064 AXNT20 KNHC 191047 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 1215 UTC Sat Jul 19 2025 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 0600 UTC surface analysis and satellite imagery through 1030 UTC. ...TROPICAL WAVES... An eastern Atlantic tropical wave has its axis near 33W from 05N to 17N, moving westward at 10 to 15 kt. Numerous moderate to isolated strong convection is within 60 nm east of the wave from 06N to 10N. Scattered moderate convection is within 180 nm west of the wave from 05N to 09N. A western Caribbean tropical wave has its axis near 85W south of 20N to inland eastern Honduras, eastern Nicaragua and northern Costa Rica. and recking to the eastern Pacific near 07N. It is moving westward around 15 kt. Scattered moderate to strong convection lags the wave over southern Nicaragua and over Costa Rica and adjacent waters. ...MONSOON TROUGH/ITCZ... The monsoon trough enters the Atlantic near the coastal border of West Sahara and Mauritania, then curves southwestward passing to just south of the Cabo Verde Islands to 08N36W. The ITCZ extends from 08N36W to 07N45W and to near the coastal border of Guyana and 06N57W. Aside from convection associated to the tropical wave along 33W, numerous moderate to strong convection is seen within 60 nm south of the ITCZ between 34W-42W. Scattered moderate to isolated strong convection is within 60 nm south of the ITCZ between 45W-49W. Scattered moderate convection is within 30 nm north of the ITCZ between 50W-57W. ...GULF OF AMERICA... Modest high pressure extend westward from the western Atlantic across Florida and west-southwestard toward the Texas/Mexico border. This feature controls the general wind flow across the Gulf, providing for gentle to moderate east to southeast winds over the northern Gulf, where seas are 3 ft or less. Moderate to fresh northeast to east winds are over the southern Gulf, including the Bay of Campeche and Straits of Florida. Seas over this section of the Gulf are 3 to 5 ft. satellite imagery shows isolated showers and thunderstorms over some sections of the central and eastern Gulf sections. For the forecast, the modest surface ridge will prevail across the Gulf through the middle of next week, producing gentle to moderate winds with slight to moderate seas. Fresh to strong northeast to east winds will pulse along the Yucatan Peninsula each afternoon and evening through early next week as a trough develops inland daily and shifts westward over the Bay of Campeche at night. ...CARIBBEAN SEA... The pressure gradient between western Atlantic high pressure and low pressure in Colombia low is currently sustaining fresh to near gale northeast to east trades and seas of 9 to 14 ft over the south-central section of the Caribbean. Fresh to locally strong northeast winds with seas at 7 to 9 ft are over noted over the southwestern part of the basin while moderate to fresh with locally strong northeast to east winds are over the north- central sections of the basin. Seas are 5 to 7 ft with these winds, except for higher seas of 6 to 9 ft in east swell from 15N to 18N between 72W and 80W. Fresh to strong northeast winds are in the Windward Passage. Seas there are 6 to 8 ft. Moderate to fresh east winds are in the Gulf of Honduras along with seas of 4 to 6 ft. satellite imagery shows scattered moderate to strong convection over southern Nicaragua and over Costa Rica and adjacent waters. For the forecast, fresh to strong winds over the south-central basin will persist through early next week. Near gale-force winds with brief gusts to gale force along with rough seas are expected offshore of northern Colombia this morning. Fresh to locally strong northeast winds and moderate to rough seas will continue in the Windward Passage through tonight. At the same time, expect fresh east winds in the Gulf of Honduras. Winds will diminish slightly Sun into next week as the western Atlantic high pressure weakens. ...ATLANTIC OCEAN... The gradient related to high pressure of 1028 mb near 28N75W is supporting light to gentle winds with 2 to 3 ft seas north of 26N between 60W and the Florida/southern Georgia coast. Fresh to locally strong east to southeast winds and seas of 4 to 6 ft are over the waters of the southeastern Bahamas. Otherwise, mostly moderate northeast to east winds and seas at 4 to 6 ft are over the waters from 09N to 31N between 35W and the Bahamas/Lesser Antilles. Elsewhere, gentle to moderate east to southeast winds along with seas of 4 to 7 ft remain. satellite imagery shows isolated showers and thunderstorms confined to over the waters from 21N to 31N between 58w and 69W. A large mid to upper-level low is over this part of the area. At the surface, a trough is analyzed from 31N54W to 27N60W and to 31N63W. For the forecast west of 55W, the subtropical ridge will dominate the weather pattern across the western Atlantic through early next week. A gentle to moderate anticyclonic flow will prevail along with moderate seas. The fresh to locally strong winds and moderate seas are expected north of Hispaniola to about 22N, including approaches to the Windward Passage, will diminish late tonight. Winds will diminish slightly Sun into next week as high pressure weakens over the western Atlantic. $$ Aguirre
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Page last modified: Saturday, 19-Jul-2025 12:00:16 UTC