524 AXNT20 KNHC 310005 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 805 PM EDT Thu Aug 30 2018 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. ...SPECIAL FEATURE... The center of Potential Tropical Cyclone Six, at 31/0000 UTC, is a 1007 mb low pressure center, that is near 13.1N 20.4W, or 480 km to the ESE of the southernmost Cabo Verde Islands. The low center is moving W 10 knots. The maximum sustained wind speeds are 25 knots with gusts to 35 knots. The government of the Cabo Verde Islands has issued a Tropical Storm Warning for the southern islands of Santiago, Fogo and Brava. Scattered moderate to isolated strong convection is from 08N-15N between 14W-27W. Please read the latest NHC forecast/advisory under AWIPS/WMO headers MIATCPAT1/WTNT31 KNHC for more details. ...TROPICAL WAVES... An Atlantic Ocean tropical wave is along 39W/40W from 14N southward, moving west at 15 kt. Isolated moderate rainshowers are within 180 nm on either side of the tropical wave. A Caribbean Sea tropical wave is along 72W/73W, from Haiti southward to the border of Colombia and Venezuela. An upper level trough is to the west and northwest of the tropical wave. Isolated moderate to locally strong rainshowers cover parts of Hispaniola. Scattered moderate to strong rainshowers are in Colombia and Venezuela from 10N inland to the coast between 70W and 74W. A tropical wave is along 95W/96W from 19N southward. Isolated moderate to locally strong rainshowers are in the Isthmus of Tehuantepec of southern Mexico. ...MONSOON TROUGH/ITCZ... The monsoon trough passes through the coast of Africa near 12N16W to 11N30W to 08N45W. The ITCZ continues from 08N45W to the coast of South America near 06N54W. Besides the convection mentioned with Potential Tropical Cyclone Six, and the tropical wave, isolated moderate convection is from 06N-09N between 44W- 55W. ...DISCUSSION... GULF OF MEXICO... An upper level low is centered over NE Mexico near 25N100W. Another small upper level low is centered over the NE Gulf of Mexico near 30N86W. Patches of scattered moderate convection is over the N Gulf N of 23N. At the surface, a ridge extends along 30N producing 10-15 kt SE surface flow. A tropical wave is over the Bay of Campeche. See above. CARIBBEAN SEA... A tropical wave is over the E Caribbean. Refer to the section above for details. An upper level low is centered S of Hispaniola near 17N73W. Upper level cyclonic flow covers the entire Caribbean. An area of diffluent flow is over the NW Caribbean S of Cuba. The eastern part of the eastern Pacific monsoon trough is along 10N from 74W in Colombia beyond southern Costa Rica. Scattered moderate to isolated strong convection is from 07N-11N between 72W-83W. Fresh to strong winds will prevail in the south central Caribbean, before diminishing through Saturday. Gentle to moderate winds will prevail elsewhere. ATLANTIC OCEAN... A low amplitude tropical wave is moving across the basin. Refer to the section above for details. A 1022 mb high is centered W of Bermuda near 32N71W. A 1026 mb high is centered near the Azores at 36N24W. Moderate to fresh winds will be S of 24N, and gentle to moderate winds will be N of 24N. Winds will pulse to fresh to strong just north of Hispaniola, including the approach to the Windward Passage, during the evening and overnight hours through the weekend. A tropical wave over the east Caribbean and adjacent Atlantic waters will produce active weather as it moves westward across the Lesser Antilles and Bahamas through Monday. For additional information please visit http://www.hurricanes.gov/marine $$ MT