Special Weather Statement, NWS Columbia, SC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE COLUMBIA SC
1011 PM EDT MON AUG 22 2011

.SYNOPSIS...
DRIER AIR WILL FILTER INTO THE FORECAST AREA TONIGHT BEHIND A WEAK
COLD FRONT. TROPICAL SYSTEM IRENE COULD BEGIN TO AFFECT THE
REGION BY THE END OF THE WORKWEEK.

&&

.NEAR TERM /UNTIL 6 AM TUESDAY MORNING/...
THE WEAK COLD FRONT EXTENDING TROUGH THE SOUTH PART OF THE
FORECAST AREA THIS EVENING WILL CONTINUE PUSHING SOUTHWARD. DRIER
WILL WILL MOVE INTO THE AREA BEHIND THE FRONT. SHOWERS IN THE
SOUTH PART SHOULD DISSIPATE TONIGHT AS THE FRONT PUSHES FARTHER
SOUTH AND DIURNAL COOLING CONTINUES.

&&

.SHORT TERM /6 AM TUESDAY MORNING THROUGH WEDNESDAY NIGHT/...
HIGH PRESSURE WILL BE NORTH OF THE FORECAST AREA THROUGH TUESDAY
NIGHT WITH THE STALLED FRONTAL BOUNDARY REMAINING JUST OFFSHORE. ON
WEDNESDAY THE HIGH PRESSURE WILL PUSH NORTHEASTWARD AND AWAY FORM
THE REGION AS HURRICANE IRENE CROSSES THE BAHAMAS. THIS WILL PUSH
THE FRONTAL BOUNDARY BACK TOWARD THE COAST AND WITH INCREASED
EASTERLY WINDS WILL SEE AN INCREASE IN THUNDERSTORM CHANCES. MODEL
SOUNDINGS ALSO INDICATE PWAT VALUES AROUND 1.75 INCHES WEDNESDAY
AFTERNOON WITH MODERATE INSTABILITY...HOWEVER WITH THE LACK OF A
TRIGGER MECHANISM FEEL CHANCE POPS APPROPRIATE. TEMPERATURES THROUGH
THE SHORT TERM WILL BE IN THE UPPER 80S FOR DAYTIME HIGHS WITH
OVERNIGHT LOWS AROUND 70.

&&

.LONG TERM /THURSDAY THROUGH MONDAY/...
MODELS ARE IN GOOD AGREEMENT THROUGH THE LONG TERM...HOWEVER THE
FORECAST TRACK OF HURRICANE IRENE WILL BE THE MAIN FOCUS. MODELS
CONTINUE MARCHING IRENE OUT OF THE BAHAMAS THURSDAY NIGHT AND TOWARD
THE SC COAST FRIDAY AND FRIDAY NIGHT. MAIN ISSUE WITH IRENE WILL BE
THE TRACK...AS MODELS ARE INDICATING A TRACK SLIGHTLY EAST OF
PREVIOUS MODEL RUNS. NHC HAS ALSO SHOWN THIS WITH THE LATEST
UPDATE. AS SUCH WILL KEEP CONSIDERABLE CLOUDINESS OVER THE
REGION WITH CHANCES OF THUNDERSTORMS THURSDAY THROUGH SATURDAY AND
CHANCES DIMINISHING SUNDAY. HAVE ALSO UPDATED WINDS IN RESPONSE TO
THE FORECAST TRACK BEING MOVED SLIGHTLY EASTWARD. TEMPERATURES
THROUGH THE LONG TERM WILL BE SLIGHTLY BELOW NORMAL DUE TO THE
EXPECTED EXTENSIVE CLOUD COVER.

&&

.AVIATION /02Z TUESDAY THROUGH SATURDAY/...
EXPECT MAINLY VFR CONDITIONS DURING THE TAF PERIOD. SOME OF THE
MOS GUIDANCE INDICATED MVFR FOG MAINLY AT AGS AND OGB.
HOWEVER...EXPECT SOME WIND BEHIND THE WEAK FRONT. MAINTAINED VFR
CONDITIONS BECAUSE OF THE MIXING AND DRY AIR ADVECTION.

EXTENDED AVIATION OUTLOOK...MVFR OR IFR CONDITIONS MAY OCCUR IN
MAINLY EARLY MORNING FOG AND STRATUS. SCATTERED SHOWERS AND
THUNDERSTORMS MAY CAUSE RESTRICTIONS AT TIMES WEDNESDAY THROUGH
SATURDAY.

&&

.CAE WATCHES/WARNINGS/ADVISORIES...
SC...NONE.
GA...NONE.
&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE COLUMBIA SC
505 AM EDT MON AUG 22 2011

GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-230915-
LINCOLN-MCDUFFIE-COLUMBIA-RICHMOND-BURKE-LANCASTER-CHESTERFIELD-
MCCORMICK-NEWBERRY-FAIRFIELD-KERSHAW-EDGEFIELD-SALUDA-LEXINGTON-
RICHLAND-LEE-AIKEN-SUMTER-BARNWELL-ORANGEBURG-CALHOUN-CLARENDON-
BAMBERG-
505 AM EDT MON AUG 22 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL GEORGIA AND
CENTRAL SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

SCATTERED SHOWERS AND THUNDERSTORMS AREA EXPECTED TO DEVELOP ONCE
AGAIN THIS AFTERNOON ACROSS EAST-CENTRAL SOUTH CAROLINA AND EASTERN
GEORGIA THIS AFTERNOON AND EVENING. A FEW THUNDERSTORMS COULD
BECOME SEVERE WITH DAMAGING WINDS BEING THE MAIN ISSUE.

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

HURRICANE IRENE IS FORECAST TO MOVE TO THE WEST-NORTHWEST FOR THE
NEXT SEVERAL DAYS. THE STORM COULD HAVE AN IMPACT ACROSS PORTIONS
OF THE SOUTHEASTERN UNITED STATES BY THIS WEEKEND. ALTHOUGH IT IS
STILL TOO SOON TO DETERMINE IF IRENE WILL DIRECTLY IMPACT THE
REGION...PEOPLE ACROSS CENTRAL SOUTH CAROLINA AND EASTERN GEORGIA
SHOULD CONTINUE TO CAREFULLY MONITOR THE PROGRESS OF THIS STORM
THROUGHOUT THE WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
550 PM EDT MON AUG 22 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0530 PM     TSTM WND DMG     6 NNW SMOAKS            33.17N 80.86W
08/22/2011                   BAMBERG            SC   PUBLIC

            PUBLIC REPORTED SEVERAL LARGE LIMBS DOWN ALONG OLD
            BUCKHEAD ROAD.

0532 PM     HAIL             6 NNW SMOAKS            33.17N 80.86W
08/22/2011  E0.75 INCH       BAMBERG            SC   PUBLIC

            PUBLIC REPORTED DIME SIZE HAIL ALONG OLD BUCKHEAD ROAD.

&&

VAUGHAN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
644 PM EDT MON AUG 22 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0509 PM     TSTM WND DMG     4 NNE BAMBERG           33.35N 81.01W
08/22/2011                   ORANGEBURG         SC   LAW ENFORCEMENT

            HIGHWAY PATROL REPORTED A TREE IN THE ROADWAY AT SNAKE
            SWAMP ROAD AND HIGHWAY 301.

&&

VAUGHAN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
914 PM EDT MON AUG 22 2011

SCZ035-041-230145-
BAMBERG-BARNWELL-
914 PM EDT MON AUG 22 2011

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF BAMBERG AND BARNWELL
COUNTIES THROUGH 945 PM EDT...

AT 907 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM...NEAR OLAR...MOVING SOUTHEAST AT 20 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
...

PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 40 TO 50 MPH...
PEA SIZE HAIL...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY
SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1...8 7
7...6 3 3...6 7 7 2.

&&

LAT...LON 3312 8120 3310 8134 3311 8134 3321 8130
      3328 8124 3328 8110 3312 8088 3309 8088
      3307 8089 3306 8092 3310 8094 3304 8104
      3303 8109
TIME...MOT...LOC 0114Z 332DEG 16KT 3313 8116

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