000 AGXX40 KNHC 120631 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 131 AM EST Sun Mar 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... Showers and thunderstorms will increase today over the northern Gulf as low pressure over the northwest Gulf moves slowly eastward and a strong cold front enters the northern Gulf. Strong winds across the northern semicircle of the low will continue through today and increase to strong to near gale as the cold front merges with the low over the northern Gulf later this morning. The low and front will then stall out through tonight as winds associated with the front and low decrease to about 15 to 20 kt. An upper trough will then dig southward over the United States on Monday and will force the low eastward, dragging the cold front behind it across the central and eastern Gulf through Monday night. Fresh northerly winds will continue behind the front through Tuesday. Winds over the western Gulf will become moderate and easterly Tuesday night through Wednesday while high pressure to the north shifts east. Meanwhile, fresh winds over the eastern Gulf will remain northerly through Thursday. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... Relatively weak high pressure north of the region will support moderate to fresh trade winds over most of the Caribbean through mid week, except for pulses of 20 to 25 kt off Colombia. Seas will peak near 8 ft during these strong pulses. Easterly swell in excess of 8 ft will subside over the tropical north Atlantic waters west of 55W by late Sunday, returning by late Tuesday. A cold front will enter the far northwest Caribbean Tuesday night, with fresh to strong northerly winds expected over much of the northwest Caribbean Wednesday through Thursday as strong high pressure builds north of the region. ...SW N ATLANTIC INCLUDING THE BAHAMAS... A stationary front will linger over the northern waters today as low pressure begins to develop along the tail end of the front near the Florida east coast. Strong winds will develop north of the developing low today with seas building to 8 to 9 ft. Showers and thunderstorms will also be on the increase along and east of the northern Florida coast today. The stationary front will transition to a warm front tonight as the low slowly lifts northeastward and intensifies. Winds north of the low and associated warm front will increase through Monday, reaching near gale to gale by late Monday afternoon over our northeastern waters. The gale will persist north over our waters north of the warm front until Tuesday morning. Seas during this gale will peak around 12 ft. The low will lift north of the region and a cold front will sweep across the Atlantic waters extending from around 31N73W to the central Bahamas Tuesday, then from Bermuda to near the Windward Passage on Wednesday night. Strong southerly flow is expected east of the front north of 27N Tuesday through Thursday with seas of 8 to 11 ft. During this same time period, north of 27N and west of the front, fresh to strong northwest winds and seas of 8 to 13 ft are expected. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... .AMZ113...ATLANTIC FROM 27N TO 31N BETWEEN 70W AND 77W... Gale Warning Mon into Tue. .AMZ115...ATLANTIC FROM 27N TO 31N BETWEEN 65W AND 70W... Gale Warning Mon night into Tue. $$ *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 Latto. National Hurricane Center.