000 AXNT20 KNHC 111157 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 705 AM EST Sat Jan 11 2020 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 1140 UTC. ...SPECIAL FEATURES... ...CARIBBEAN SEA GALE WARNING... Gale-force NE to E winds, and sea heights ranging from 12 feet to 19 feet, are being experienced off the coasts of Colombia and Venezuela, from 10N to 16 N between 69W and 80W. Expect gale- force NE to E winds in more or less the same areas until at least Sunday night. Please read the latest HIGH SEAS FORECAST: MIAHSFAT2/FZNT02 KNHC, the latest OFFSHORE FORECAST: MIAOFFNT3/FZNT23 KNHC, or go to the website https://www.nhc.noaa.gov/text/MIAHSFAT2.shtml, from the NWS National Hurricane Center, for more details. ...GULF OF MEXICO GALE WARNING... A cold front is along the line from 29N96W TO 27N98W. The 12- hour forecast position of the cold front is from 29N90W to 21N96W to 19N95W. Expect NW gale-force winds, and sea heights to 8 feet, S of 20N W of the cold front. The gale-force wind conditions are forecast to continue until at least Saturday night. Please read the HIGH SEAS FORECAST, MIAHSFAT2/FZNT02 KNHC, the latest OFFSHORE FORECAST, MIAOFFNT4/FZNT24 KNHC, or go to the website https://www.nhc.noaa.gov/text/MIAHSFAT2.shtml, from the NWS National Hurricane Center, for more details. ...SOUTHWEST ATLANTIC OCEAN SWELL AND HIGH SEAS... The surface pressure gradient, with the strong high pressure in the Atlantic Ocean, will lead to a continuation of strong to near gale-force easterly winds, and large sea heights, covering from the Caribbean Sea northward, between 36W and the Bahamas. Windward facing islands from the central Bahamas to the Leeward Islands will experience large and battering waves through early next week. The sea heights will be reaching 17 feet, particularly to the north of Puerto Rico and to the north of the Leeward Islands, in E to SE swell. ...MONSOON TROUGH/ITCZ... The monsoon trough passes through the coastal border sections of Sierra Leone and Liberia, to 07N13W, to 03N18W. The ITCZ continues from 03N18W to 01N22W and 01N28W, to the Equator along 38W. Precipitation: widely scattered moderate to isolated strong from 03N southward between 06W and 10W. Isolated moderate is elsewhere from the monsoon trough and the ITCZ southward. Isolated moderate is within 210 nm to the north of the ITCZ between 18W and 30W. GULF OF MEXICO... A vigorous deep layer trough is moving through the central U.S.A. The trough is supporting a cold front that is partially inland in Texas, and partially in the waters just off the coast of Texas. The front is along 30N95W, to 28N96.5W in the water, curving beyond 26N98.5W, into Mexico. Precipitation: numerous strong is within 60 nm on either side of the line that extends from 26N95W to 29N92W beyond 30N92W in south central coastal Louisiana. Gale-force NW winds are expected to the west of the front near the coast of Veracruz Mexico later today. The current strong cold front will be moving off the Texas coast during the day today. The front will extend from the Florida Big Bend to the Bay of Campeche tonight. The front will stall and weaken on Sunday. The front will drift northward as a frontal trough through Monday. Gale-force NW winds are expected to the west of the front, near the coast of Veracruz Mexico, later today. CARIBBEAN SEA... The GFS model for 250 mb and water vapor satellite imagery show a trough that passes through the Yucatan Channel, through Honduras and Nicaragua, to 06N83W in the eastern Pacific Ocean. Precipitation: no significant deep convective precipitation is apparent in satellite imagery. Comparatively drier air in subsidence is apparent in water vapor imagery, from 80W eastward. Strong high pressure, to the N of the area, will allow strong to near gale-force winds to continue across the entire area through Tuesday. Gale-force winds are expected to continue in the south- central Caribbean Sea through Tuesday night, and then pulse to gale-force again on Wednesday night. Large sea heights will continue across the region through Wednesday night. ATLANTIC OCEAN... A cold front passes through 32N34W to 25N50W to 23N64W. The front becomes dissipating stationary from 23N64W to 24N73W. Precipitation: isolated moderate within 75 nm on either side of the line from 22N51W to 26N43W to 31N39W. A 1042 mb high pressure center is near 36N58W. Surface anticyclonic wind flow covers the Atlantic Ocean to the north and northwest of the cold front. Upper level cyclonic wind flow covers the Atlantic Ocean from 28N southward between the Cabo Verde Islands and 60W. This wind flow is related to an upper level cyclonic circulation center that is near 22N36W, and a trough that extends southwestward from the 22N36W cyclonic center. Broken to overcast multilayered moisture is spiraling away from the upper level cyclonic center, and it is within 400 nm to the north of the center, within 600 nm to the east of the center, and within 700 nm to the southeast of the center. Rainshowers are possible in the areas of the multilayered moisture. Strong high pressure will prevail in the western and central Atlantic Ocean through Tuesday. Strong trade winds are expected across the entire region through Sunday night. Strong winds will remain across southern waters through Tuesday night. Large sea heights will continue in the region through Wednesday. $$ mt