000
AGXX40 KNHC 030631
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
130 AM EST THU JAN 03 2008
 
MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND 
SOUTHWEST NORTH ATLC S OF 31N W OF 55W.

VERY STRONG UPPER TROUGH SHIFTING E OFF THE ERN SEABOARD 
TONIGHT..SLIGHTLY REMINISCENT OF THE POWERFUL UPPER TROUGH BACK 
IN THE WINTER OF 76-77 THAT BROUGHT SNOW FLURRIES TO S FL. MID 
LEVEL RIDGE S OF 20N REBUILDING CENTER OVER MID ATLC NEAR 
29N48W. ALSO MID LEVEL RIDING BUILDING OVER PLAINS IN WAKE OF 
STRONG TROUGH. ON THE SURFACE 1046 MB ARCTIC HIGH OVER MID MS 
VALLEY MOVING SLOWLY EWD. COLD FRONT EXTENDS FROM 31N64W SW TO 
ERN CUBA TO NRN HONDURAS. GALE CONDITIONS W OF FRONT OVER GULF S 
OF 27N E OF 90W WITH 25 TO 30 KT ELSEWHERE W OF FRONT. SEAS 12 
TO 20 FT OVER EXPOSED AREAS W OF FRONT.

LATER DAY 1 UPPER TROUGH MAINTAINS AMPLITUDE AS IT MOVES E TO 
70W. STRONG ZONAL FLOW SETS IN OVER CENTRAL CONUS WASHING OUT 
RIDGE. WEAK SHORTWAVE OVER ERN TX MOVING E. ON THE SURFACE LATER 
DAY 1 COLD FRONT MOVES TO 31N60W SW T0 20N70W BACK INTO SW 
CARIB. N TO NE WINDS 25 TO 30 KT W OF FRONT TO 90W. 

FOR DAY 2 STRONG ZONAL MID LEVEL FLOW WISKS UPPER TROUGH EWD TO 
55W. ON THE SURFACE DAY 2 ARCTIC AIRMASS 1039 MB MOVING OFF CAR 
COAST WITH STRONG N AND NE WINDS W OF COLD FRONT TO 90W. CARIB 
WINDS NE 25 TO 30 KT. 

OUTLOOK PERIOD...

FOR DAY 3 WEAK SHORTWAVE TROUGH ALONG 72W MOVING E IN FAIRLY 
STRONG ZONAL MID LEVEL FLOW. ON THE SURFACE DAY 3 ARCTIC AIRMASS 
SLOWLY MODIFYING AS IT MOVES OVER ATLC WATERS. 1034 MB CENTER 
NEAR 33N66W. NE TO E WINDS 20 TO 25 KT BETWEEN 50W AND 90W AND 
OVER CARIB.

FOR DAY 4 MID LEVEL RIDGING BUILDING ALONG 85W WITH MID LEVEL 
FLOW BECOMING SWLY OVER PLAINS. ON THE SURFACE DAY 4 ARCTIC AIR 
CONTINUES MODIFYING BUT WILL MAINTAIN NE AND E WINDS 20 TO 25 KT 
ATLC WATERS. CARIB AND GULF WINDS MOSTLY TO 20 KT. 

FOR DAY 5 MID LEVEL RIDGE BUILDS N ALONG SE COAST AS SHORTWAVE 
STRENGTHENS ALONG 65W. ON THE SURFACE DAY 5 HIGH PRES OVER ATLC 
WILL MAINTAIN ELY WINDS 20 KT MOST SECTIONS AND CARIB. RETURN 
FLOW SETS UP OVER GULF W OF 90W AS PRESSURES FALL OVER PLAINS. 

WARNINGS...
ATLANTIC...
NONE.

CARIBBEAN...
GALE WARNING...W OF A COLD FRONT...AMZ082. 

GULF OF MEXICO...
GALE WARNING...S OF 27N E OF 90W..GMZ084 AND GMZ086.

FORECASTER RRG