000 AXNT20 KNHC 121007 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 1215 UTC Sat Jul 12 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 0930 UTC. ...TROPICAL WAVES... A tropical wave is analyzed in the eastern Atlantic Ocean along 23W-24W, south of 17N, moving westward at 10 kt. A 1013 mb low is analyzed along the tropical wave near 12.5N23W. Scattered moderate convection is observed from 06N to 14N and between 23W and 30W. Another tropical wave is analyzed in the eastern Atlantic Ocean along 39W, south of 18N, moving west around 5-10 kt. A 1013 mb low is analyzed along the tropical wave near 10N38.5W. Scattered moderate convection is present from 04N to 11.5N and between 34W and 43W. A tropical wave is analyzed in the central Caribbean and has been repositioned along 72W, south of 17N, moving westward at 15 kt. No significant convection is noted over the water, but the wave is enhancing the showers and thunderstorms over Venezuela. A tropical wave is analyzed in the western Caribbean along 83W, south of 18N, moving westward around 15 kt. Scattered moderate isolated strong convection is noted in the SW Caribbean south of 11.5N and west of 79W. ...MONSOON TROUGH/ITCZ... The monsoon trough enters the Atlantic through the coast of Mauritania near 19N16W and continues southwestward to 10.5N30W to 10N38W to 06N46W. The ITCZ stretches from 06N46W to the coast of French Guiana near 05.5N54W. Scattered moderate isolated strong convection, mostly associated with tropical waves, is noted from 03N to 11.5N between 24W and 46W. ...GULF OF AMERICA... A few clusters of scattered moderate convection have shifted NW and away from the Straits of Florida and into the SE Gulf waters east of 88W. Similar moderate convection is noted across the SE Texas and south Louisiana coastal waters north of 27.5N. A few clusters of strong convection are noted across the western Bay of Campeche. The rest of the basin is under fair skies. Broad and weak high pressure of 1020 mb extends across the NE Gulf and central Florida this morning, and supports moderate to locally fresh E-SE winds and moderate seas to 5 ft south of a line from southern Florida to SW Louisiana. Elsewhere, light to gentle winds and slight seas are prevalent under the ridge. For the forecast, a weak ridge will persist across the basin through Tue. Fresh NE to E winds will pulse to strong along the Yucatan Peninsula each afternoon and evening as a trough develops inland daily and shifts westward over the Bay of Campeche at night. A surface trough is expected to develop across Florida on Mon and drift westward across the eastern Gulf Tue through Wed, accompanied by active weather. ...CARIBBEAN SEA... A 1023 mb Bermuda high extends a broad ridge southwestward into central Florida this morning. The associated pressure gradient to the south is forcing fresh to strong easterly trade winds and moderate to rough seas across much of the central and eastern Caribbean. The strongest winds are found off northern Colombia based on recent satellite scatterometer data. Seas in this area are peaking near 10 ft. Moderate to locally fresh easterly winds and moderate seas are evident west of 80W and south of 20N. Elsewhere, light to gentle winds and slight seas are prevalent. Widely scattered moderate convection is noted north of the tropical wave along 83W, between 83W and 80W. Elsewhere, no significant convection is seen on satellite imagery. For the forecast, the pressure gradient between the Bermuda high and the Colombian low will continue to support pulsing fresh to strong trades and rough seas across the south-central Caribbean through the forecast period. Fresh E winds are expected across the Gulf of Honduras, mainly at night, into early next week, pulsing to locally strong Sun night and Mon night. Moderate to fresh winds and moderate seas are expected in the eastern Caribbean through the weekend while gentle to moderate winds and slight to moderate seas will prevail NW portions. ...ATLANTIC OCEAN... An expansive subtropical ridge continues to dominate the weather pattern across the basin, extending a ridge E to W along about 30N between 30W and 60W, then southwestward into central Florida. Scattered moderate popcorn-type convection is occurring about an elongated upper-level low, from 24N to 31N between 55W and 71W. A line of scattered moderate isolated strong convection is moving southeastward away from the Georgia and Carolina coasts and toward the outer coastal waters of NE Florida. Otherwise, generally fair weather prevails across the basin west of the Cabo Verdes. At the surface, moderate to fresh E-SE trade winds are found between the Bahamas and Cuba and fresh winds off the coast of northern Hispaniola, as confirmed by recent satellite scatterometer data. Seas to 7 ft are noted off northern Hispaniola. Moderate to locally fresh trade winds prevail across the tropical Atlantic south of 24N east of the Lesser Antilles, with seas generally 4 to 7 ft. Meanwhile, the tight pressure gradient between the aforementioned ridge and lower pressures in NW Africa result in fresh to near gale NE winds and moderate to locally rough seas north of 20N and east of 25W. North of 24N and west of 30W, moderate or weaker winds and slight to moderate seas prevail. For the forecast west of 55W, the Bermuda High extends a ridge west-southwestward into central Florida this morning. The ridge will shift eastward and weaken Sat night through Mon, then reorganize and strengthen modestly along 60W Tue and Wed. The associated pressure gradient will support gentle to moderate winds, except for fresh to locally strong E to SE winds off the northern coast of Hispaniola through Sat. Active thunderstorms are expected across the NW zones through Tue as an upper level trough shifts slowly offshore of the SE U.S. coast. $$ Stripling
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Page last modified: Saturday, 12-Jul-2025 13:51:58 UTC