Tropical Weather Discussion
Issued by NWS
Issued by NWS
869 AXNT20 KNHC 041652 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 1815 UTC Thu Jun 4 2026 Tropical Weather Discussion for North America, Central America Gulf of America, 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 1200 UTC surface analysis and satellite imagery through 1700 UTC. ...SPECIAL FEATURES... Gale Warning East of 35W: The pressure gradient between the 1031 mb high pressure system centered southwest of the Azores and lower pressures in northwest Africa result in strong to near gale- force northerly winds in the Agadir High Seas Marine Zones. Scatterometer data from 1014 UTC today showed strong to near gale force winds occurring off the coast of Morocco. Gale-force winds are expected to occur through 05/0000 UTC with severe gusts. These winds will produce rough seas. Similar conditions will persist into the weekend. For more details, refer to the Meteo- France High Seas Forecast listed on their website https://wwmiws.wmo.int. ...TROPICAL WAVES... An eastern Atlantic tropical wave is analyzed near 17W south of 14N, moving west at 5-10 kt. Scattered moderate convection is active from 06N to 10N between 13W and 19W. An eastern Atlantic tropical wave is along 39W, south of 12N, moving westward at 15-20 kt. Scattered moderate convection is seen from 04N to 09N between 36W and 42W. A central Atlantic tropical wave is along 51W, south of 14N, moving westward at 10-15 kt. Scattered moderate convection is noted from 08N to 12N between 47W and 55W. An eastern Caribbean tropical wave is along 64W, south of 15N, moving westward at 15 kt. No deep convection is noted over the Caribbean waters. The wave is enhancing shower and thunderstorm activity across NE South America. ...MONSOON TROUGH/ITCZ... The monsoon trough enters the Atlantic through the coast of Mauritania near 18N16W and continues southwestward to 06N26W. The ITCZ extends from 06N26W to 03N37W where it is broken by a tropical wave. The ITCZ then resumes from 02N40W to 01N50W. Scattered showers and isolated thunderstorms are along and within 150 nm of the ITCZ. ...GULF OF AMERICA... A weakening stationary front and frontal remnant trough extend from the Florida Straits to SE Louisiana. A tight pressure gradient behind the front forces fresh to strong easterly winds and moderate to rough seas. Moderate to fresh easterly winds and slight to moderate seas are present across the southeast Gulf and the Straits of Florida. Elsewhere, moderate or weaker winds and slight seas prevail. Divergence aloft and plenty of tropical moisture result in numerous moderate and isolated strong convection over the Gulf waters east of 90W. For the forecast, fresh to strong E to SE winds and moderate to rough seas persist north of a weakening stationary front over the SE waters. Pressure is falling over the central Gulf along a trough, and low pressure weak may form later today near 26N90W even as the front dissipates. This will enhance the strong winds and rough seas over the north-central Gulf this afternoon and evening. Meanwhile, scattered thunderstorms will continue today over the south-central and southeast Gulf. Winds and seas will diminish starting Fri as the low dissipates to a remnant trough as it moves onshore over southwest Louisiana, and as a ridge builds from the western Atlantic into the eastern Gulf. This pattern will support gentle to moderate E to SE winds and slight to moderate seas into early next week, except for occasionally fresh to strong pulses off northwest Yucatan during the evenings. ...CARIBBEAN SEA... A ridge extends from 1031 mb high pressure system centered SW of the Azores southwestward to the Caribbean Sea, supporting fresh to strong easterly trade winds and rough seas in the south- central Caribbean. Moderate to fresh easterly winds and moderate seas are noted in the north-central and eastern Caribbean as well as the Gulf of Honduras. Elsewhere, moderate or lighter winds and slight to moderate seas prevail. Scattered moderate convection is occurring in the SW Caribbean, along the eastern extension of the East Pacific monsoon trough. For the forecast, moderate to fresh E to SE trade winds and moderate seas will persist across the Caribbean into Sat as the Atlantic ridge north of the area weakens and shifts eastward. The exceptions will be fresh to strong pulses off Venezuela tonight, and in the Gulf of Honduras tonight and Fri night. Fresh to strong SE winds and building are possible over the northwest and north- central Caribbean late Sat through early next week as the Atlantic ridge rebuilds north of area. ...ATLANTIC OCEAN... Please read the Special Features section about a Gale Warning in the far northeast Atlantic. A cold front extends from 31N67W to the central Bahamas and the Florida Straits. Scattered showers and a few thunderstorms are present along and just ahead of the front, while scattered moderate convection is occurring over the central and southern Bahamas. Moderate to fresh N-NE winds and rough seas in NE swell are found behind the front. Fresh to strong southerly winds and moderate seas are evident N of 27N and W of 65W to the front. In the remainder of the tropical Atlantic, the basin is being dominated by ridging centered around a 1031 mb high located SW of the Azores, leading to moderate to fresh easterly trade winds and moderate to locally rough seas. For the forecast west of 55W, a cold front reaches from 31N68W to the central Bahamas, then is stationary to the Florida Straits. Rough seas will linger over the northern waters behind the front today. The front will stall today then dissipate Fri into Sat, as high pressure builds across the area. This pattern will allow gentle to moderate winds and 3-5 ft seas into early next week. $$ Adams