000
AGXX40 KNHC 311727
MIMATS

MARINE WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1230 PM EST MON DEC 31 2007

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

TIGHTENING MID LEVEL GRADIENT TODAY OVER SRN CONUS AS COLD AIR 
SPILLS SWD. BROAD SFC RIDGE HOLDING FIRM WITH 1028 MB HIGH CENTER 
NEAR 31N52W BUT RIDGE ERODING ON NW SIDE. RIDGE PRODUCING NE TO E 
WINDS 20 TO 25 KT BETWEEN 50W AND 70W OVER ATLC AND CARIB E OF 80W. 
DIFFUSE STATIONARY FRONT OVER E CENTRAL GULF WITH LIGHT WINDS. 

TONIGHT SURGE OF COLD AIR ALOFT MOVING SE OVER CENTRAL PLAINS WILL 
CONTINUE TO LOWER HEIGHTS OVER DEEP SOUTH. MID LEVEL RIDGE SLIDING 
EWD IN RESPONSE TO TROUGHING. SFC FRONT DISSIPATES OVER GULF. COLD 
FRONT OVER TX PLUNGES SE. LITTLE CHANGE WITH ATLC RIDGE AND WINDS.

NEW YEARS DAY LARGE UPPER TROUGH CARVING OUT OVER ERN CONUS WITH MID 
LEVEL RIDGE FLATTENING OUT ALONG 20N. STRONG COLD FRONT MOVES RAPIDLY
SE OVER GULF WITH GALE CONDITIONS MOST SECTIONS. ATLC RIDGE SLOWLY 
WEAKENING AND TRADES DECREASE.

WEDNESDAY DEEP UPPER TROUGH MOVES TO ERN SEABOARD WITH AXIS ALONG 
76W. MID LEVEL RIDGE BUILDING RAPIDLY IN WAKE OF TROUGH OVER PLAINS. 
STRONG SFC WINDS 25 TO 30 KT W OF A COLD FRONT THAT MOVES TO BAHAMAS.
STRONG POLAR AIR MASS 1045 MB MOVING TO SE TX. ATLC RIDGE SLIDES EWD 
OF 40W WHILE OLD LOW CENTER OVER ERN ATLC MOVES WWD AND OPENS TO A 
TROUGH ALONG 52W WITH WINDS 20 TO 25 KT OVER NE QUADRANT.

THURSDAY FAST MOVING UPPER TROUGH SWINGS EWD OFF ERN SEABOARD AND 
LARGE UPPER RIDGE BEGINS TO FLATTEN OUT AS UPPER FLOW BECOMES WLY. 
SFC RIDGE MOVING SLOWLY EWD WITH STRONG NNE WINDS W OF A COLD FRONT 
TO 90W. FRONT MOVES TO 31N60W 20N70W. NW CARIB WINDS NE 25 TO 30 KT.

FRIDAY STRONG ZONAL FLOW OVER ERN CONUS WITH WEAKER MID LEVEL RIDGE 
OVER SW GULF. SFC HIGH MOVES TO SE COAST WITH WINDS REMAINING GUSTY 
20 TO 25 KT W OF COLD FRONT THAT MOVES TO 31N50W 18N62W. GULF WINDS 
TO 20 KT WITH RETURN FLOW SETTING UP W OF 90W. CARIB WINDS 20 TO 25 
KT ALL SECTIONS EXCEPT SE CORNER.

SATURDAY STRONG HIGH PRES MOVES OFF ERN SEABOARD. COLD FRONT BECOMES 
ILL DEFINED IN THE MID ATLANTIC BUT NE WINDS REMAIN MODERATE 20 KT W 
OF DISSIPATING FRONT. GULF WINDS CONTINUE 15 TO 20 KT IN E TO SE 
FLOW. CARIB WINDS 20 TO 25 KT EXCEPT E OF 70W.

WARNINGS...
ATLANTIC...
NONE.

CARIBBEAN...
NONE. 

GULF OF MEXICO...
GALE WARNING...S OF 28N W OF 90W...GMZ080 AND GMZ082.

FORECASTER MUNDELL