Severe Thunderstorm Warning 227, NWS Atlanta, GA

000 
WWUS52 KFFC 251925
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
325 PM EDT THU MAY 25 2006

GAC123-251945-
/O.CON.KFFC.SV.W.0227.000000T0000Z-060525T1945Z/
GILMER GA-
325 PM EDT THU MAY 25 2006

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR GILMER COUNTY...

AT 320 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZED HAIL...AND DAMAGING WINDS UP TO 60 MPH.  THESE STORMS WERE 
LOCATED ALONG A LINE EXTENDING FROM MARION TO CHERRY LOG...MOVING 
EAST AT 35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PISGAH.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.

LAT...LON 3481 8459 3456 8464 3457 8424 3477 8429

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
253 PM EDT THU MAY 25 2006

.SHORT TERM...(TONIGHT THROUGH SATURDAY NIGHT)
OUTFLOW ASSOCIATED WITH A MCS THAT MOVED THROUGH THE TENNESSEE
VALLEY THIS MORNING CONTINUES TO PUSH THROUGH NORTH GEORGIA.
SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP ALONG THIS
BOUNDARY THROUGH THIS EVENING AS IT CONTINUES TO PUSH ACROSS
NORTHERN GEORGIA. THESE STORMS HAVE THE POTENTIAL TO BECOME SEVERE
WITH DEW POINTS CONTINUING TO INCREASE ACROSS NORTH GEORGIA. THESE
STORMS SHOULD DISSIPATE SHORTLY AFTER SUNSET AS CONVECTIVE
TEMPERATURES COOL. FRIDAY THERE IS A CHANCE FOR SHOWERS AND
THUNDERSTORMS ACROSS THE ENTIRE COUNTY WARNING AREA AS THE SOUTHERN
EDGE OF THE FRONT BRUSHES ACROSS NORTHERN GEORGIA. THE MOST LIKELY
AREA FOR CONVECTION FRIDAY AFTERNOON WILL BE ACROSS NORTH GEORGIA.
THE GFS DEVELOPS A MCS OVER NORTHERN GEORGIA LATE FRIDAY AND PUSHED
IT ACROSS INTO CENTRAL GEORGIA BY 6Z ON SATURDAY.  I HAVE NOT
COMPLETELY BOUGHT INTO THIS AND HAVE CHOSEN INSTEAD TO GO WITH 30-40
POPS AS THIS SYSTEM PUSHES THROUGH. THE NAM IS NOT NEARLY AS
AGGRESSIVE WITH THIS SYSTEM AND KEEPS MOST OF THE MOISTURE ACROSS
NORTH GEORGIA WITH THE SYSTEM DISSIPATING ACROSS SOUTHERN GEORGIA.
THIS WILL BE THE MAIN AREA OF CONCERN TO WATCH THROUGH THE SHORT
TERM. SATURDAY MORNING THERE MAY BE A FEW LINGERING SHOWERS AND
THUNDERSTORMS ACROSS THE SOUTHWEST ASSOCIATED WITH THE PREVIOUS
SYSTEM CONTINUING TO PUSH SOUTHWARD WHERE THE GFS STALLS THIS SYSTEM
OUT. SATURDAY WILL BRING SLIGHT CHANCE POPS ACROSS THE CWA WITH
TYPICAL AFTERNOON ISOLATED SHOWERS AND THUNDERSTORMS POSSIBLE
THROUGH SATURDAY EVENING. HIGH TEMPS ACROSS NORTH GEORGIA WILL
CONTINUE TO PUSH INTO THE MID TO UPPER 80S WITH LOWER 90S ACROSS
CENTRAL GEORGIA. LOWS WILL BE IN THE MID TO UPPER 60S ACROSS THE CWA.

.LONG TERM...(SUNDAY THROUGH THURSDAY)
TYPICAL SUMMER AFTERNOON/EVENING SHOWER AND THUNDERSTORMS WILL
CONTINUE TO BE POSSIBLE ACROSS THE CWA THROUGH THE LONG TERM.
DAYTIME HEATING WILL ALLOW FOR ISOLATED SHOWERS AND THUNDERSTORMS TO
DEVELOP. GFS DOES NOT DEPICT VERY HIGH RH VALUES UNTIL THE END OF
LONGTERM AS UPPER LEVEL HIGH REMAINS OVER THE GULF OF MEXICO THROUGH
THE LONG TERM. AS UPPER LEVEL HIGH BEGINS TO PUSH OFF TOWARDS
FLORIDA LATE THURSDAY RH VALUES INCREASE ACROSS GEORGIA. ONLY
CARRYING 30 POPS AS IT APPROACHES THE END OF THE FORECAST PERIOD.

&&

.PRELIMINARY POINT TEMPS/POPS...
ATLANTA         68  86  68  87 /  20  20  30  20
ATHENS          66  87  66  91 /  20  20  30  20
GAINESVILLE     67  85  65  88 /  30  30  30  20
ROME            66  90  65  92 /  30  30  30  20
COLUMBUS        69  94  70  91 /  10  20  40  20
MACON           67  91  67  92 /  10  20  40  20

&&

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

22

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
936 AM EDT THU MAY 25 2006

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-261000-
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-
936 AM EDT THU MAY 25 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH AND CENTRAL GEORGIA.

.DAY ONE...TODAY AND TONIGHT
ISOLATED SEVERE THUNDERSTORMS POSSIBLE TODAY AND TONIGHT ACROSS
EXTREME NORTH GEORGIA.

.SYNOPSIS...
UPPER LEVEL SYSTEM MOVING SOUTHEAST INTO OHIO VALLEY WILL RESULT
IN INCREASING SOUTHWESTERLY FLOW AND MOISTURE OVER NORTH AND CENTRAL
GEORGIA THROUGH TONIGHT.

.PRIMARY HAZARDS...
THE PRIMARY HAZARD FROM ANY THUNDERSTORMS WILL BE LARGE HAIL AND
DAMAGING WINDS IN ADDITION TO LIGHTNING. FOR TODAY AND THIS
EVENING...THE THREAT FOR ISOLATED SEVERE THUNDERSTORMS SHOULD BE
CONFINED TO AREAS NORTH OF A LINE FROM ROME TO GAINESVILLE.

.DISCUSSION...
A FRONT STALLED ACROSS SOUTH GEORGIA FORMS A BOUNDARY BETWEEN VERY
MOIST AIR WITH DEW POINTS IN THE LOW 70S TO MUCH DRIER AIR WITH
DEW POINTS IN THE 50S AND LOW 60S ACROSS NORTH AND CENTRAL GEORGIA.
THIS FRONT WILL SLOWLY RETURN NORTH THROUGH FRIDAY AND EVENTUALLY
WASH OUT. MEANWHILE...THE TAIL END OF AN UPPER LOW MOVING THROUGH
THE OHIO VALLEY WITH SWEEP ACROSS NORTH GEORGIA  TODAY AND
OVERNIGHT. A SECONDARY SHORT WAVE WILL MOVE ACROSS THE AREA FROM
THE NORTHWEST FRIDAY. LOW AND MID-LEVEL MOISTURE WILL BE ON THE
INCREASE ACROSS THE REGION TODAY AS THIS PATTERN EVOLVES. A
MARKEDLY MORE UNSTABLE AIR MASS WILL BE NOTED ACROSS NORTH
GEORGIA...ESPECIALLY THE NORTHWEST BY THIS AFTERNOON WITH CAPES IN
EXCESS OF 1500 AND LIFTED INDICES AS LOW AS -6 IN THE EXTREME
NORTH PORTION OF THE STATE AS TEMPERATURES APPROACH THE
CONVECTIVE TEMPERATURE OF 90 DEGREES. ALTHOUGH UPPER DYNAMICS ARE
WEAK...THE INSTABILITY COMBINED WITH INCREASING MOISTURE AND THE
WEAK UPPER TROUGH WILL BE SUFFICIENT FOR ISOLATED SEVERE
THUNDERSTORM DEVELOPMENT IN THE EXTREME NORTH. CONVECTION MAY
CONTINUE OVERNIGHT...ALBEIT IN A WEAKENING STATE...TOWARD ATLANTA
AND ATHENS AFTER MIDNIGHT BEFORE DISSIPATING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY
SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS NORTH AND CENTRAL
GEORGIA FRIDAY AS A SECONDARY AND SLIGHTLY STRONGER UPPER TROUGH
MOVES THROUGH THE AREA FROM THE NORTHWEST. DESPITE WEAK
DYNAMICS...A VERY UNSTABLE AIR MASS WILL SUPPORT THE POTENTIAL FOR
A FEW OF THESE THUNDERSTORMS TO BECOME SEVERE. FOR THE PERIOD
SATURDAY THROUGH WEDNESDAY...A TYPICAL SUMMERTIME PATTERN WILL BE
IN PLACE AND SUPPORT ISOLATED TO SCATTERED MAINLY AFTERNOON AND
EVENING THUNDERSTORMS AREAWIDE.

.SPOTTER INFORMATION STATEMENT...
SPOTTERS SHOULD REMAIN ALERT FOR POSSIBLE ACTIVATION ACROSS NORTH
GEORGIA THIS AFTERNOON OR EVENING. EMERGENCY MANAGERS SHOULD
MONITOR THE SITUATION.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
117 PM EDT THU MAY 25 2006

GAZ006-008-009-251815-
117 PM EDT THU MAY 25 2006

...SIGNIFICANT WEATHER ALERT FOR FREQUENT LIGHTNING...SMALL HAIL AND
45 MPH WINDS IN UNION...TOWNS AND FANNIN COUNTIES UNTIL 215 PM EDT...

AT 117 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A A
CLUSTER OF STRONG THUNDERSTORMS NEAR HURST IN FANNIN COUNTY...AND
MOVING EAST AT 25 MPH.

THESE STORMS HAVE THE POTENTIAL TO PRODUCE PEA SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 45 MPH AS THEY MOVE
ACROSS FANNIN...UNION AND TOWNS COUNTIES. SOME LOCATIONS IN THE PATH
OF THESE STORMS INCLUDE MORGANTON...BLAIRSVILLE...BRASSTOWN BALD
MOUNTAIN...AND PRESLEY. BRIEF HEAVY DOWNPOURS MAY ALSO CAUSE PONDING
OF WATER ON ROADWAYS.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
125 PM EDT THU MAY 25 2006

GAZ005-251745-
125 PM EDT THU MAY 25 2006

...SIGNIFICANT WEATHER ALERT FOR FREQUENT LIGHTNING...SMALL HAIL AND
45 MPH WINDS IN MURRAY COUNTY UNTIL 145 PM EDT...

AT 125 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER CRANDALL...MOVING EAST AT 35 MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE PEA SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 45 MPH AS THE STORM
MOVES EASTWARD ACROSS MAINLY NORTHERN MURRAY COUNTY.  BRIEF HEAVY
DOWNPOURS MAY ALSO CAUSE PONDING OF WATER ON ROADWAYS.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
217 PM EDT THU MAY 25 2006

GAZ006-008-015-016-251915-
217 PM EDT THU MAY 25 2006

...SIGNIFICANT WEATHER ALERT FOR PEA SIZED HAIL IN LUMPKIN...WHITE...
UNION AND FANNIN COUNTIES UNTIL 315 PM EDT...

AT 213 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SCATTERED STRONG THUNDERSTORMS FROM 10 MILES NORTHWEST OF HIGDON IN
FANNIN COUNTY TO NEAR DESOTO FALLS TO JUST NORTH OF HELEN
...MOVING SOUTHEAST AT 20 MPH.

THESE STORMS HAVE THE POTENTIAL TO PRODUCE HALF INCH HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 45 MPH AS THEY MOVE
ACROSS FANNIN...UNION...WHITE...AND NORTHERN LUMPKIN COUNTIES.
BRIEF HEAVY DOWNPOURS MAY CAUSE PONDING OF WATER ON ROADWAYS.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
239 PM EDT THU MAY 25 2006

GAZ034-251915-
239 PM EDT THU MAY 25 2006

...SIGNIFICANT WEATHER ALERT FOR FREQUENT LIGHTNING...SMALL HAIL AND
45 MPH WINDS IN GWINNETT COUNTY UNTIL 315 PM EDT...

AT 239 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR BUFORD AND SUGAR HILL...AND MOVING
SOUTHEAST AT 20 MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE PEA SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 45 MPH AS IT MOVES
ACROSS NORTHERN QWINNETT COUNTY. SOME LOCATIONS IN THE PATH OF THIS
STORM INCLUDE DACULA. BRIEF HEAVY DOWNPOURS MAY CAUSE PONDING OF
WATER ON ROADWAYS.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
245 PM EDT THU MAY 25 2006

GAZ023-025-035-251945-
245 PM EDT THU MAY 25 2006

...SIGNIFICANT WEATHER ALERT FOR FREQUENT LIGHTNING...SMALL HAIL AND
45 MPH WINDS IN BARROW...JACKSON AND HALL COUNTIES UNTIL 345 PM
EDT...

AT 245 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS FROM NEAR ROBERTS CROSSROADS TO NEAR
CHANDLER IN HALL COUNTY...AND MOVING SOUTHEAST AT 15 MPH.

THESE STORMS HAVE THE POTENTIAL TO PRODUCE PEA SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 45 MPH AS THEY MOVE
ACROSS SOUTHERN HALL COUNTY AND INTO JACKSON AND BARROW COUNTIES.
SOME LOCATIONS IN THE PATH OF THESE STORMS INCLUDE PENDERGRASS...
THOMPSONS MILL AND HOSCHTON. BRIEF HEAVY DOWNPOURS MAY CAUSE PONDING
OF WATER ON ROADWAYS.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
250 PM EDT THU MAY 25 2006

GAZ033-251900-
250 PM EDT THU MAY 25 2006

...SIGNIFICANT WEATHER ALERT FOR FREQUENT LIGHTNING...PEA SIZED HAIL
AND 45 MPH WINDS IN NORTH FULTON COUNTY UNTIL 315 PM EDT...

AT 250 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER ALPHARETTA...AND MOVING EAST AT 15 MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE PEA SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 45 MPH AS IT MOVES
ACROSS NORTH FULTON COUNTY. BRIEF HEAVY DOWNPOURS MAY CAUSE PONDING
OF WATER ON ROADWAYS.