Small Craft Advisory 75, NWS Charleston, SC

901 
WHUS72 KCHS 241138
MWWCHS

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
638 AM EST SAT DEC 24 2011

AMZ374-241945-
/O.CON.KCHS.SC.Y.0075.111224T2100Z-111225T1500Z/
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
638 AM EST SAT DEC 24 2011

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 10 AM EST SUNDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON
TO 10 AM EST SUNDAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS AND OR SEAS ARE EXPECTED
TO PRODUCE HAZARDOUS NAVIGATING CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS...SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

232 
WHUS72 KCHS 241549
MWWCHS

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
1049 AM EST SAT DEC 24 2011

AMZ374-250000-
/O.CON.KCHS.SC.Y.0075.111224T2100Z-111225T1500Z/
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
1049 AM EST SAT DEC 24 2011

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 10 AM EST SUNDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON
TO 10 AM EST SUNDAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS AND OR SEAS ARE EXPECTED
TO PRODUCE HAZARDOUS NAVIGATING CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS...SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

978 
WHUS72 KCHS 242044
MWWCHS

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
344 PM EST SAT DEC 24 2011

AMZ374-250445-
/O.CON.KCHS.SC.Y.0075.111224T2100Z-111225T1500Z/
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
344 PM EST SAT DEC 24 2011

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST
SUNDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST SUNDAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS AND OR SEAS ARE EXPECTED
TO PRODUCE HAZARDOUS NAVIGATING CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS...SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

690 
WHUS72 KCHS 250209
MWWCHS

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
909 PM EST SAT DEC 24 2011

AMZ374-251015-
/O.CON.KCHS.SC.Y.0075.000000T0000Z-111225T1500Z/
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
909 PM EST SAT DEC 24 2011

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST
SUNDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST SUNDAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS AND OR SEAS ARE EXPECTED
TO PRODUCE HAZARDOUS NAVIGATING CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS...SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

382 
WHUS72 KCHS 250816
MWWCHS

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
316 AM EST SUN DEC 25 2011

AMZ374-251500-
/O.CON.KCHS.SC.Y.0075.000000T0000Z-111225T1500Z/
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
316 AM EST SUN DEC 25 2011

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST THIS
MORNING...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST THIS
MORNING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS AND OR SEAS ARE EXPECTED
TO PRODUCE HAZARDOUS NAVIGATING CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS...SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

760 
WHUS72 KCHS 251138
MWWCHS

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
638 AM EST SUN DEC 25 2011

AMZ374-251500-
/O.CON.KCHS.SC.Y.0075.000000T0000Z-111225T1500Z/
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
638 AM EST SUN DEC 25 2011

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST THIS
MORNING...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST THIS
MORNING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS AND OR SEAS ARE EXPECTED
TO PRODUCE HAZARDOUS NAVIGATING CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS...SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

124 
WHUS72 KCHS 251450
MWWCHS

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
950 AM EST SUN DEC 25 2011


AMZ374-251600-
/O.EXP.KCHS.SC.Y.0075.000000T0000Z-111225T1500Z/
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
950 AM EST SUN DEC 25 2011

...SMALL CRAFT ADVISORY WILL EXPIRE AT 10 AM EST THIS MORNING...

THE SMALL CRAFT ADVISORY WILL EXPIRE AT 10 AM EST THIS MORNING. 

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHARLESTON SC
117 AM EST SAT DEC 24 2011

.SYNOPSIS...
A COLD FRONT WILL PUSH OFFSHORE TONIGHT. THE FRONT WILL STALL
SOUTH OF THE REGION BY SATURDAY AND LINGER NEARBY THROUGH THE
WEEKEND. LOW PRESSURE DEVELOPING IN THE NORTHERN GULF OF MEXICO
WILL LIFT THE BOUNDARY NORTHWARD AS A WARM FRONT EARLY NEXT WEEK.
THE LOW PRESSURE SYSTEM WILL TRACK NORTHEAST UNTIL MIDWEEK...BEFORE
HIGH PRESSURE BUILDS INTO THE REGION THROUGH THE LATTER PART OF
THE WEEK.

&&

.NEAR TERM /UNTIL 6 AM THIS MORNING/...
A POST FRONTAL TROUGH...ACCOMPANIED BY AN INCREASE IN COLD
ADVECTION /ALBEIT RATHER WEAK/ AND SHIFTING OF WINDS TO THE NORTH
AND NE WILL CONTINUE TO MOVE S OVERNIGHT. MIN TEMP READINGS INTO
40S ACROSS MOST INTERIOR SECTIONS...AND EVEN TO THE LOWER AND
MIDDLE 50S NEAR THE COAST. QUITE A CHANGE INDEED FROM LAST NIGHT.
THE BULK OF THE LOW/MID LEVEL CLOUDS IN WAKE OF THE COLD FRONT
WILL STAY SE OF THE FORECAST AREA...ALTHOUGH SOME ALTOCUMULUS WILL
STILL SKIRT SECTIONS NEAR THE ALTAMAHA RESULTING IN OCCASIONAL
MOSTLY CLOUDY SKIES. BUT ELSEWHERE MOST OF THE CLOUDINESS WILL BE
JET STREAM CIRRUS...SO NO WORSE THAN PARTLY CLOUDY CONDITIONS WILL
PREVAIL.

&&

.SHORT TERM /6 AM THIS MORNING THROUGH MONDAY/...
SATURDAY...WILL KEEP RAIN CHANCES BELOW 15 PERCENT FOR SATURDAY...AS
THE COLD FRONT CONTINUES TO SLIP SOUTH/SOUTHEAST FARTHER INTO THE
COASTAL WATERS. FRONTAL PROGRESSION WILL THEN STALL OFFSHORE...AS
THE BOUNDARY BECOMES PARALLEL TO FLAT RIDGING ALOFT. DESPITE
NORTHEAST SURFACE FLOW BEHIND THE FRONT ON SATURDAY...LACKING ANY
UPPER TROUGH AND MAINTAINING A WESTERLY LOW LEVEL FLOW...EXPECT
TEMPERATURES TO STILL RISE ABOVE SEASONAL NORMALS. HIGH TEMPERATURES
WILL RANGE FROM THE MID 60S NEAR THE SOUTH SANTEE RIVER TO AROUND 70
DEGREES AT THE ALTAMAHA IN SOUTHEAST GEORGIA. LOW TEMPERATURES WILL
FALL INTO THE 40S...AND ALTHOUGH SEVERAL DEGREES COOLER THAN
PREVIOUS NIGHTS...WILL STILL ABOVE SEASONAL NORMALS.

SUNDAY...A CLOSED UPPER LOW WILL CONTINUE TO MEANDER OVER THE
SOUTHERN PLAINS ON SUNDAY...EJECTING PIECES OF SHORTWAVE ENERGY
ACROSS ZONAL FLOW TOWARD THE SOUTHEAST COAST. A COMBINATION OF
WEAK FORCING FROM THIS ENERGY ALOFT AND THE WAVERING SURFACE
BOUNDARY ALONG THE COAST COULD SUPPORT ISOLATED TO SCATTERED
SHOWER ACTIVITY OVER THE FORECAST AREA ON SUNDAY. ALTHOUGH MODELS
INDICATE A DECENT RIBBON OF DEEP MOISTURE AND SOME WEAK ISENTROPIC
ASCENT ASSOCIATED WITH THESE FEATURES...THERE IS STILL SOME
UNCERTAINTY AS TO THE COVERAGE AND PERSISTENCE OF ANY PRECIPITATION.
THUS PREFER TO CAP RAIN CHANCES BELOW 35 PERCENT AT THIS POINT AND
INDICATE THICKENING CLOUD COVER FOR SUNDAY. THE COOLING TREND WILL
CONTINUE INTO SUNDAY...WITH HIGH TEMPERATURES SUPPRESSED IN THE
LOW TO MID 60S.

MONDAY...THE FORECAST AREA WILL BECOME LOCATED BETWEEN SURFACE
HIGH PRESSURE DIGGING INTO THE REGION FROM THE NORTH/NORTHWEST AND
A SURFACE WAVE DEVELOPING IN THE GULF OF MEXICO DOWNSTREAM OF THE
SHIFTING UPPER LOW. THE LINGERING BOUNDARY OFFSHORE WILL GRADUALLY
LIFT INTO THE FORECAST AREA AS A WARM FRONT AHEAD OF THE SYSTEM.
MORE ABUNDANT SHORTWAVE ENERGY WILL SLIP INTO THE SOUTHEAST STATES
AHEAD OF THE OPENING UPPER LOW SWINGING INTO THE OHIO VALLEY LATE.
ALTHOUGH THERE WILL LIKELY BE A LULL IN PRECIPITATION LATE SUNDAY
NIGHT INTO EARLY MONDAY...ISOLATED SHOWER ACTIVITY IS EXPECTED TO
INCREASE FROM THE SOUTHWEST LATER MONDAY ONCE THE LOW SYSTEM
DEVELOPS AND MOVES NORTHWARD. THE MAIN PUSH OF THE WARM FRONT IS
NOT EXPECTED UNTIL MORE MONDAY NIGHT AND TUESDAY...THUS
TEMPERATURES WILL LIKELY RANGE AROUND SEASONAL NORMALS IN THE
UPPER 50S TO LOW 60S WITHIN THIS TRANSITION DAY.

&&

.LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
THE MAIN ACTIVITY IN THE LONG TERM PERIOD WILL OCCUR EARLY ON AS A
LOW PRESSURE SYSTEM AND ASSOCIATED COLD FRONT APPROACH THE AREA FROM
THE WEST MONDAY NIGHT/TUESDAY. THIS SYSTEM IS EXPECTED TO PULL AWAY
FROM THE AREA INTO WEDNESDAY HIGH PRESSURE AND DRIER AIR BUILDING IN
THROUGH THE LATTER PART OF THE WEEK. A BIG COOL DOWN DOES NOT APPEAR
TO BE IN STORE BEHIND THE DEPARTING SYSTEM AND TEMPERATURES WILL RUN
RIGHT AROUND NORMAL THROUGH MUCH OF THE PERIOD.

&&

.AVIATION /06Z SATURDAY THROUGH WEDNESDAY/...
VFR THROUGH 06Z/25 AT KSAV AND KCHS.

EXTENDED AVIATION OUTLOOK...MVFR OR LOWER CONDITIONS ARE POSSIBLE
SUNDAY AND SUNDAY NIGHT. ANOTHER SYSTEM WILL THEN AFFECT THE AREA
ON TUESDAY. OTHERWISE VFR CONDITIONS ARE EXPECTED TO PREVAIL.

&&

.MARINE...
MODEST COLD ADVECTION AND A TIGHTENING PRESSURE GRADIENT IN WAKE
OF A POST COLD FRONTAL TROUGH WILL SUPPORT WINDS VEERING TO THE
N/NE AND INCREASING INTO THE 15-20 KT RANGE BY DAYBREAK. SEAS WILL
NOT HAVE TIME TO BUILD ANY MORE THAN 3 OR 4 FT.

SATURDAY THROUGH WEDNESDAY...A NORTHEAST SURGE WILL OCCUR BEHIND A
DEPARTING COLD FRONT AND AHEAD OF HIGH PRESSURE TO THE NORTH ON
SATURDAY. ALTHOUGH A FEW OCCASIONAL GUSTS ABOVE 20 KT ARE
POSSIBLE IN THE OUTER GEORGIA WATERS DURING THIS SURGE...LATEST
INDICATIONS ARE THAT WINDS WILL REMAIN BELOW SMALL CRAFT ADVISORY
CONDITIONS. BUILDING SEAS COULD BE MORE OF AN ISSUE...AS
PERSISTENT NORTHEAST FETCH ALLOWS WAVE HEIGHTS TO RISE TO 6 FT
BEYOND 20 NAUTICAL MILES. CONFIDENCE IN THE TIMING OF ONSET OF
THESE HIGHER SEAS IS NOT HIGH ENOUGH TO ISSUE A SMALL CRAFT
ADVISORY FOR THE SECOND FORECAST PERIOD AT THIS POINT. MODEL
TRENDS WILL BE MONITORED AND SUBSEQUENT SHIFTS MAY NEED TO RAISE
AN ADVISORY IF FORECAST STAYS ON TRACK.

THE COLD FRONT WILL LINGER IN THE VICINITY OF THE COASTAL WATERS
SUNDAY BEFORE BEGINNING TO DRIFT NORTHWARD MONDAY INTO TUESDAY.
ANOTHER SURGE IS POSSIBLE ON MONDAY AS A SECONDARY SURFACE HIGH
PASSES BY TO THE NORTH. WINDS WILL THEN VEER AROUND TO MORE
SOUTHERLY AHEAD OF AN APPROACHING LOW PRESSURE SYSTEM FOR
TUESDAY. THE MAIN THREAT AREA FOR ADVISORIES WILL BE THE OUTER
GEORGIA WATERS WHERE SEAS TO 6 FT WILL BE MOST LIKELY.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
SC...NONE.
MARINE...NONE.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHARLESTON SC
409 AM EST FRI DEC 23 2011

AMZ330-350-352-354-374-GAZ087-088-099>101-114>119-137>141-SCZ040-
042>045-047>052-240915-
CHARLESTON HARBOR-
WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20 NM-
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-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-JENKINS-SCREVEN-CANDLER-BULLOCH-EFFINGHAM-TATTNALL-EVANS-
INLAND BRYAN-COASTAL BRYAN-INLAND CHATHAM-COASTAL CHATHAM-LONG-
INLAND LIBERTY-COASTAL LIBERTY-INLAND MCINTOSH-COASTAL MCINTOSH-
ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND BERKELEY-
INLAND JASPER-BEAUFORT-COASTAL COLLETON-CHARLESTON-COASTAL JASPER-
TIDAL BERKELEY-
409 AM EST FRI DEC 23 2011

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

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.