40  10  10
BLAIRSVILLE     62  81  57  83 /  60  40  10   5
CARTERSVILLE    65  85  61  86 /  60  40  10  10
COLUMBUS        70  88  68  90 /  50  40  20  20
GAINESVILLE     67  85  65  86 /  60  40  10  10
MACON           67  90  66  91 /  60  40  20  30
ROME            65  85  61  86 /  60  40  10  10
PEACHTREE CITY  66  86  63  88 /  60  40  10  20
VIDALIA         69  90  70  91 /  60  50  40  30

&&

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

SHORT TERM...41
LONG TERM....BDL
AVIATION...41

Hazardous weather outlook, May 18, 10:30 AM EDT, 8 hours 47 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1030 AM EDT MON MAY 18 2015

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-191000-
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-
1030 AM EDT MON MAY 18 2015

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

.DAY ONE...THIS AFTERNOON AND TONIGHT...

SCATTERED THUNDERSTORMS ARE EXPECTED OVER NORTH AND CENTRAL GEORGIA
THROUGH TONIGHT.

WEATHER HAZARDS EXPECTED...
LOCALLY HEAVY RAIN...FREQUENT LIGHTNING AND GUSTY WINDS...WITH ANY
STRONGER STORMS. SEVERE STORMS ARE NOT EXPECTED.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

A WEAK COLD FRONT WILL BRING A CHANCE OF THUNDERSTORMS ACROSS
MUCH OF NORTH AND CENTRAL GEORGIA TUESDAY. ALTHOUGH A FEW STORMS
COULD BE STRONG WITH LOCALLY HEAVY RAIN...LIGHTNING AND
GUSTY WINDS...SEVERE STORMS ARE NOT EXPECTED AT THIS TIME. A SLIGHTLY
DRIER AIRMASS MOVES IN ACROSS THE STATE WEDNESDAY BUT WILL KEEP
IN A SLIGHT CHANCE TO A CHANCE OF STORMS THROUGH SUNDAY AS WEAK
UPPER LEVEL DISTURBANCES CONTINUE ACROSS THE REGION THROUGH THE
WEEKEND.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT.

In the hours before

Special weather statement, May 18, 6:24 PM EDT, 53 minutes before

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Special weather statement, May 18, 6:29 PM EDT, 48 minutes before

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Special weather statement, May 18, 6:42 PM EDT, 35 minutes before

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Special weather statement, May 18, 6:46 PM EDT, 31 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
646 PM EDT MON MAY 18 2015

GAZ046-048-054-055-057-058-182315-
HENRY GA-NEWTON GA-CLAYTON GA-ROCKDALE GA-BUTTS GA-FAYETTE GA-
646 PM EDT MON MAY 18 2015

...SIGNIFICANT WEATHER ADVISORY FOR 45 MPH WINDS...FREQUENT
LIGHTNING...AND HEAVY RAINFALL IN HENRY...NEWTON...
CLAYTON...ROCKDALE...BUTTS AND FAYETTE COUNTIES UNTIL 715 PM EDT...

AT 644 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR STOCKBRIDGE...OR NEAR JONESBORO...MOVING
EAST AT 30 MPH.

WIND GUSTS OF 45 MPH...HEAVY RAINFALL...AND FREQUENT LIGHTNING ARE
LIKELY AS THESE STORMS MOVE ACROSS PORTIONS OF HENRY...NEWTON...
CLAYTON...ROCKDALE...BUTTS AND FAYETTE COUNTIES THROUGH 715 PM EDT.

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

DRIVERS SHOULD ALSO USE CAUTION AS INTENSE RAINFALL WILL REDUCE
VISIBILITIES. PONDING OF WATER ON ROADWAYS IS ALSO LIKELY.

LAT...LON 3365 8429 3350 8390 3330 8399 3344 8447
TIME...MOT...LOC 2244Z 281DEG 26KT 3352 8428

Special weather statement, May 18, 6:51 PM EDT, 26 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
651 PM EDT MON MAY 18 2015

GAZ091-102-103-182315-
WEBSTER GA-MARION GA-STEWART GA-
651 PM EDT MON MAY 18 2015

...SIGNIFICANT WEATHER ADVISORY FOR DIME SIZED HAIL AND 40 MPH WINDS
IN WEBSTER...MARION AND STEWART COUNTIES UNTIL 715 PM EDT...

AT 650 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS EXTENDING FROM NORTHWEST OF PRESTON TO
RICHLAND TO NEAR LUMPKIN...AND MOVING NORTHEAST AT 25 MPH.

THESE STORMS HAVE THE POTENTIAL TO PRODUCE DIME SIZED SIZED HAIL...
FREQUENT CLOUD TO GROUND LIGHTNING...VERY HEAVY RAIN AND WIND GUSTS
TO 40 MPH AS THEY MOVE ACROSS WEBSTER...MARION AND STEWART COUNTIES
THROUGH 715 PM EDT.

SOME LOCATIONS IN THE PATH OF THESE STORMS INCLUDE LUMPKIN...BUENA
VISTA...PRESTON...RICHLAND...PUTNAM...SEMINOLE...CHURCH HILL...
DOYLE...WESTVILLE...BROOKLYN...KIMBROUGH...DUMAS AND DRANEVILLE.

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

LAT...LON 3194 8487 3213 8477 3223 8468 3223 8466
      3226 8466 3239 8439 3230 8439 3229 8441
      3223 8441 3223 8443 3202 8444
TIME...MOT...LOC 2250Z 238DEG 22KT 3219 8464 3210 8468 3203 8476

Special weather statement, May 18, 7:17 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
717 PM EDT MON MAY 18 2015

GAZ009-016-023-182345-
TOWNS GA-WHITE GA-HALL GA-
717 PM EDT MON MAY 18 2015

...SIGNIFICANT WEATHER ADVISORY FOR 40 MPH WINDS IN TOWNS...WHITE AND
HALL COUNTIES UNTIL 745 PM EDT...

AT 716 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR YOUNG
HARRIS TO NEAR CLERMONT...AND MOVING EAST AT 20 MPH.

WIND GUSTS OF 40 MPH...OCCASIONAL LIGHTNING...AND HEAVY RAINFALL ARE
LIKELY AS THESE STORMS MOVE ACROSS TOWNS... WHITE AND HALL COUNTIES
THROUGH 745 PM EDT.

SOME LOCATIONS IN THE PATH OF THESE STORMS INCLUDE
CLEVELAND...HIAWASSEE...LULA...YOUNG HARRIS...CLERMONT...HELEN...
UNICOI STATE PARK...PLUM ORCHARD GAP SHELTER...SAUTEE...MOSSY
CREEK...SMITHGALL WOODS CONSERVATION ARE...LEAF...ANNA RUBY FALLS...
CAMP COLEMAN LAKE...QUALATCHEE LAKE...MACEDONIA...WHITLEY GAP
SHELTER...MOUNTAIN SCENE...BLUE MOUNTAIN SHELTER AND ROBERTSTOWN.

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

LAT...LON 3499 8355 3491 8360 3488 8366 3480 8368
      3476 8363 3465 8366 3455 8362 3451 8367
      3443 8362 3439 8366 3437 8384 3453 8383
      3455 8386 3469 8387 3474 8382 3478 8383
      3480 8378 3491 8381 3492 8388 3499 8388
TIME...MOT...LOC 2316Z 275DEG 16KT 3497 8384 3441 8383

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 12:57 PM EDT	Special Weather Statement	FFC	Clayton, Cobb, DeKalb, Fulton	33 min
May 18, 1:50 PM EDT	Special Weather Statement	FFC	Spalding	25 min
May 18, 2:01 PM EDT	Special Weather Statement	FFC	DeKalb, Rockdale	29 min
May 18, 2:28 PM EDT	Special Weather Statement	FFC	Jones	32 min
May 18, 2:46 PM EDT	Special Weather Statement	FFC	Morgan, Walton	29 min
May 18, 2:55 PM EDT	Special Weather Statement	FFC	Jasper, Newton, Putnam	35 min
May 18, 3:12 PM EDT	Special Weather Statement	FFC	Dade	33 min
May 18, 3:27 PM EDT	Special Weather Statement	FFC	Morgan, Oconee	33 min
May 18, 4:15 PM EDT	Special Weather Statement	FFC	Cobb	30 min
May 18, 4:21 PM EDT	Severe Thunderstorm Warning	FFC	Cobb	24 min
May 18, 4:38 PM EDT	Special Weather Statement	FFC	Wilkes	22 min
May 18, 4:38 PM EDT	Severe Thunderstorm Warning	FFC	Cobb, Fulton	37 min
May 18, 4:59 PM EDT	Special Weather Statement	FFC	Wilcox	46 min
May 18, 5:13 PM EDT	Special Weather Statement	FFC	DeKalb, Gwinnett	32 min
May 18, 5:39 PM EDT	Special Weather Statement	FFC	Marion	36 min
May 18, 5:40 PM EDT	Special Weather Statement	FFC	Clayton, DeKalb	35 min
May 18, 5:44 PM EDT	Special Weather Statement	FFC	Wilcox	61 min
May 18, 5:48 PM EDT	Special Weather Statement	FFC	Johnson	27 min
May 18, 5:49 PM EDT	Special Weather Statement	FFC	Cherokee, Dawson, Fannin, Gilmer, Lumpkin	41 min
May 18, 6:13 PM EDT	Special Weather Statement	FFC	Clayton, DeKalb, Fayette, Henry, Rockdale	32 min
May 18, 6:24 PM EDT	Special Weather Statement	FFC	Emanuel	51 min
May 18, 6:29 PM EDT	Special Weather Statement	FFC	Lumpkin, Union, White	46 min
May 18, 6:42 PM EDT	Special Weather Statement	FFC	Newton, Rockdale	33 min
May 18, 6:46 PM EDT	Special Weather Statement	FFC	Henry	29 min
May 18, 6:51 PM EDT	Special Weather Statement	FFC	Webster	24 min
May 18, 7:18 PM EDT	Special Weather Statement	FFC	Webster	27 min
May 18, 7:28 PM EDT	Special Weather Statement	FFC	Henry, Spalding	32 min

Nearby

Special Weather Statements in Georgia, 2015 Every special weather statement in 2015

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.