Tropical Weather Discussion
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787 AXNT20 KNHC 241016 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 1205 UTC Mon Jun 24 2024 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 0600 UTC surface analysis and satellite imagery through 0930 UTC. ...TROPICAL WAVES... An eastern Atlantic tropical wave is along 25W, south of 15N, moving westward at 10-15 kt. Scattered showers are noted along the wave`s axis. A central Atlantic tropical wave has is along 45W, south of 13N, moving westward at 15 kt. Scattered showers are noted along the wave`s axis. Another central Atlantic tropical wave is along 58W, south of 20N, moving westward at 15 kt. Scattered moderate convection is noted along the wave`s axis, from 10N-14N. A central Caribbean tropical wave is along 70W, south of 16N, moving westward at 10-15 kt. No significant convection is noted at this time. A western Caribbean/EPAC tropical wave is along 87W, south of 18N, moving westward at 10-15 kt. Scattered showers and isolated thunderstorms are within 120 nm W of the wave axis south of 14N, affecting the Gulf of Honduras. ...MONSOON TROUGH/ITCZ... The monsoon trough enters the Atlantic through the coast of Senegal near 12N17W and continues southwestward to 08N26W. The ITCZ extends from 08N26W to 08N58W. Scattered moderate to isolated strong convection is present from 02N to 12N and east of 24W and from 06N to 12N and between 47W and 57W. Lighter activity prevails along the ITCZ between 26W-42W. ...GULF OF MEXICO... The basin is under generally dry conditions. Moderate to fresh easterly winds and seas of 4-6 ft are occurring in the western Gulf. In the remainder of the basin, moderate or weaker winds and slight to moderate seas prevail. For the forecast, moderate to fresh SE winds and moderate seas prevail across the area W of 90W, while gentle winds and slight seas prevail E of 90W. Similar conditions are expected through the week, as a weak high pressure builds over the E central Gulf Tue through Thu. ...CARIBBEAN SEA... Refer to the section above for details on the tropical waves moving across the basin. Divergence aloft and plenty of tropical moisture continue to enhance the showers and isolated thunderstorms across the Greater Antilles and surrounding waters. Similar convection is noted off NW Colombia, off eastern Yucatan and NE Caribbean, also affecting the Leeward Islands. An expansive subtropical ridge centered between Bermuda and the Azores extends southwestward into the Caribbean Sea. The ridge is forcing fresh to strong easterly winds in the south-central Caribbean. Seas in these waters are 4-7 ft. Moderate or weaker winds and slight to moderate seas are prevalent elsewhere. For the forecast, surface ridging prevails across the Atlantic basin. With this, moderate to fresh trade winds will continue across the eastern and central Caribbean through tonight, pulsing to strong speeds at night near the coast over the south-central basin. Moderate trade winds and moderate seas are will prevail across the western basin through the week, except for winds pulsing to strong speeds at night in the Gulf of Honduras through this morning. Fresh to strong trades will accompany a tropical wave moving across the eastern basin Tue through early Wed and across the central basin Wed through Thu. ...ATLANTIC OCEAN... Refer to the section above for details on the tropical waves moving across the basin. Divergence aloft and abundant tropical moisture result in scattered showers and isolated thunderstorms impacting the Bahamas and surrounding waters. In the remainder of the tropical Atlantic, Saharan dust and subsidence allow for drier conditions. An expansive subtropical ridge is centered between Bermuda and the Azores. Fresh to strong southerly winds and seas of 4-6 ft are occurring north of 30N and west of 75W. The pressure gradient between the aforementioned ridge and lower pressures in the deep tropics sustain fresh to strong NE-E winds south of 25N and between 30W and 60W. Seas in these waters are 8-10 ft, with the highest seas occurring near 11N47W. Moderate to fresh NE winds and seas of 5-8 ft are present east of 30W. Elsewhere in the basin, moderate or weaker winds and moderate seas are prevalent. For the forecast west of 55W, fresh southerly winds and moderate seas will prevail across the waters N of 30N and W of 75W through today. Gentle to moderate E to SE winds will prevail elsewhere across the region through Wed, becoming SE to S winds W of 65W. High pressure north of the region will build SW into the NW Bahamas tonight through Tue, then shift NE and weaken through Thu. Fresh to strong winds across the waters E of the Lesser Antilles will prevail through Tue associated with the passage of a tropical wave. $$ ERA