000
AGXX40 KNHC 260700
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
300 AM EDT FRI JUL 26 2013

MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN
SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND
64W...AND THE SW N ATLANTIC INCLUDING THE BAHAMAS.

...GULF OF MEXICO...                                        
MODEL PREFERENCE: GFS/ECMWF/OFFICIAL BLEND WITH GOOD CONFIDENCE.

WEAK RIDGE ALONG 26N WILL SLOW SOUTHWARD INTRUSION OF A WEAK PRE-
FRONTAL TROUGH ALONG N GULF COAST TODAY WHILE A STATIONARY FRONT 
OVER THE GULF STATES LIFTS NORTHWARD SAT. FAIRLY LIGHT WINDS ARE 
EXPECTED MOST OF THE REGION EXCEPT STRONGER E-SE BREEZE EXPECTED 
ALONG COAST OF TEXAS AND IN EXTREME NORTHERN PORTION ALONG THE 
DISSIPATING TROUGH BOUNDARY. FORECAST GUIDANCE IN GOOD AGREEMENT 
AND LITTLE CHANGE IS EXPECTED THROUGH THE FORECAST PERIOD. SEAS 
SHOULD REMAIN 3 FT OR LESS THROUGH TUE.

...CARIBBEAN SEA AND TROPICAL N ATLANTIC...                    
MODEL PREFERENCE: GFS/ECMWF/OFFICIAL BLEND WITH GOOD CONFIDENCE. 
NWPS WAS FOR WAVE HEIGHT AND WAVE PERIOD.

ATLC HIGH PRES WELL N OF AREA EXTENDS RIDGING INTO CARIBBEAN 
BEHIND A TROPICAL WAVE MOVING ACROSS THE YUCATAN PENINSULA... 
ALLOWING FRESH TO STRONG WINDS TO CONTINUE OVER OVER MUCH OF THE 
CENTRAL CARIBBEAN...WITH SCATTEROMETER DATA SHOWING 30 KT WINDS 
NEAR THE COAST OF COLOMBIA. THE RIDGE N OF AREA WILL WEAKEN AS 
T.S. DORIAN TRACKS INTO THE SW N ATLC...AND A MUCH WEAKER PRES 
GRADIENT WILL RESULT IN DIMINISHING WINDS AND SEAS THROUGH EARLY 
NEXT WEEK. AS DORIAN APPROACHES NE CARIBBEAN LATE SUN/EARLY MON. 
SEAS MAY BUILD TO 11 FT THROUGH ANEGADA AND OTHER ATLC PASSAGES.

...SW N ATLANTIC W OF 55W INCLUDING THE BAHAMAS...               
MODEL PREFERENCE: GFS/OFFICIAL BLEND WITH MODERATE CONFIDENCE.

WEAK PRE-FRONTAL TROUGH OFF NE FLORIDA WILL STALL TODAY WHILE A 
STATIONARY FRONT OVER THE S.E. U.S. LIFTS NE THROUGH SAT. HIGH 
PRES RIDGE ALONG 28N WILL PERSIST THROUGH SUN THEN RETREAT E AS 
T.S. DORIAN IN THE CENTRAL ATLC MOVES CLOSER TO LEEWARD ISLANDS 
SAT NIGHT AND SUN...AND N OF THE VIRGIN ISLANDS AND PUERTO RICO 
TOWARD SOUTHERN BAHAMAS AND TURKS AND CAICOS THROUGH TUE. REFER 
TO LATEST FORECAST/ADVISORY AWIPS/WMO HEADERS MIATCMAT4/WTNT24 
KNHC AND PUBLIC ADVISORY AWIPS/WMO HEADERS MIATCPAT4/WTNT34 KNHC 
FOR MORE DETAILS ON TROPICAL STORM DORIAN.

$$

.WARNINGS...ANY CHANGES IMPACTING COASTAL NWS OFFICES WILL BE
COORDINATED THROUGH AWIPS 12 PLANET CHAT OR BY TELEPHONE:

.GULF OF MEXICO...
GMZ011...NONE.
GMZ013...NONE.
GMZ015...NONE.
GMZ017...NONE.
GMZ019...NONE.
GMZ021...NONE.
GMZ023...NONE.
GMZ025...NONE.

.CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN
55W AND 64W...
AMZ011...NONE.
AMZ013...NONE.
AMZ015...NONE.
AMZ017...NONE.
AMZ019...NONE.
AMZ021...NONE.
AMZ023...NONE.
AMZ025...NONE.
AMZ027...NONE.
AMZ029...NONE.
AMZ031...NONE.
AMZ033...NONE.
AMZ035...NONE.
AMZ037...NONE.
AMZ039...NONE.

.SW N ATLANTIC INCLUDING THE BAHAMAS...
AMZ111...NONE.
AMZ113...NONE.
AMZ115...NONE.
AMZ117...NONE.
AMZ119...NONE.
AMZ121...NONE.
AMZ123...NONE.
AMZ125...NONE.
AMZ127...NONE.

*FOR DETAILED ZONE DESCRIPTIONS PLEASE VISIT:
HTTP://WWW.NHC.NOAA.GOV/ABOUTTAFBPROD.SHTML#OWF

NOTE: GRIDDED MARINE FORECASTS ARE AVAILABLE IN THE
NATIONAL DIGITAL FORECAST DATABASE (NDFD) AT:
HTTP://WWW.NHC.NOAA.GOV/MARINE/GRIDS.PHP

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

$$
.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.