000 AXNT20 KNHC 110530 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 105 AM EDT Mon Mar 11 2019 Tropical Weather Discussion for North America, Central America Gulf of Mexico, Caribbean Sea, northern sections of South America, and Atlantic Ocean to the African coast from the Equator to 32N. The following information is based on satellite imagery, weather observations, radar and meteorological analysis. Based on 0000 UTC surface analysis and satellite imagery through 0515 UTC. ...SPECIAL FEATURES... ...Caribbean Sea Gale Warning... NE gale-force winds will be present in the Caribbean Sea, for the next 18 hours, near the coast of Colombia, from 11N to 13N between 74W and 76W. The sea heights will range from 10 feet to 15 feet. The wind speeds will slow down during the afternoon hours on Monday, and then return to gale-force, from Monday night until Tuesday morning. Please read the latest High Seas Forecast issued by the National Hurricane Center under the AWIPS/WMO header MIAHSFAT2/FZNT02 KNHC or the website https://www.nhc.noaa.gov/text/MIAHSFAT2.shtml for more details. ...MONSOON TROUGH/ITCZ... The monsoon trough passes through the coastal areas of Sierra Leone near 08N12W to 05N15W. The ITCZ continues from 05N15W, to the Equator along 27W, to 02S36W and 03S42W at the coast of Brazil. Isolated moderate to locally strong rainshowers are from 05N southward between 16W and 25W. Isolated moderate rainshowers are from 10W eastward. GULF OF MEXICO... Broad upper level anticyclonic wind flow spans the entire Gulf of Mexico. An east-to-west oriented surface ridge passes through 29N75W in the Atlantic Ocean, across N central Florida, into the Gulf of Mexico near 28N88W, to 25N93W, and toward the SW corner of the Gulf of Mexico. A stationary front extends from east Texas, toward the Texas Big Bend. High pressure, that is centered N of the Gulf of Mexico, will shift E into the western Atlantic Ocean by Friday. Low pressure in interior Mexico will deepen on Tuesday and Wednesday. This situation will set up strong SE to S return flow across most of the Gulf of Mexico from Tuesday night through Wednesday night. A strong cold front will enter the NW Gulf of Mexico on Thursday night. The front will reach from the Florida Big Bend to the Bay of Campeche by Friday evening. It is possible that gale-force winds may affect the coastal waters of Mexico, near Tampico and Veracruz, on Friday. CARIBBEAN SEA... High pressure to the north of the area will support fresh to strong trade winds in much of the central Caribbean Sea through Friday night. Gale-force winds are expected each night near the coast of Colombia. Moderate to fresh trade winds will continue across the remainder of the area. ATLANTIC OCEAN... Upper level cyclonic wind flow covers the area that is from 20N to 30N between 60W and 70W. Isolated moderate rainshowers are in that same area. A surface ridge extends from 1028 mb high pressure center that is near Bermuda, to 29N75W, across N central Florida, into the Gulf of Mexico beyond 28N88W. An upper level trough passes through 32N51W to 21N51W to 14N55W. The trough is supporting a cold front that passes through 32N49W, to 28N50W and 24N53W. Isolated to widely scattered moderate and locally strong rainshowers cover the area that is from 23N northward between 42W and 53W. Broad surface anticyclonic wind flow covers the area that is from 20N northward from 40W eastward. High pressure will prevail across the area through Monday. A cold front, entering the NW waters on Monday, will move across the waters N of 27N through Tuesday night. High pressure will develop again in the northern waters from Wednesday through Thursday night, and then shift eastward on Friday. For additional information please visit http://www.hurricanes.gov/marine $$ mt