000
AGXX40 KNHC 191840
MIMATS

MARINE WEATHER DISCUSSION 
NWS NATIONAL HURRICANE CENTER MIAMI FL 
240 PM EDT TUE MAR 19 2013

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

GULF OF MEXICO...                                                
DIVERGENT FLOW ALOFT ASSOCIATED WITH AN UPPER LEVEL TROUGH OVER 
THE E GULF OF MEXICO CONTINUES TO TRIGGER WIDESPREAD SHOWERS AND 
ISOLATED TSTMS IN THE SE GULF AND ACROSS THE FLORIDA PENINSULA. 
A COLD FRONT EXTENDS FROM THE FLORIDA PANHANDLE TO NE MEXICO 
NEAR 25N98W. THE FRONT WILL REACH FROM TAMPA BAY TO NEAR TAMPICO 
MEXICO THIS EVENING THEN STALL THROUGH EARLY WED. REINFORCING 
COLD AIR WILL OVERTAKE THE FRONT AND MERGE WITH THE STATIONARY 
BOUNDARY BY WED AFTERNOON WITH FRESH TO STRONG N-NE WINDS BEHIND 
IT. THE STRONGER FRONT WILL EXTEND FROM SW FLORIDA TO VERACRUZ 
MEXICO WED EVENING THEN MOVE SE OF THE REGION THU. HIGH PRES 
OVER THE NE GULF FRI AND SAT WILL ALLOW SOUTHERLY RETURN FLOW TO 
DEVELOP ACROSS THE REGION THIS WEEKEND. LATEST GFS MODEL FORECAST
SHOWS A COLD FRONT REACHING THE NW GULF SUN MORNING AND SPREADING
SE ACROSS THE REMAINDER OF THE GULF THROUGH MON.
                                           
CARIBBEAN SEA AND TROPICAL N ATLC S OF 22N W OF 55W...           
FRESH TO STRONG TRADE WINDS IN THE CENTRAL CARIBBEAN WILL WEAKEN 
SIGNIFICANTLY THROUGH FRI AS HIGH PRES N OF THE AREA SHIFTS E. 
FRESH SE WINDS IN THE GULF OF HONDURAS ARE EXPECTED TO REDEVELOP 
FRI NIGHT AND SAT AS HIGH PRES BUILDS OVER THE SW NORTH ATLC. A 
WEAKENING COLD FRONT WILL REACH THE NW CARIBBEAN THU MORNING 
THEN BECOME STATIONARY ALONG 21N THU AND LIFT N OF THE AREA AS A 
WARM FRONT FRI. NORTHERLY SWELLS IN THE TROPICAL N ATLC AND NE 
CARIBBEAN PASSAGES WILL CONTINUE TO SUBSIDE THROUGH WED. GENTLE 
TO MODERATE TRADES AND BENIGN MARINE CONDITIONS ARE EXPECTED TO 
PREVAIL ACROSS THE REGION WED THROUGH SAT. WINDS WILL INCREASE 
IN THE CENTRAL CARIBBEAN SUN AS HIGH PRES BUILDS NE OF THE AREA.

SW N ATLC S OF 31N W OF 55W...                                  
A RIDGE OF HIGH PRES ALONG 29N CONTINUES TO SHIFT EASTWARD WITH 
MAINLY MODERATE ANTICYCLONIC WINDS AROUND IT ACROSS THE REGION. 
A FAIRLY WEAK FRONT WILL STALL FROM 31N75W TO NORTHERN BAHAMAS 
THIS EVENING THROUGH WED MORNING. REINFORCING SURGE OF COLD AIR 
WILL OVERTAKE THE STATIONARY FRONT WED AFTERNOON...REACHING FROM 
BERMUDA TO THE FLORIDA STRAITS THU MORNING...THEN MOVE E OF THE 
REGION FRI. FRESH TO STRONG WINDS ARE EXPECTED ON EITHER SIDE OF 
THE FRONT N OF 28N THU...WITH WINDS APPROACHING 30 KT NEAR 31N E 
OF THE FRONT. HIGH PRES WILL DOMINATE THE REGION FRI AND SAT... 
WHILE OCCASIONAL SURGES OF COLD AIR ROTATING AROUND A BROAD AREA 
OF LOW PRES CENTERED N OF THE AREA SKIRT THE NE PORTION OF AREA 
AS FRONTAL TROUGHS.
 
NOTE...GRIDDED MARINE FORECAST IS AVAILABLE AT 
WWW.NHC.NOAA.GOV/TAFB/GRIDDED_MARINE

WARNINGS...

GULF OF MEXICO...
.NONE.

CARIBBEAN SEA AND TROPICAL N ATLC...
.NONE.

SW N ATLC...
.NONE.

FOR ADDITIONAL INFORMATION PLEASE VISIT
WWW.HURRICANES.GOV/MARINE

$$
FORECASTER MUNDELL