000 AXNT20 KNHC 072329 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 729 PM EDT Fri Apr 7 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 2315 UTC. ...ITCZ/MONSOON TROUGH... The Monsoon Trough extends from the African coast near 07N12W to 02N19W. The Intertropical Convergence Zone extends from 01S16W to 01N35W to 00N47W. Isolated showers are observed within 100 nm on either side of the ITCZ between 20W-36W. ...DISCUSSION... GULF OF MEXICO... West-northwesterly mid to upper-level flow prevails over the Gulf basin. Surface ridging remains in control across the basin anchored by a 1025 mb high centered across northern Louisiana. Moderate to fresh anticyclonic winds are depicted in scatterometer data across the Gulf waters. These conditions will persist through the overnight into Saturday. By Saturday night, moderate to fresh southeast winds are forecast to re-establish across the western Gulf waters ahead of the next frontal boundary expected to stall across the coastal plains next week. CARIBBEAN SEA... Broad mid to upper-level troughing is noted on water vapor imagery over the western Caribbean in support of a weakening frontal boundary that extends from central Cuba as a cold front from 22N79W to 20N81W, then as stationary front from that point to 20N85W. A pre-frontal trough extends from 20N77W to 17N82W. Scattered showers are observed along and near the trough mainly north of 18N affecting portions of eastern Cuba and west Jamaica. The remainder of the Caribbean remains under relatively tranquil conditions, with the largest impact being strong to near-gale trades within close proximity to the coast of Colombia. These conditions will pulse through late Saturday night into early Sunday. Moderate to occasional fresh trade prevail elsewhere and will persist through the weekend. ...HISPANIOLA... Strong subsidence remains in place aloft providing overall stable conditions and fair weather across the island. A cold front and associated pre-frontal surface trough are approaching the island from the west. These features will support showers across the island through the next 24-48 hours. ATLANTIC OCEAN... A mid to upper-level low is centered over the New England states with the associated troughing dipping southward over the mid- Atlantic coast and southeast CONUS. The troughing supports a cold front analyzed into the discussion area near 31N70W to 22N78W. Scattered showers are occurring along and east of the front mainly N of 26N between 65W-71W. To the east, a 1022 mb surface high is centered near 28N56W. A 1015 mb surface low is located near 24N40W. A stationary front extends northeast from the low to 24N35W to 31N26W. A surface trough extends southwest from the low to 16N48W. Scattered showers prevail within 100 nm near the low. Another surface low is centered near 32N43W and extends its cold front from the low to 29N45W to 30N51W. A pre-frontal trough is from 29N42W to 27N45W to 26N49W. Expect for the cold front over the west Atlantic to keep moving east with convection. The features over the central and east Atlantic will dissipate. For additional information please visit http://www.hurricanes.gov/marine $$ ERA