NOAA>NWS>NCEP>OPC>N Atlantic Marine Discussion

                   
                     
053 
AGNT40 KWNM 272023
MIMATN

MARINE WEATHER DISCUSSION 
NWS OCEAN PREDICTION CENTER WASHINGTON DC
324 PM EDT THU 27 AUG 2009 

.FORECAST DISCUSSION: MAJOR FEATURES/WINDS/SEAS/SIGNIFICANT 
.WEATHER FOR NORTH ATLANTIC OCEAN W OF 50W FROM 30N TO 50N. 

A STATIONARY FRONT EXTENDS W TO E ACROSS THE N NT2 WATERS. N OF 
THE FRONT WINDS WERE N TO NE 5 TO 15 KT WHILE IN THE VICINITY OF 
THE FRONT TO S TO HATTERAS CANYON SW 10 TO 20 KT. ELSEWHERE S OF 
HATTERAS CANYON WINDS HAD BECOME E TO NE 10 TO 20 KT. SEAS 3 TO 
5 FT FROM THE GULF OF MAINE TO BALTIMORE CANYON AND 4 TO 8 FT S 
OF BALTIMORE CANYON WITH THE HIGHEST SEAS OVER THE SE NT2 
WATERS. 

TROPICAL STORM DANNY CONTINUES S OF THE WATERS. DANNY WILL MOVE 
TO THE NW TONIGHT AND FRI AND THEN TURN N TO NE SAT AND SUN 
PASSING ACROSS THE OFFSHORE WATERS. DANNY WILL REMAIN A TROPICAL 
STORM THROUGH THE NEXT 2-3 DAYS. WHILE DANNY IS EXPECTED TO BE 
SLIGHTLY WEAKER THE TRACK REMAINS ABOUT THE SAME. DANNY WILL 
MOVE PASSING E OF THE NT1 WATERS SUN THEN A COLD FRONT WILL MOVE 
SE INTO THE WATERS FROM THE NW. THE FRONT WILL STALL MON WITH A 
WEAK LOW DEVELOPING ON THE FRONT MON AND MOVING NE ACROSS THE 
AREA TUE. 

DANNY WILL BE THE PROBLEM FOR THIS FCST BUT TIMING FROM PREVIOUS 
PACKAGE IS GOOD. ONCE DANNY PASSES NO WARNINGS EXPECTED. 
FOLLOWED THE GFS TODAY BUT LATE WILL NOT BE AS STRONG IN THE NE 
FLOW AS THE LOW TRAVELS NE ALONG THE FRONT TUE. 

FOR SEAS WILL USE PREVIOUS PACKAGE AND HURRICANE VERSION OF WAVE 
WATCH. LATER THE WNA IS GOOD AS WINDS AND SEAS DIMINISHING WITH 
DANNY PASSING NE OF THE AREA. THE LONG PERIOD SWELL FROM DANNY 
IS REACHING PORTION OF THE OFFSHORE WATERS S OF HATTERAS CANYON 
AND WILL SPREAD N TO CAPE COD BY FRI MORNING AND LATER INTO THE 
GULF OF MAINE. 

.WARNINGS/FORECAST CONFIDENCE...WARNINGS ARE PRELIMINARY AND ARE 
SUBJECT TO CHANGE. ANY CHANGES WILL BE COORDINATED THROUGH AWIPS 
12 PLANET CHAT OR BY TELEPHONE. 

.NT1 NEW ENGLAND WATERS... 
.GULF OF MAINE...TRPCL STORM SAT INTO SAT NGT. 
.GEORGES BANK...TRPCL STORM SAT INTO SAT NGT. 
.S OF NEW ENGLAND...TRPCL STORM SAT INTO SAT NGT. 

.NT2 MID ATLC WATERS... 
.HUDSON TO BALT CNYN...TRPCL STORM SAT. 
.BALT CNYN TO HAGUE LINE...TRPCL STORM SAT INTO SAT NGT. 
.BALT CNYN TO HATTERAS CNYN...TRPCL STORM FRI NGT INTO SAT. 
.HATTERAS CNYN TO CAPE FEAR...TRPCL STORM FRI INTO SAT. 
.CAPE FEAR TO 31N...TRPCL STORM TNGT INTO FRI NGT. 

.FORECASTER OSZAJCA. OCEAN FORECAST BRANCH.