000
AGXX40 KNHC 040546
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
130 AM EDT SUN NOV 04 2007

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

SERIES OF STRONG SHORTWAVE TROUGHS DIVING SE OVER THE ERN CONUS 
TONIGHT. MID LEVEL FLOW TURNS MORE NWLY AFTER THE THIRD 
SHORTWAVE. MID LEVEL RIDGES OVER SW GULF EXTENDING E AND NE TO 
MID ATLC TONIGHT. ON THE SURFACE A WEAKENING COLD FRONT EXTENDS 
FROM 31N68W TO THE SE BAHAMAS AND NW CARIB. WINDS W OF FRONT 
DECREASING BUT STILL 20 KT S OF 25N. A 1027 MB HIGH OVER SE TX 
MOVING EWD. MODERATE HIGH OVER MID ATLC WITH 25 KT WINDS N OF 
27N E OF 60W. REMAINDER OF AREA WINDS MOSTLY 10 TO 15 KT. 

LATER DAY 1 MAJOR UPPER TROUGH AXIS ALONG 75W WITH NWLY FLOW W 
OF 80W. STRONG CLOSED UPPER LOW OVER ERN ATLC MOVING SLOWLY SWD 
ALONG 30W. INVERTED MID LEVEL TROUGH ALONG 60W S OF 25N. ON THE 
SURFACE LATER DAY 1 COLD FRONT GRADUALLY DISSIPATING ALONG 
31N65W TO SE BAHAMAS. A 1023 MB HIGH OVER NW GULF WILL MAINTAIN 
NE WINDS OF 20 KT S OF 24N W OF FRONT. MID ATLC RIDGE WEAKENING 
AND WINDS DECREASING TO 20 KT. LITTLE CHANGE ELSEWHERE.

FOR DAY 2 NEXT STRONG SHORTWAVE DROPPING SE OVER NW GREATLAKES 
WILL TIGHTEN THE MID LEVEL FLOW S OF 40N. WEAK CLOSED LOW OVER 
LEEWARDS STATIONARY. STRONG CLOSED VORTEX NEAR 30N33W 
STATIONARY. ON THE SURFACE DAY 2 LOW CENTER BENEATH ERN ATLC LOW 
NEAR 32N35W WILL PRODUCE 20 KT WINDS N OF 26N E OF 43W. A 1021 
MB HIGH MOVING E OVER N GULF WILL MAINTAIN NE WINDS OF 20 KT S 
OF 23N BETWEEN 73W AND 87W. LITTLE WIND PROBLEM REMAINDER OF 
AREA.

OUTLOOK PERIOD... 

FOR DAY 3 MID LEVEL HEIGHTS FALLING OVER ERN CONUS AS STRONG 
TROUGH MOVES SE. ERN ATLC CLOSED VORTEX NEAR 30N35W AND 
WEAKENING. ON THE SURFACE DAY 3 1003 MB LOW NEAR 30N35W WITH 
WINDS TO 20 KT N OF 25N E OF 45W. NEXT COLD FRONT MOVES TO NW 
GULF WITH WINDS TO 20 KT. OLD FRONT DISSIPATING OVER ATLC AND NW 
CARIB WATERS. LIGHT WINDS REMAINDER OF AREA.

FOR DAY 4 LARGE UPPER TROUGH ALONG 74W WITH STRONG NWLY FLOW 
ALOFT W OF 80W. A 1029 MB HIGH MOVES TO 33N93W WILL KEEP NLY 
WINDS TO 20 KT W OF COLD FRONT WHICH MOVES RAPIDLY EWD AND SE 
OVER NW CARIB. LIGHT WINDS REMAINDER OF AREA.

FOR DAY 5 LONG WAVE TROUGH SETTING UP WITH AXIS ALONG 75W. 
STRONG NWLY FLOW ALOFT W OF AXIS. ON THE SURFACE DAY 5 A 1022 MB 
HIGH MOVING E ALONG N GULF COAST. PRES GRADIENT WEAKENING W OF 
COLD FRONT AND WINDS DECREASING TO MOSTLY 10 TO 15 KT. WEAK 
GRADIENT ELSEWHERE AND WINDS MOSTLY LIGHT.

WARNINGS...
ATLC...
NONE.   

CARIBBEAN...
NONE. 

GULF OF MEXICO...
NONE.

FORECASTER RRG