000 AGXX40 KNHC 121800 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 200 PM EDT Thu Oct 12 2017 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... A stationary front extends from the Florida Panhandle near 30N86W to the Texas Coastal Bend near 27N96W to the Bay of Campeche near 19N94W. The front will remain in place today then dissipate from north to south tonight. Residual surface roughing will linger over the SW Gulf Fri night and Sat. Expect fresh to strong winds and seas of 6 to 9 ft west of the front and south of 21N this afternoon. A broad surface trough extends northeast from a weak surface low centered along the coast of central Cuba near 23N79W. The trough will track westward into the SE Gulf on Friday and continue westward toward the western Gulf through Sunday. This trough will be accompanied by an increase in showers and thunderstorms, and a freshening of easterly winds. Elsewhere winds and seas should remain tranquil throughout the next several days. A new cold front should reach the northwestern Gulf on Sunday night and introduce strong to near-gale force winds to the westernmost Gulf by Monday afternoon. The cold front will also cause the surface trough arriving from the eastern Gulf to lose identity by Tuesday. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... A weak tropical wave currently over the south central Caribbean will enter the SW Caribbean by Friday and enter Central America on Saturday. The wave will be accompanied by scattered showers and isolated thunderstorms. Some enhancement of the trades to fresh or strong speeds and seas building to as high as 8 ft is expected north of Colombia Friday night through Sunday night as the surface rough to the north moves west. A more robust tropical wave currently near 49W/52W will reach the forecast waters along 55W Friday, then enter the eastern Caribbean on Sat. While attendant winds should remain 20 kt or less and seas in the vicinity of the wave less than 8 ft, the wave should enhance shower and thunderstorm activity as it progresses westward. Elsewhere winds and seas will remain relatively tranquil throughout the period. ...SW N ATLANTIC INCLUDING THE BAHAMAS... A broad surface trough with an axis extending N from central Cuba to Andros Island to well NE of Eleuthera near 29N71W will continue moving W toward the Florida Peninsula and Florida Straits tonight and Friday. The trough will enter the gulf of mexico on Saturday. This trough will team with strong high pressure to the N to generate winds near 20 kt and seas to 8 ft just N of the Bahamas this afternoon. Expect scattered to numerous showers and thunderstorms as well as gusty winds and briefly building seas in the vicinity of this trough. After the trough and associated weather exits the area Friday night, fresh easterly winds will linger off the northern Florida coast through the upcoming weekend. Elsewhere, light to moderate winds and seas of 3 to 5 ft will generally prevail through Monday night. A cold front will cause winds and seas to increase off the northern Florida coast on Tuesday. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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 McElroy. National Hurricane Center.