000 AXNT20 KNHC 272345 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 645 PM EST Mon Nov 27 2017 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 1800 UTC surface analysis and satellite imagery through 2345 UTC. ...ITCZ/MONSOON TROUGH... The monsoon trough extends from the African coast near 08N14W to 07N18W. The Intertropical Convergence Zone extends from 07N18W to 07N47W. Scattered moderate convection is noted north of 04N to 20N and east of 33W. ...DISCUSSION... GULF OF MEXICO... A broad mid to upper-level trough is over much of the basin. A 1014 mb surface low is entered near 22N88W with a surface trough extending northwest from the low to 26N91W. Another portion of the trough extends southeast across the Yucatan Channel into the west Caribbean. Isolated showers are occurring from 23N- 26N between 80W-89W. Elsewhere, isolated showers are occurring south of 24N and west of 95W in association with a surface trough paralleling the coast of Mexico. Gentle to moderate northeasterly winds are across the basin, with strongest area prevailing in the vicinity of the low/trough. The low is expected to weaken through Wednesday, with the remnant trough drifting westward and eventually merging with the next cold front forecast to move off the Texas and Louisiana coasts on Wednesday late morning into the afternoon. CARIBBEAN SEA... Southwesterly flow aloft prevails over much of the western and central Caribbean between a mid to upper-level trough over the Gulf of Mexico and Florida peninsula and an upper-level anticyclonic circulation anchored over the eastern Caribbean. Moisture and cloudiness continues to advect northeastward from 83W across Jamaica, the Cayman Islands, and Cuba. Scattered showers are occurring along and east of a surface trough extending from the Yucatan Channel to 18N82W to a 1008 mb surface low near 10N78W. Moderate to fresh trades will persist east of 80W through Wednesday while moderate to fresh northwesterly winds are expected generally west of 80W. ...HISPANIOLA... Generally clear skies and fair weather conditions are across the island as the influence of mid to upper-level ridging remains in place over the region. Drier conditions are expected to prevail through tonight. ATLANTIC OCEAN... A mid to upper-level trough is noted on water vapor imagery over the western Atlantic and extends a stationary front into the discussion area near 32N59W. The front continues southwest to 27N67W and becomes a weak stationary front across the central Bahamas to the coast of Cuba near 22N77W. Scattered showers and are occurring north of 27N and west of 55W. The front is expected to continue weakening through Tuesday as a surface ridge slides off the Mid-Atlantic and southeast CONUS coastline. Across the central Atlantic, a surface trough extends from 30N38W to 26N49W. A 1009 mb low is centered east of the Azores near 38N23W with the dissipating cold front extending into the discussion area near 31N21W. A surface trough extends from the front to 28N30W with no significant convection. For additional information please visit http://www.hurricanes.gov/marine $$ ERA