000 AXNT20 KNHC 141057 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 557 AM EST Thu Nov 14 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 0600 UTC surface analysis and satellite imagery through 1030 UTC. ...SPECIAL FEATURES... Gulf of Mexico Gale Warning... A cold front will enter the Gulf today, then move SE across the basin through Friday. In the wake of this front, gale-force winds are forecast over the SW Gulf by early Friday from 21N-24N and west of 96W, with seas ranging between 9-11 ft. These conditions will continue through late Friday. See the latest NWS High Seas Forecast issued by the National Hurricane Center under AWIPS/WMO headers HSFAT2/FZNT02 KNHC or at website https://www.nhc.noaa.gov/text/MIAHSFAT2.shtml for further details. ...TROPICAL WAVES... An Atlantic tropical wave has been repositioned with axis along 54W from 20N southward, moving W at 10-15 kt. Scattered showers are noted from 17N-20N between 50W-54W. A west Caribbean tropical/Central America tropical wave extends its axis along 86W from 17N southward, moving W at 10-15 kt. Scattered showers are noted near the wave axis, mainly enhanced by the presence of the monsoon trough. ...MONSOON TROUGH/ITCZ... The monsoon trough extends from the coast of Africa near 08N13W to 07N17W. The ITCZ continues from that point to 02N49W. Scattered moderate convection is noted within 210 nm on either side of the monsoon trough between 18W-36W. GULF OF MEXICO... Refer to the section above for details on the Gale Warning in effect for the southwest Gulf waters. A stationary front extends across the southern portion of the basin from 25N80W to the Yucatan Peninsula near 21N87W. A surface trough extends over the Bay of Campeche from 23N96W to 20N93W. Another trough is analyzed over the northwest Gulf from 28N95W to 26N97W. Scattered showers are noted along these troughs. Scatterometer data depicts moderate to fresh easterly winds across most of the basin. Fresh to strong NE winds are noted over the southwest Gulf. The stationary front will gradually dissipate this morning. A new cold front will move into the Gulf this afternoon and progress southeastward through the basin before exiting late Fri. Weak low pressure is expected to form along this front tonight over the E or NE Gulf then move across the northern Florida Peninsula Fri. In the wake of this front, gale force winds are forecast over portions of the SW Gulf late tonight through Fri night. Another cold front may move into the western Gulf late Sun through Mon. CARIBBEAN SEA... Refer to the section above for details on the tropical wave moving across the basin. Scattered showers and tstorms over the NW Caribbean and eastern Yucatan Peninsula mainly north of 19N between 84W-88W. Relatively dry air covers much of the eastern and central Caribbean. Scattered showers over the far SW Caribbean and over land from N Colombia to Nicaragua are due to the east Pacific monsoon trough and the tropical wave along 86W. Scatterometer data depicts light to moderate trades across the basin. The stationary front will begin to drift NW-N and gradually dissipate today. A cold front will move into the far NW Caribbean late Fri, the gradually stall from eastern Cuba to Nicaragua Sun. The remnants of the front will linger roughly along 80W for the start of next week. Fresh to strong N winds will follow this next cold front as it moves across the NW Caribbean. Otherwise, a weak pres gradient across the basin will lead to generally moderate tradewinds. NE swell will impact the Atlantic as well as Caribbean passages Fri into early next week. ATLANTIC OCEAN... Refer to the section above for details on the tropical wave moving across the basin. A frontal system extends across the west Atlantic, analyzed as a cold front from 32N59W to 27N74W, then becomes stationary from that point to 26N80W. To the east, a surface trough extends from 23N70W to 20N73W. Surface ridge prevails across the remainder of the basin, anchored by a 1035 mb high centered near 43N30W. A surface trough is noted in scatterometer data extending from 17N45W to 10N49W. Scattered moderate convection prevails along and east of the trough between 40W-48W. The frontal system in the west Atlantic will weaken and dissipate later today. Strong ENE winds north of the front, mainly E of 70W, will diminish to fresh this afternoon, and decrease further tonight. Low pressure should move off the NE Florida coast by early Fri then continue stall just N of the area off the SE U.S. coast through the weekend. This low will drag a cold front through areas W of 70W through the weekend. Gale force winds are possible this weekend behind the front, mainly N of 28N, closer to the low pressure. $$ ERA