Severe Thunderstorm Warning 48, NWS Charleston, SC

873 
WWUS52 KCHS 052359
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
759 PM EDT THU APR 5 2012

SCC013-060006-
/O.CAN.KCHS.SV.W.0048.000000T0000Z-120406T0030Z/
BEAUFORT SC-
759 PM EDT THU APR 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL BEAUFORT COUNTY
HAS BEEN CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
THURSDAY EVENING FOR SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.

LAT...LON 3300 7936 3301 7957 3294 7961 3297 7956
      3290 7957 3275 7986 3260 7999 3247 8034
      3252 8044 3248 8047 3300 8056 3320 8077
      3334 8051 3326 8043 3327 8030 3344 8023
      3351 8005 3350 7996 3332 7974 3314 7926
TIME...MOT...LOC 2356Z 250DEG 31KT 3331 8047 3312 8024
          3288 8013 3255 8006

$$

SCC015-019-029-035-060030-
/O.CON.KCHS.SV.W.0048.000000T0000Z-120406T0030Z/
DORCHESTER SC-CHARLESTON SC-BERKELEY SC-COLLETON SC-
759 PM EDT THU APR 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR EASTERN COLLETON...BERKELEY...CHARLESTON AND DORCHESTER
COUNTIES...

AT 756 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM
DUNCAN CHAPEL TO RIDGEVILLE TO MIDDLETON PLACE TO BEACHWALKER PARK...
MOVING EAST AT 35 MPH.

PREPARE NOW FOR THE FOLLOWING HAZARDS...
DAMAGING WINDS IN EXCESS OF 60 MPH...
HAIL UP TO QUARTER SIZE...
TORRENTIAL RAIN WHICH MAY PRODUCE LOCALIZED FLOODING...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...ADAMS
RUN...ARCHDALE...AWENDAW...BEARS BLUFF...BENNETTS POINT...BONNEAU...
BONNEAU BEACH...BOONE HALL PLANTATION...BULL ISLAND...CAINHOY...CAPE
ISLAND...CAPE ROMAIN...CAPERS INLET...CHARLES TOWNE LANDING...
CHARLESTON AIRPORT...CHARLESTON NAVAL COMPLEX...COLLEGE PARK...
COTTAGEVILLE...CROSS...CROWFIELD PLANTATION...DANIEL ISLAND...DELEMAR
CROSSROADS...DON HOLT BRIDGE...DORCHESTER...DOWNTOWN CHARLESTON...
EADYTOWN...EASTERN LAKE MARION...EDISTO BEACH...EDISTO ISLAND...FORT
JOHNSON...FORT SUMTER...GARRIS LANDING...GIVHANS...GIVHANS FERRY
STATE PARK...GOOSE CREEK...HAMPTON PLANTATION STATE PARK...HANAHAN...
HARLEYVILLE...HOLLYWOOD...HUGER...I-26/I-526 INTERCHANGE...INDIAN
FIELD...JACKSONBORO...JAMES ISLAND...JAMES ISLAND COUNTY PARK...
JAMESTOWN...JEDBURG...JOHNS ISLAND...KIAWAH ISLAND...KNIGHTSVILLE...
LADSON...LIGHTHOUSE ISLAND...MAGNOLIA GARDENS...MAYBANK BRIDGE...
MCCLELLANVILLE...MEGGETT...MIDDLETON PLACE...MONCKS CORNER...MOUNT
PLEASANT...MOUNT PLEASANT REGIONAL AIRPORT...MOUNT PLEASANT TOWNE 
CENTRE...NAVAL WEAPONS STATION CHARLESTON...NORTH CHARLESTON... 
PINOPOLIS...PRICE INLET...RAVENEL...REEVESVILLE... 
RIDGEVILLE...ROCKVILLE...ROUND O...SAINT GEORGE...SAINT 
STEPHEN...SANGAREE...SEABROOK ISLAND... SHADOWMOSS...SLANDS 
BRIDGE...SOUTHERN LAKE MOULTRIE...SULLIVANS 
ISLAND...SUMMERVILLE...WADMALAW ISLAND...WANDO...WEST ASHLEY AND 
YONGES ISLAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS THUNDERSTORM IS CAPABLE OF PRODUCING VERY HEAVY RAIN...WHICH MAY
FLOOD ROADS...DITCHES AND LOW-LYING AREAS. AVOID FLOOD PRONE AREAS
AND DO NOT DRIVE INTO PLACES WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3300 7936 3301 7957 3294 7961 3297 7956
      3290 7957 3275 7986 3260 7999 3247 8034
      3252 8044 3248 8047 3300 8056 3320 8077
      3334 8051 3326 8043 3327 8030 3344 8023
      3351 8005 3350 7996 3332 7974 3314 7926
TIME...MOT...LOC 2356Z 250DEG 31KT 3331 8047 3312 8024
          3288 8013 3255 8006

$$

953 
WWUS52 KCHS 060018
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
818 PM EDT THU APR 5 2012

SCC029-060027-
/O.CAN.KCHS.SV.W.0048.000000T0000Z-120406T0030Z/
COLLETON SC-
818 PM EDT THU APR 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN COLLETON COUNTY HAS
BEEN CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
THURSDAY EVENING FOR SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.

LAT...LON 3300 7936 3301 7957 3294 7961 3297 7956
      3290 7957 3275 7986 3260 7999 3256 8013
      3279 8019 3287 8025 3305 8037 3329 8060
      3334 8051 3326 8043 3327 8030 3344 8023
      3351 8005 3350 7996 3332 7974 3314 7926
TIME...MOT...LOC 0017Z 250DEG 31KT 3331 8040 3307 8012
          3289 7995 3252 7996

$$

SCC015-019-035-060030-
/O.CON.KCHS.SV.W.0048.000000T0000Z-120406T0030Z/
DORCHESTER SC-CHARLESTON SC-BERKELEY SC-
818 PM EDT THU APR 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR BERKELEY...CHARLESTON AND EASTERN DORCHESTER COUNTIES...

AT 817 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 6
MILES NORTH OF HARLEYVILLE TO SANGAREE TO PARK CIRCLE TO 9 MILES
SOUTHEAST OF KIAWAH ISLAND...MOVING EAST AT 35 MPH.

PREPARE NOW FOR THE FOLLOWING HAZARDS...
DAMAGING WINDS IN EXCESS OF 60 MPH...
TORRENTIAL RAIN WHICH MAY PRODUCE LOCALIZED FLOODING...

WINDS HAVE RECENTLY GUSTED TO 40 MPH AT THE CHARLESTON AIRPORT. 
DAMAGING WINDS ARE POSSIBLE IN DOWNTOWN CHARLESTON PRIOR TO 830 PM.
TAKE COVER NOW.

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
ARCHDALE...AWENDAW...BONNEAU...BONNEAU BEACH...BOONE HALL
PLANTATION...BULL ISLAND...CAINHOY...CAPE ISLAND...CAPE ROMAIN...
CAPERS INLET...CHARLES TOWNE LANDING...CHARLESTON AIRPORT...
CHARLESTON NAVAL COMPLEX...COLLEGE PARK...CROSS...CROWFIELD
PLANTATION...DANIEL ISLAND...DON HOLT BRIDGE...DORCHESTER...DOWNTOWN
CHARLESTON...EADYTOWN...EASTERN LAKE MARION...FORT JOHNSON...FORT
SUMTER...GARRIS LANDING...GOOSE CREEK...HAMPTON PLANTATION STATE
PARK...HANAHAN...HARLEYVILLE...HUGER...I-26/I-526 INTERCHANGE...JAMES
ISLAND...JAMES ISLAND COUNTY PARK...JAMESTOWN...JEDBURG...JOHNS
ISLAND...KIAWAH ISLAND...KNIGHTSVILLE...LADSON...LIGHTHOUSE ISLAND...
MAGNOLIA GARDENS...MAYBANK BRIDGE...MCCLELLANVILLE...MIDDLETON
PLACE...MONCKS CORNER...MOUNT PLEASANT...MOUNT PLEASANT REGIONAL
AIRPORT...MOUNT PLEASANT TOWNE CENTRE...NAVAL WEAPONS STATION
CHARLESTON...NORTH CHARLESTON...NORTHERN LAKE MOULTRIE...OLD SANTEE
CANAL STATE PARK...PINOPOLIS...PRICE INLET...RIDGEVILLE...SAINT
STEPHEN...SANGAREE...SANTEE COASTAL RESERVE...SHADOWMOSS...SLANDS
BRIDGE...SOUTHERN LAKE MOULTRIE...SUMMERVILLE...WANDO AND WEST
ASHLEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT LIGHTNING IS OCCURRING WITH THESE THUNDERSTORMS. MOVE 
INDOORS IMMEDIATELY. IF THERE IS NO SAFE SHELTER AVAILABLE...STAY 
AWAY FROM ISOLATED HIGH OBJECTS AND BODIES OF WATER. IF YOU CAN HEAR 
THUNDER...YOU ARE WITHIN STRIKING DISTANCE.

&&

LAT...LON 3300 7936 3301 7957 3294 7961 3297 7956
      3290 7957 3275 7986 3260 7999 3256 8013
      3279 8019 3287 8025 3305 8037 3329 8060
      3334 8051 3326 8043 3327 8030 3344 8023
      3351 8005 3350 7996 3332 7974 3314 7926
TIME...MOT...LOC 0017Z 250DEG 31KT 3331 8040 3307 8012
          3289 7995 3252 7996

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHARLESTON SC
445 PM EDT THU APR 5 2012

.SYNOPSIS...
A BACKDOOR FRONT WILL MOVE THROUGH THE AREA TONIGHT AND EARLY
FRIDAY WHILE A WAVE OF LOW PRESSURE MOVES ALONG IT. COOL HIGH
PRESSURE WILL BUILD IN BEHIND THE FRONT THROUGH THE WEEKEND. A
SECONDARY COLD FRONT WILL MOVE THROUGH SUNDAY NIGHT...WITH YET
ANOTHER FRONT FOR THE MIDDLE OF NEXT WEEK.

&&

.NEAR TERM /UNTIL 6 AM FRIDAY MORNING/...
AS OF 4 PM THE BACKDOOR COLD FRONT IS SLOWLY PUSHING SOUTH THROUGH
THE PEE DEE REGION OF EASTERN SOUTH CAROLINA WITH SEVERAL CLUSTERS
OF STRONG TO SEVERE THUNDERSTORMS DEVELOPING ALONG AND AHEAD OF
IT. HOWEVER DURING THE LAST COUPLE HOURS WE HAVE NOTICED THE FRONT
NEARLY STALLING AND THE CONVECTION ANCHORING ITSELF JUST NORTH OF
OUR FORECAST AREA. BASED ON THE LATEST HIGH-RES MODELS...WE ARE
BEGINNING TO THINK THE FRONT MAY NOT MOVE MUCH FARTHER SOUTH UNTIL
LATER THIS EVENING OR OVERNIGHT. THUS THE SEVERE POTENTIAL IN THE
CHARLESTON AREA LOOKS A BIT LOWER THAN INITIALLY.

MEANWHILE THUNDERSTORMS ARE QUICKLY DEVELOPING AND EXPANDING
ACROSS CENTRAL GEORGIA...MOVING ENE TOWARD OUR FAR WESTERN ZONES.
THIS IS ASSOCIATED WITH A FLURRY OF SHORTWAVES LIFTING OUT OF THE
CENTRAL GULF COAST REGION. THE AIRMASS IN SOUTHEAST GA IS PRIMED
FOR STRONG CONVECTION GIVEN HIGH TEMPS IN THE MIDDLE 80S AND
DEWPOINTS AROUND 60. WE LOCALLY EXPANDED THE EXISTING SEVERE
THUNDERSTORM WATCH TO INCLUDE THE REMAINDER OF OUR COUNTIES DUE TO
THE NEW CONVECTIVE DEVELOPMENT.

LOOKING AT UPSTREAM CONVECTIVE DEVELOPMENT AND THE EXPECTED TRACK
OF THE SHORTWAVE ENERGY...THE ACTIVITY MOVING INTO OUR WESTERN
ZONES WILL LIKELY CONTINUE TO EXPAND AND PUSH THROUGH MUCH OF THE
AREA THIS EVENING. IF THE FRONT REMAINS STALLED NORTH OF THE AREA
THROUGH EARLY THIS EVENING AND THE AIRMASS REMAINS UNWORKED...A
SEVERE THREAT WILL LIKELY CONTINUE FOR THE ENTIRE FORECAST AREA AT
LEAST THROUGH EARLY TO MID EVENING.

AFTER MIDNIGHT...MUCH OF THE ACTIVITY WILL BE OFF THE COAST AS THE
SURFACE LOW CURRENTLY DEVELOPING OVER THE MIDLANDS PUSHES OFF THE
COAST AND THE FRONT SINKS SOUTH. HOWEVER THE CLOSED UPPER LOW WILL
MOVE THROUGH THE AREA LATE TONIGHT WHICH MAY SPARK SOME ADDITIONAL
SHOWERS AND THUNDERSTORMS. SOUTH OF THE SURFACE FRONT THE AIRMASS
WILL REMAIN MODERATELY UNSTABLE WITH CAPE VALUES 800-1000 J/KG AND
LIFTED INDICES -2 TO -3C. THUS A SEVERE THUNDERSTORM CANNOT BE
RULED OUT LATE TONIGHT...ESPECIALLY OVER SOUTHEAST GEORGIA AND
EXTREME SOUTHERN SOUTH CAROLINA.

&&

.SHORT TERM /6 AM FRIDAY MORNING THROUGH SUNDAY/...
FRIDAY...THERE REMAINS MUCH UNCERTAINTY REGARDING PRECIPITATION
COVERAGE AT DAYBREAK...WITH THE 12Z GFS AND NAM SOLUTIONS CONTINUING
TO SHOW NOTABLE DIFFERENCES IN DETAILS OF SYNOPTIC SCALE FEATURES.
IN GENERAL...THE CLOSED UPPER LOW WILL BE OPENING INTO A TROUGH AS
IT SWINGS DUE EAST DIRECTLY OVER THE FORECAST AREA BY SUNRISE FRIDAY
MORNING. AT THE SURFACE...THE BACKDOOR COLD FRONT AND ASSOCIATED
WAVE OF LOW PRESSURE WILL BE SHIFTING SOUTH/SOUTHEAST THROUGH THE
FORECAST AREA. THE MAIN FORECAST CONCERN WILL BE COVERAGE OF
PRECIPITATION DURING THE MORNING HOURS AND THE POTENTIAL FOR
THUNDERSTORMS MAINLY SOUTH OF THE FRONT.

SHOWERS AND THUNDERSTORMS FRIDAY MORNING COULD BE A COMBINATION OF
CONVECTION CONCENTRATED ALONG THE FRONT...AS WELL AS RESIDUAL
ACTIVITY ORIGINATING WEST OF THE AREA. HAVE LEANED TOWARD PERSISTENCE
AND A BLEND OF GFS/NAM SOLUTIONS BY MAINTAINING POPS AT 12Z FRIDAY
RANGING FROM AROUND 40 PERCENT FAR SOUTHEAST GEORGIA TO 60 PERCENT
IN THE CHARLESTON TRI COUNTY REGION...HIGHLIGHTING BEST RAIN
COVERAGE ALONG THE COLD FRONT. WILL INCLUDE MENTION OF A SLIGHT
CHANCE FOR THUNDER THROUGH LATE MORNING MAINLY SOUTH OF THE
SAVANNAH RIVER...WHERE MODEL SOLUTIONS INDICATE LINGERING
INSTABILITY AND LARGE SCALE FORCING FROM THE PASSING UPPER
TROUGH. WILL THEN DECREASE RAIN CHANCES FROM SOUTHWEST TO
NORTHEAST EARLY FRIDAY AFTERNOON...AS THE SURFACE LOW DEEPENS OVER
THE GULF STREAM AND PULLS THE COLD FRONT OFF THE COAST. RAIN FREE
CONDITIONS AND CLEARING SKIES ARE THEN EXPECTED BY EARLY FRIDAY
EVENING.

STRONG NORTH/NORTHEAST FLOW BEHIND THE COLD FRONT WILL ADVECT MUCH
COOLER AIR INTO THE REGION ON FRIDAY...AND WITH CLOUDS AND RAIN
LINGERING THROUGH AT LEAST LATE MORNING...HIGH TEMPERATURES WILL
BE SUPPRESSED IN THE MID TO UPPER 60S. IN ADDITION...A TIGHT
PRESSURE GRADIENT BETWEEN THE ATLANTIC SURFACE LOW AND CANADIAN
HIGH PRESSURE BUILDING FROM THE NORTH WILL SUPPORT BREEZY
CONDITIONS FRIDAY AFTERNOON.

LAKE WINDS...NORTH TO NORTHEAST WINDS WILL REACH AT LEAST 15 TO 20
KT ACROSS LAKE MOULTRIE FRIDAY. GUSTS ALONG THE LAKE SHORE WILL
APPROACH 25 KT. IF THE GUSTS BECOME FREQUENT...A LAKE WIND
ADVISORY WILL EVENTUALLY BE NEEDED.

FRIDAY NIGHT...CLEARING SKIES...PERSISTENT NORTHEAST FLOW AND COLD
ADVECTION WILL ALLOW TEMPERATURES TO FALL CONSIDERABLY LOWER THAN
PREVIOUS NIGHTS. EXPECT MINIMUM TEMPERATURES TO RANGE FROM AROUND
40 DEGREES FAR INLAND TO THE MID 40S AWAY FROM THE BEACHES.

SATURDAY...SURFACE HIGH PRESSURE WILL STEADILY DESCEND OVER THE
MID ATLANTIC AND SOUTHEAST STATES ON SATURDAY. COOL AND DRY NORTH
TO NORTHEAST FLOW WILL SUPPORT SUNNY CONDITIONS. UNDER FULL
INSOLATION...COOL MORNING TEMPERATURES WILL REBOUND QUICKLY AND
PEAK IN THE LOW 70S FOR MOST LOCATIONS. AS THE SURFACE HIGH
BECOMES SITUATED DIRECTLY OVER THE AREA SATURDAY NIGHT...THE
WEAKENING PRESSURE GRADIENT WILL ALLOW WINDS TO DECOUPLE UNDER
CLEAR SKIES AND SUPPORT IDEAL RADIATIONAL COOLING CONDITIONS.
MINIMUM TEMPERATURES WILL FALL INTO THE LOW TO MID 40S AWAY FROM
THE LOCALLY WARMER COASTLINE.

SUNDAY...HIGH PRESSURE WILL SHIFT SOUTHEAST AHEAD OF A DRY COLD
FRONT BY SUNDAY AFTERNOON. COMPRESSIONAL HEATING AHEAD OF THE
FRONT AND DOWNSLOPE FLOW OFF THE APPALACHIANS WILL MAINTAIN THE
GRADUAL WARMING TREND. EXPECT HIGH TEMPERATURES TO REACH THE MID
70S INLAND...WITH THE SEA BREEZE KEEPING TEMPERATURES ALONG THE
COAST IN THE UPPER 60S.

&&

.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
A BROAD TROUGH WILL PREVAIL OVER THE EASTERN STATES EARLY NEXT
WEEK...WITH AN AMPLIFIED RIDGE OUT WEST. BY MID WEEK THE TROUGH
SHOWS SIGNS OF WEAKENING WHILE THE RIDGE SHIFTS INTO THE CENTRAL
STATES AND BEGINS TO DAMPEN OUT. LOW PRESSURE IN THE NE AND SHORT
WAVE ENERGY THAT DROPS SOUTH OUT OF CANADA WILL SEND ANOTHER COLD
FRONT THROUGH THE REGION TUESDAY. THE FRONT LOOKS TO BE STARVED FOR
MOISTURE...AND WITH A DOWNSLOPE FLOW TO PREVAIL OFF THE MOUNTAINS WE
HAVE MAINTAINED THE RAIN-FREE FORECAST. THERE ARE SOME INDICATIONS
THAT THE FRONT COULD TRANSITION INTO A WARM FRONT AND PRODUCE SOME
OVER-RUNNING RAINS BY LATE IN THE FORECAST PERIOD...BUT CONFIDENCE
ON THIS SCENARIO IS EXTREMELY LOW THIS FAR AWAY. WHAT DOES APPEAR
CERTAIN IS THAT THERE WILL BE SOME HUGE DIURNAL TEMPERATURE SWINGS.
DAYTIME HIGHS WILL BE ABOVE NORMAL MONDAY...DOWN TO NEAR OR EVEN
BELOW NORMAL TUESDAY THROUGH THURSDAY. NIGHT TIME LOWS WILL BE NEAR
NORMAL MONDAY NIGHT...THEN BELOW NORMAL THEREAFTER.

&&

.AVIATION /20Z THURSDAY THROUGH TUESDAY/...
TWO CLUSTERS OF CONVECTION ARE BEING WATCHED AT THIS POINT. STORMS
ALONG THE NEARLY STALLED SURFACE FRONT NORTH OF KCHS WILL REMAIN
TO THE NORTH FOR NOW. HOWEVER INCREASING INTERACTION BETWEEN THE
SEA BREEZE AND CONVECTIVE OUTFLOWS MAY SPUR AN ISOLATED CELL NEAR
THE AIR FIELD. WE ARE THINKING THE BEST CHANCE FOR STORMS AT THE
TERMINAL WILL BE MID-EVENING AS ACTIVITY OVER CENTRAL GEORGIA
DRIVES EAST. AT KSAV THE ACTIVITY WILL LIKELY PUSH IN FROM THE
WEST AFTER 22Z AND CONTINUE THROUGH MUCH OF THE EVENING.

CLOSER TO DAYBREAK FRIDAY...MVFR CONDITIONS EXPECTED AT BOTH
TERMINALS AS THE COLD FRONT SINKS SOUTH AND A COOL NORTHEAST FLOW
DEVELOPS.

EXTENDED AVIATION OUTLOOK...MVFR OR LOWER CONDITIONS FRIDAY
MORNING AS A POST-COLD FRONT INVERSION LOCKS IN CONSIDERABLE
MOISTURE UNDERNEATH. VFR WEATHER WILL THEN PREVAIL LATER FRIDAY
THROUGH MONDAY.

&&

.MARINE...
HECTIC WIND DIRECTIONS TONIGHT AS A BACKDOOR FRONT DROPS SLOWLY
SOUTH INTO THE WATERS. NORTHEAST FLOW DEVELOPING LATE TONIGHT OVER
NORTHERN SC WATERS BEHIND THE FRONT.

FRIDAY THROUGH TUESDAY...A BACKDOOR COLD FRONT WILL BE PULLED
ACROSS THE WATERS FRIDAY MORNING BEHIND A DEEPENING LOW PRESSURE
SYSTEM OVER THE GULF STREAM. A TIGHTENING PRESSURE GRADIENT
BETWEEN THE ATLANTIC LOW AND BUILDING CANADIAN HIGH PRESSURE FROM
THE NORTH...ALONG WITH ENHANCED MIXING INTO LOW LEVEL JETTING
WITHIN STRONG COLD ADVECTION...WILL SUPPORT SURGING NORTH/NORTHEAST
FLOW BY EARLY FRIDAY. SMALL CRAFT ADVISORIES INITIATING ACROSS ALL
MARINE ZONES FRIDAY MORNING APPEAR ON TRACK WITH LATEST MODEL
SOLUTIONS. HOWEVER...THERE REMAINS CONSIDERABLE DIFFERENCES IN THE
STRENGTH OF THE NORTHEAST SURGE BETWEEN THE 12Z GFS AND 12Z NAM
MODEL SOLUTIONS...LENDING SOME UNCERTAINTY TO GALE POTENTIAL. THE
GFS HAS CONSISTENTLY INDICATED A MORE AGGRESSIVELY TIGHT PRESSURE
GRADIENT BETWEEN THE TWO SURFACE FEATURES ON FRIDAY...AND THUS HAS
CONSIDERABLY HIGHER WINDS SPEEDS THAN SEEN IN BOTH THE NAM AND
ECMWF RUNS. DUE TO THESE INCONSISTENCIES PREFER TO LEAVE THE GALE
WATCH GOING FOR THE CHARLESTON COUNTY WATERS AND THE OFFSHORE
GEORGIA ZONES FOR THE AFTERNOON FORECAST PACKAGE...ALLOWING
SUBSEQUENT FORECAST SHIFTS TO REASSESS LATER MODEL GUIDANCE.

HAVE ALSO OPTED TO LEAN TOWARD PERSISTENCE WITH WIND SPEEDS AT
THIS POINT...INDICATING NORTH AND NORTHEAST WINDS REACHING UP TO 25
OR EVEN 30 KT SUSTAINED FRIDAY INTO FRIDAY NIGHT. EXPECT SEAS TO
BUILD ACCORDINGLY...RANGING FROM AS HIGH AS 7 OR 8 FT WITHIN 20
NM OF THE COAST TO AROUND 10 FT ACROSS THE OUTER GEORGIA WATERS.
CHARLESTON HARBOR COULD EXPERIENCE AT LEAST 2 FOOT WAVES DURING
THIS TIME.

WINDS WILL DIMINISH CONSIDERABLY ON SATURDAY...AS HIGH PRESSURE
MOVES DIRECTLY OVER THE WATERS. HOWEVER...SEAS WILL BE MORE SLOW
TO SUBSIDE...MAINTAINING SMALL CRAFT ADVISORY CONDITIONS UNTIL
LATE SATURDAY OR SATURDAY NIGHT.

MARINE CONDITIONS ARE MORE BENIGN SUNDAY...BUT THIS IS ONLY
TEMPORARY AS A SECONDARY COLD FRONT MOVES THROUGH SUNDAY NIGHT. IN
WAKE OF THIS FRONT...EXPECT PERIODS OF COLD ADVECTION AND
OCCASIONAL TIGHTENING OF THE PRESSURE GRADIENT TO PERHAPS ALLOW
FOR ADDITIONAL ADVISORIES TO RETURN FOR MONDAY AND/OR TUESDAY.

&&

.TIDES/COASTAL FLOODING...
THE COMBINATION OF THE PERIGEAN SPRING TIDE LATE THIS WEEK AND
MODERATE TO OCCASIONALLY STRONG NORTH AND NORTHEAST WINDS WILL
LEAD TO POSITIVE TIDAL DEPARTURES THROUGH SATURDAY. AS A
RESULT...THERE IS AT LEAST THE RISK OF AT LEAST SHALLOW COASTAL
FLOODING AROUND THE TIMES OF THE EVENING HIGH TIDE CYCLE EACH DAY.
IN FACT...A COASTAL FLOOD WATCH AND/OR WARNING MAY NEED TO BE
CONSIDERED AT A LATER TIME DUE TO INDICATIONS THAT THE FRIDAY HIGH
TIDE IN CHARLESTON HARBOR COULD APPROACH 8.0 FT MLLW. THESE
CONDITIONS...ALONG WITH HIGHER THAN NORMAL SEAS...WILL ALLOW FOR
AREAS OF BEACH EROSION TO ALSO OCCUR.

HIGH SURF...AT THIS TIME...IT LOOKS AS IF THE FLOW IS TOO PARALLEL
TO THE COAST FOR A HIGH SURF ADVISORY TO OCCUR FRIDAY...ALTHOUGH
THERE CERTAINLY WILL BE BREAKERS AROUND 3 OR 4 FT.

RIP CURRENTS...STRONG NORTHEAST WINDS ON FRIDAY...ALONG WITH THE
SPRING TIDE...SUPPORTS A MODERATE RISK FOR RIP CURRENTS ACROSS THE
CHARLESTON COUNTY BEACH FOR FRIDAY. THE AFOREMENTIONED CONDITIONS
WILL LEAD TO AN ELEVATED RISK OF RIP CURRENTS AT AREA BEACHES
AGAIN ON SATURDAY.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
SC...NONE.
MARINE...SMALL CRAFT ADVISORY FROM 7 AM TO 7 PM EDT FRIDAY FOR AMZ330.
     SMALL CRAFT ADVISORY FROM 7 AM FRIDAY TO 5 PM EDT SATURDAY FOR
     AMZ352-354.
     GALE WATCH FROM FRIDAY MORNING THROUGH FRIDAY EVENING FOR
     AMZ350.
     SMALL CRAFT ADVISORY FROM 7 AM TO 11 AM EDT FRIDAY FOR AMZ350.
     GALE WATCH FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT FOR
     AMZ374.
     SMALL CRAFT ADVISORY FROM 7 AM TO 1 PM EDT FRIDAY FOR AMZ374.

&&

SYNOPSIS...
NEAR TERM...JRL
SHORT TERM...79
LONG TERM...
AVIATION...JRL
MARINE...JRL/79
TIDES/COASTAL FLOODING...

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHARLESTON SC
417 PM EDT THU APR 5 2012

AMZ330-352-354-GAZ087-088-099>101-114>116-118-137-138-140-SCZ040-
042>045-047-062030-
CHARLESTON HARBOR-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM...INCLUDING
GRAYS REEF NATIONAL MARINE SANCTUARY-JENKINS-SCREVEN-CANDLER-BULLOCH-
EFFINGHAM-TATTNALL-EVANS-INLAND BRYAN-INLAND CHATHAM-LONG-
INLAND LIBERTY-INLAND MCINTOSH-ALLENDALE-HAMPTON-INLAND COLLETON-
DORCHESTER-INLAND BERKELEY-INLAND JASPER-
417 PM EDT THU APR 5 2012

...SEVERE THUNDERSTORM WATCH 146 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL
WATERS...SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTERS ARE REQUESTED TO SUBMIT SEVERE WEATHER REPORTS TO
THE NATIONAL WEATHER SERVICE IN CHARLESTON SC.

AMZ350-062030-
WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20 NM-
417 PM EDT THU APR 5 2012

...SEVERE THUNDERSTORM WATCH 146 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...
...GALE WATCH IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS.

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   GALE WATCH.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTERS ARE REQUESTED TO SUBMIT SEVERE WEATHER REPORTS TO
THE NATIONAL WEATHER SERVICE IN CHARLESTON SC.

AMZ374-062030-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
417 PM EDT THU APR 5 2012

...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY
NIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS.

.DAY ONE...TONIGHT.

SEVERE THUNDERSTORMS...A FEW SEVERE STORMS MAY MOVE OFF THE COAST
THIS EVENING...PRODUCING DAMAGING WINDS AND LARGE HAIL.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   GALE WATCH.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTERS ARE REQUESTED TO SUBMIT SEVERE WEATHER REPORTS TO
THE NATIONAL WEATHER SERVICE IN CHARLESTON SC.

GAZ117-119-139-141-SCZ048-049-051-052-062030-
COASTAL BRYAN-COASTAL CHATHAM-COASTAL LIBERTY-COASTAL MCINTOSH-
BEAUFORT-COASTAL COLLETON-COASTAL JASPER-TIDAL BERKELEY-
417 PM EDT THU APR 5 2012

...SEVERE THUNDERSTORM WATCH 146 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST GEORGIA AND
SOUTHEAST SOUTH CAROLINA.

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

TIDES/COASTAL FLOODING...THE COMBINATION OF MODERATE TO STRONG
NORTHEAST WINDS AND THE UPCOMING PERIGEAN SPRING TIDE WILL RESULT
IN AT LEAST SHALLOW COASTAL FLOODING FRIDAY AND SATURDAY
EVENINGS. COASTAL FLOOD ADVISORIES...OR PERHAPS EVEN A COASTAL
FLOOD WATCH AND OR WARNING MAY BE REQUIRED.

RIP CURRENTS...MODERATE TO STRONG WINDS...LARGER THAN NORMAL
BREAKING WAVES...AND HIGH ASTRONOMICAL SPRING TIDE WILL RESULT IN
AN ELEVATED RISK OF RIP CURRENTS AT AREA BEACHES SATURDAY.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTERS ARE REQUESTED TO SUBMIT SEVERE WEATHER REPORTS TO
THE NATIONAL WEATHER SERVICE IN CHARLESTON SC.

SCZ050-062030-
CHARLESTON-
417 PM EDT THU APR 5 2012

...SEVERE THUNDERSTORM WATCH 146 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...
...MODERATE RISK FOR RIP CURRENTS IN EFFECT FROM FRIDAY MORNING
THROUGH FRIDAY EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH CAROLINA.

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   MODERATE RISK FOR RIP CURRENTS.

TIDES/COASTAL FLOODING...THE COMBINATION OF MODERATE TO STRONG
NORTHEAST WINDS AND THE UPCOMING PERIGEAN SPRING TIDE WILL RESULT
IN AT LEAST SHALLOW COASTAL FLOODING FRIDAY AND SATURDAY
EVENINGS. COASTAL FLOOD ADVISORIES...OR PERHAPS EVEN A COASTAL
FLOOD WATCH AND OR WARNING MAY BE REQUIRED.

RIP CURRENTS...MODERATE TO STRONG WINDS...LARGER THAN NORMAL
BREAKING WAVES...AND HIGH ASTRONOMICAL SPRING TIDE WILL RESULT IN
AN ELEVATED RISK OF RIP CURRENTS AT AREA BEACHES SATURDAY.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTERS ARE REQUESTED TO SUBMIT SEVERE WEATHER REPORTS TO
THE NATIONAL WEATHER SERVICE IN CHARLESTON SC.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
610 PM EDT THU APR 5 2012

GAZ101-SCZ042-047-052245-
EFFINGHAM-HAMPTON-INLAND JASPER-
610 PM EDT THU APR 5 2012

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF EFFINGHAM...HAMPTON
AND JASPER COUNTIES THROUGH 645 PM EDT...

AT 608 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM...NEAR STILLWELL...MOVING NORTHEAST AT 25 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
CLYO...EBENEZER...RINCON...SHAWNEE...SPRINGFIELD...STILLWELL...
FURMAN...GARNETT...PINELAND...ROBERTVILLE...SCOTIA...TARBORO AND
TILLMAN...

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH IS ALSO IN EFFECT. THUNDERSTORMS CAN
PRODUCE LARGE HAIL...DAMAGING WINDS...AND ISOLATED TORNADOES
SUDDENLY...SOMETIMES WITH LITTLE OR NO WARNING. BE ALERT FOR RAPIDLY
CHANGING WEATHER CONDITIONS AND BE READY TO ACT QUICKLY IF SEVERE
WEATHER IS OBSERVED OR A WARNING IS ISSUED.

&&

LAT...LON 3272 8123 3247 8097 3228 8117 3227 8125
      3246 8146
TIME...MOT...LOC 2210Z 239DEG 20KT 3239 8122

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
619 PM EDT THU APR 5 2012

GAZ118-060200-
INLAND CHATHAM-
619 PM EDT THU APR 5 2012

...DENSE SMOKE IMPACTING PORTIONS OF CHATHAM COUNTY...

VISIBILITIES ARE BEING REDUCED WITHIN DENSE SMOKE ALONG AND WEST
OF INTERSTATE 95 IN CHATHAM COUNTY. MOTORISTS COULD EXPERIENCE
HAZARDOUS DRIVING CONDITIONS NEAR THE INTERSECTIONS OF STATE ROAD
204 AND INTERSTATE 95. USE CAUTION WHEN DRIVING THROUGH AREAS OF
DENSE SMOKE.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
640 PM EDT THU APR 5 2012

SCZ043-047>049-051-052315-
BEAUFORT-COASTAL COLLETON-COASTAL JASPER-INLAND COLLETON-INLAND
JASPER-
640 PM EDT THU APR 5 2012

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF JASPER...COLLETON AND
BEAUFORT COUNTIES THROUGH 715 PM EDT...

AT 636 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM...NEAR NEVADUM...MOVING EAST AT 35 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
BEAUFORT...BEAUFORT MARINE CORPS AIR STATION...BURTON...CLARENDON...
COOSAWHATCHIE...DALE...GARDENS CORNER...GRAHAMVILLE...GREEN POND...
LADYS ISLAND...LAUREL BAY...OLD HOUSE...POCOTALIGO...RIDGELAND...
SHELDON AND SHELL POINT...

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HAVE AN ACTION PLAN READY IN THE EVENT THIS STORM STRENGTHENS OR A
WARNING IS ISSUED. CONTINUE TO MONITOR NOAA WEATHER RADIO ALL HAZARDS
FOR THE LATEST WEATHER INFORMATION.

&&

LAT...LON 3248 8046 3248 8047 3245 8047 3244 8046
      3243 8047 3235 8096 3256 8101 3276 8060
      3249 8045
TIME...MOT...LOC 2241Z 252DEG 29KT 3249 8084

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
645 PM EDT THU APR 05 2012

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

0640 PM     HAIL             RIDGELAND               32.48N  80.98W
04/05/2012  E0.70 INCH       JASPER             SC   PUBLIC

            PUBLIC REPORT OF DIME SIZE HAIL AND SMALL BRANCHES
            DOWN.

&&

EVENT NUMBER CHS1200085

VB

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
714 PM EDT THU APR 5 2012

SCZ043-044-060000-
DORCHESTER-INLAND COLLETON-
714 PM EDT THU APR 5 2012

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF DORCHESTER AND
COLLETON COUNTIES THROUGH 800 PM EDT...

AT 710 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS...ALONG A LINE EXTENDING FROM 8 MILES NORTH OF
PADGETTS TO NEYLES...MOVING NORTHEAST AT 35 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
CANADYS...COTTAGEVILLE...DORCHESTER...GIVHANS...GIVHANS FERRY STATE
PARK...HARLEYVILLE...INDIAN FIELD...JEDBURG...KNIGHTSVILLE...
PADGETTS...REEVESVILLE...RIDGEVILLE...RITTER...ROUND O...RUFFIN...
SAINT GEORGE...SLANDS BRIDGE...SMOAKS...WALTERBORO AND WILLIAMS...

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH IS ALSO IN EFFECT. THUNDERSTORMS CAN
PRODUCE LARGE HAIL...DAMAGING WINDS...AND ISOLATED TORNADOES
SUDDENLY...SOMETIMES WITH LITTLE OR NO WARNING. BE ALERT FOR RAPIDLY
CHANGING WEATHER CONDITIONS AND BE READY TO ACT QUICKLY IF SEVERE
WEATHER IS OBSERVED OR A WARNING IS ISSUED.

BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.
BE READY TO TAKE IMMEDIATE ACTION IN CASE A SEVERE THUNDERSTORM
WARNING IS ISSUED FOR YOUR LOCATION.

&&

LAT...LON 3329 8048 3326 8041 3316 8032 3315 8032
      3294 8012 3285 8032 3286 8040 3281 8041
      3273 8058 3308 8090 3310 8089 3313 8090
      3334 8050
TIME...MOT...LOC 2314Z 246DEG 29KT 3320 8087 3284 8054

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
733 PM EDT THU APR 05 2012

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

0651 PM     TSTM WND DMG     SHELDON                 32.60N  80.80W
04/05/2012                   BEAUFORT           SC   FIRE DEPT/RESCUE

            3 TO 4 TRESS DOWN IN THE SHELDON AREA. TIME BASED ON
            RADAR.

&&

EVENT NUMBER CHS1200086

VB