000
AGXX40 KNHC 211719
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
115 PM EDT FRI MAR 21 2008

MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND 
SOUTHWEST NORTH ATLC S OF 31N W OF 55W.

GULF OF MEXICO...SHORT WAVE TROUGH IS MOVING SLOWLY EWD INTO THE 
CENTRAL GULF OF MEXICO. THIS IS SUPPORTING A MODEST 1014 MB LOW 
PRES CENTER ON THE NE TIP OF YUCATAN. THE STRONG FRONT THAT 
MOVED THROUGH THE GULF OVER THE LAST COUPLE OF DAYS IS MUCH 
WEAKER AND REMAINS STATIONARY FROM THE LOW THROUGH THE STRAITS 
OF FLORIDA. THE UPPER TROUGH WILL DEAMPLIFY SLIGHTLY THROUGH SAT 
AS IT LIFTS SLOWLY NE...ALLOWING THE ASSOCIATED SURFACE LOW TO 
RIDE NE INTO FLORIDA. SCATTEROMETER DATA AND BUOYS SHOW FRESH 
ELY FLOW OVER THE EASTERN AND CENTRAL GULF BETWEEN THE LOW PRES 
AND 1027 MB HIGH PRES OVER THE CAROLINAS. THIS WILL DIMINISH 
TONIGHT INTO SAT AS THE WEAK LOW SHIFTS NE. MEANWHILE THE LARGE 
SCALE PATTERN OVER THE U.S. BECOMES MORE AMPLIFIED AS TROUGHING 
NOW OVER THE NRN ROCKIES DEEPENS THROUGH THE MISSISSIPPI VALLEY 
AHEAD OF A BROAD MID/UPPER RIDGE BUILDING OVER THE WESTERN U.S. 
THIS WILL PROMPT A WEAK FRONT TO GLIDE INTO THE NE GULF ON SAT. 
A STRONGER SHORT WAVE ROLLS OUT OF THE NRN PLAINS SAT AND PUSHES 
A REINFORCING FRONT INTO THE NW GULF ON SUN. WINDS AND SEAS WILL 
INCREASE OVER THE GULF FROM NW TO SE MON INTO TUE AS A 
RESULT...THEN DIMINISH TUE AS HIGH PRES BUILDS N OF THE AREA.

CARIBBEAN AND TROPICAL N ATLC...HIGH PRES OVER THE EASTERN U.S. 
IS THE MAIN DRIVER MAINTAINING STRONG ELY TRADES OVER THE 
CENTRAL CARIBBEAN...WITH THE STRONGEST WINDS IN THE USUAL SPOT 
OFF THE COLOMBIAN COAST. THESE WILL DIMINISH OVERALL THROUGH 
TONIGHT AS THE HIGH TO THE N WEAKENS...BUT THE AREA OF FRESH TO 
STRONG ELY TRADES WILL SHIFT MORE INTO THE EASTERN CARIBBEAN AS 
THE HIGH SHIFTS EWD. LARGE SWELL FILTERING THROUGH THE MONA AND 
ANEGADA PASSES OVER THE LAST COUPLE OF DAYS CONTINUES TO DECAY 
OVER THE EASTERN CARIBBEAN AND TROPICAL N ATLC THROUGH LATE SAT. 
ELY TRADES INCREASE OVER THE TROPICAL N ATLC EARLY NEXT WEEK AS 
HIGH PRES BUILDS OVER THE CENTRAL ATLC.

SW N ATLC...FRESH NE FLOW N OF A FRONT THAT MOVED OFF THE COAST 
EARLY YESTERDAY WILL DIMINISH THROUGH SAT AS HIGH PRES BUILDS 
ACROSS THE AREA. THE FRONT WILL WEAKEN AS IT MOVES NWD 
SAT...BEFORE ANOTHER WEAK FRONT PUSHES OFF THE U.S. SE COAST. ON 
SUNDAY SW WINDS AHEAD OF THIS FRONT WILL INCREASE...MAINLY N OF 
28N...AND FRESH NW FLOW WILL FOLLOW THE FRONT. WINDS AND SEAS 
QUICKLY DIMINISH MON AS THE FRONT SLOWS FROM ROUGHLY BERMUDA TO 
THE STRAITS OF FLORIDA. A REINFORCING FRONT WILL EMERGE OFF THE 
COAST ON MON...FOLLOWED BY STRONG NLY FLOW POSSIBLY SWEEPING 
THROUGH THE WHOLE AREA THROUGH TUE...THEN DIMINISHING WED 
ESPECIALLY N OF 26N AS HIGH PRES BUILDS BEHIND THE FRONT ALONG 
ROUGHLY 30N.

WARNINGS...
ATLANTIC...
NONE.

CARIBBEAN...
NONE.

GULF OF MEXICO...
NONE.

FORECASTER CHRISTENSEN