000 AXNT20 KNHC 110520 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 0500 UTC. ...SPECIAL FEATURE... ...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 08N13W to 03N15W and the Equator along 20W. The ITCZ continues from the Equator along 20W, to 02S33W and 03S39W at the coast of Brazil. Isolated moderate to locally strong rainshowers are from 04N southward between 13W and 19W, and from 02N southward between 43W and 50W. Rainshowers are possible elsewhere from 10W eastward, and from 05N southward from 20W westward. GULF OF MEXICO... Broad upper level westerly wind flow spans the entire Gulf of Mexico. An east-to-west oriented surface ridge is in the central Gulf of Mexico. A stationary front extends from east Texas, toward the border area with Mexico from 28N to 29N along 100W. Surface high pressure will cover the area through Monday night. A cold front will enter the NW Gulf of Mexico on Tuesday, and then move northward as a warm front on Wednesday. Another cold front will enter the NW Gulf of Mexico on Thursday night. CARIBBEAN SEA... A surface trough is in the western part of the Dominican Republic, along 71W/72W, from 16N to 20N. Rainshowers are possible from 16N to 20N between the Mona Passage and Jamaica, including across Hispaniola. 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