000 AGXX40 KNHC 080727 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 327 AM EDT Sun Sep 8 2019 Marine Weather Discussion for the Gulf of Mexico, Caribbean Sea, and Tropical North Atlantic from 07N to 19N between 55W and 64W and the Southwest North Atlantic including the Bahamas ...GULF OF MEXICO... Weak high pressure will remain over the area through next week, with mainly gentle to moderate winds expected, except for occasionally fresh winds near the Yucatan Peninsula. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... Weak high pressure ridging will north of the area will be replaced by stronger high pressure that builds southward over the western Atlantic and the U.S. eastern seaboard during the early part of the upcoming week. This will happen as pair of tropical waves move through the central and western Caribbean. The tighter pressure gradient induced between these wave and the stronger high pressure will lead to increasing trades in the south-central Caribbean and near and along the coast of Colombia beginning Mon afternoon. These winds are expected to reach the fresh to strong range through Wed night before diminishing to mainly fresh speeds through the remainder of the period. Wave heights are forecast to build to 8 ft near the coast of Colombia Tue night and subsiding to just below 8 ft during Wed afternoon. Elsewhere, mainly moderate trade winds will continue through late in the upcoming week. A tropical wave will move through the tropical N Atlantic waters tonight through early Mon evening, then across the eastern Caribbean Sea Tue through early Wed and across the eastern part of central Caribbean Thu and Thu night. Scattered showers and thunderstorms will accompany this wave. ...SW N ATLANTIC INCLUDING THE BAHAMAS... A rather well-defined low-level trough, induced by a prominent upper- level trough that stretches from a small cyclonic circulation near 33N48.5W to another one in the eastern Caribbean Sea near 16N66W, will translate westward from E to W across the forecast waters through the end of the upcoming week, possibly reaching the Florida peninsula late in the week. Model moisture guidance suggest that this trough will be followed by very deep tropical moisture, with good chances for enhanced convection to affect much of the waters from the Bahama Islands to the coast of Florida beginning around Tue. In addition, according to the latest Tropical Weather Outlook issued by the NHC, environmental conditions could be become more conducive for development of this feature by mid-week. Otherwise, weak high pressure in place over the area will be nudged northward by the aforementioned trough beginning on Wed, except in the far western sections where strong ridging will build southward from the western Atlantic and eastern U.S. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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.nhc.noaa.gov/marine $$ .Forecaster Aguirre. National Hurricane Center.