000 AXNT20 KNHC 110552 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 0605 UTC Fri Aug 11 2023 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 31N. The following information is based on satellite imagery, weather observations, radar and meteorological analysis. Based on 0000 UTC surface analysis and satellite imagery through 0530 UTC. ...SPECIAL FEATURES... Gale-Force Wind Warning E of 35W: A gale-force wind warning for the marine zone CANARIAS was issued by the METEO-FRANCE, to end at 11/0600 UTC. A 1029 mb high pressure center is near 37N18W. The gale-force winds developed in the CANARIAS marine zone, in response to the surface pressure gradient that has been between the 1029 mb high pressure center, and comparatively lower surface pressures that have been in NW Africa. Strong to near gale-force NE winds are elsewhere from 22N northward from 25W eastward. The sea heights have been ranging from 7 feet to 10 feet from 20N northward from 20W eastward. The sea heights are ranging from 6 feet to 8 feet from 17N to 26N between 20W and 30W. Please, refer to the METEO-FRANCE High Seas Forecast, at the website https://wwmiws.wmo.int, for more details. ...TROPICAL WAVES... An Atlantic Ocean tropical wave is along 26W/27W, from 17N southward, moving westward about 10 knots. Precipitation: scattered to numerous moderate to strong is from 06N to the monsoon trough, between the 26W/27W tropical wave and 32W. An Atlantic Ocean tropical wave is along 41W, from 17N southward, moving westward about 10 knots. Precipitation: isolated moderate to locally strong is from 04N to the monsoon trough between 40W and 43W. A Caribbean Sea tropical wave is along 70W, from 20N southward, moving westward from 15 knots to 20 knots. Precipitation: widely scattered moderate to isolated strong is from 16N in the Caribbean Sea to 28N in the Atlantic Ocean between 65W and 77W. A Caribbean Sea tropical wave is along 80W from 21N southward, moving westward 10 knots. Precipitation: isolated moderate to locally strong is from 16N to parts of Cuba between Jamaica and the NW Yucatan Peninsula. ...MONSOON TROUGH/ITCZ... The monsoon trough passes through the coastal areas of Senegal near 14N17W, to 09N24W, to 08N47W. Precipitation: isolated moderate to locally strong is elsewhere from 12N southward from 60W eastward. The rest of the nearby precipitation also is related to the tropical waves. GULF OF MEXICO... A surface ridge passes through the NW Bahamas, beyond Lake Okeechobee in south Florida, toward the lower Texas Gulf coast. The sea heights are reaching 4 feet from the coastal waters of the lower Texas Gulf coast to the coastal waters of NE Mexico. The sea heights are reaching 3 feet in the coastal waters of Louisiana, to the west central Gulf, and in the coastal waters of Mexico along 20N in the SW corner of the Gulf of Mexico. The sea heights are reaching 2 feet in the coastal waters that are between the Florida Big Bend and Louisiana, in the Straits of Florida, and off the NW coast of the Yucatan Peninsula. The sea heights are reaching 1 foot elsewhere. Moderate or slower anticyclonic wind flow spans the Gulf of Mexico. Surface ridging across the Gulf will support gentle to moderate winds over most of the basin during the next several days. Moderate to fresh winds will pulse over the western Gulf with slight to moderate seas. A thermal trough will move off the Yucatan Peninsula each night and produce fresh to strong winds off NW Yucatan. CARIBBEAN SEA... Fresh to strong SE winds are from 12N to 16N between 66W and 71W. Moderate to fresh easterly wind flow is in the rest of the central one-third of the area. Moderate easterly wind flow is in the eastern one-third of the area. Moderate or slower NE winds are in the western one-third of the area. The sea heights are reaching 5 feet to the south of Puerto Rico. The sea heights are reaching 4 feet in the eastern half of the Venezuela coastal waters; from the Hispaniola coastal waters and offshore waters to the coastal waters and the offshore waters of Colombia and the eastern half of Panama. The sea heights are reaching 3 feet in the western half of the Venezuela coastal waters. The sea heights are reaching mostly 2 feet elsewhere, except for 1 foot for the eastern coastal waters of Honduras. The monsoon trough is along 09N/10N between northern Colombia along 75W, beyond southern Costa Rica, and into the Pacific Ocean. Precipitation: scattered to numerous moderate to strong is within 150 nm to the south of the monsoon trough between 75W and 80W. Moderate to fresh winds will prevail in the central and eastern Caribbean through Fri, locally strong in the south central portion. Light to gentle winds can be expected for the western basin. On Fri night through Tue night, fresh to strong winds and moderate seas will expand across the central Caribbean, while moderate to fresh winds and moderate seas prevail elsewhere. ATLANTIC OCEAN... A stationary front passes through 31N38W, to a 1016 mb low pressure center that is near 30N41W. The stationary front continues from the 1016 mb low pressure center, to 26N45W, to 25N50W and 26N56W. Precipitation: widely scattered moderate to isolated strong is from 23N to 27N between 48W and 54W. A surface ridge extends from a 1020 mb high pressure center that is near 28N61W, to the NW Bahamas, beyond Lake Okeechobee in south Florida. A surface ridge passes through 31N26W, to 24N40W and 20N56W. Moderate to fresh cyclonic wind flow is from 15N to 22N from the Cabo Verde Islands eastward. Mostly moderate to locally fresh NE winds are from 700 nm to 1000 nm to the south of the line that runs from 28N30W to 23N45W 22N56W 25N70W. Fresh southerly winds are from the monsoon trough southward from 35W eastward. Moderate or slower winds are elsewhere in the Atlantic Ocean. The sea heights are ranging from 8 feet to 12 feet to the south and east of the line that runs from the border of Senegal and Mauritania, to southern parts of the Cabo Verde Islands, to 12N30W, to the Equator along 34W. The comparatively highest concentration of the sea heights that are ranging from 9 feet to 12 feet is from 10W eastward. The sea heights generally are ranging from 3 feet to 6 feet elsewhere from 60W eastward. The sea heights are 4 feet or lower from 60W westward. The subtropical ridge axis will be situated near 28N through the weekend and into early next week. Moderate to fresh winds will prevail S of 25N, with gentle to moderate winds N of 25N. Winds will pulse fresh to locally strong north of Hispaniola during the evenings Sat through Tue. $$ mt/al