


Tropical Weather Discussion
Issued by NWS
Issued by NWS
071 AXNT20 KNHC 082326 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 0015 UTC Sat Aug 9 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 1800 UTC surface analysis and satellite imagery through 2300 UTC. ...TROPICAL WAVES... A central Atlantic tropical wave is along 41W-42W, south of 24N, moving west at 10-15 kt. 1013 mb low pres is noted along the wave axis near 18.5N41.5W. A cluster of scattered moderate convection has developed in recent hours over the low center, from 18N to 21N between 42W and 44W. Tropical development of this system appears unlikely during the next day or two due to surrounding dry air. However, environmental conditions are forecast to become more conducive in a few days. A tropical depression could form during the early or middle part of next week while the system moves northwestward to northward across the central tropical and subtropical Atlantic. This feature has a low (near zero) chance of tropical development in the next 48 hours and a medium chance in the next 7 days. Refer to the latest TROPICAL WEATHER OUTLOOK issued by the National Hurricane Center at website: https://www.nhc.noaa.gov/text/MIATWOAT.shtml for more details. ...MONSOON TROUGH/ITCZ... The monsoon trough axis enters the Atlantic through the coast of Mauritania near 19.5N16.5W and continues southwestward to 10.5N30W to 13N35W. The ITCZ is analyzed from 11N46W to the coast of Venezuela near 09N61W. Scattered moderate to strong convection is occurring from 07N to 16.5N and east of 20W. Scattered moderate isolated strong convection is noted from 07N to 11N between 42W and 56W. GULF OF AMERICA... A stalled front lingers across the NE Gulf waters along about 29N, from northern Florida to the mouth of the Mississippi River. A surface trough extends across central Florida to near western Cuba, Scattered moderate to strong convection continues about this trough east of 85W, from Cuba to the Florida Big Bend, and extends inland across much of central Florida. Scattered moderate convection dots portions of the remainder of the Gulf. Weak high pressure across the western Gulf analyzed at 1200 UTC appears to have temporarily dissipated. Light to gentle winds and slight seas prevail across the Gulf, highest near thunderstorms currently across the eastern Gulf. For the forecast, weak high pressure will continue to dominate the weather pattern across the Gulf waters into early next week supporting mostly gentle to moderate winds and slight to moderate seas. Fresh northeast to east winds will occur Mon night west of the Yucatan Peninsula as a trough develops inland during the afternoons, then shifts westward into the Bay of Campeche in the evenings and at night. CARIBBEAN SEA... Widely scattered moderate convection is noted across the NW basin between Jamaica and the Yucatan Peninsula, while a small cluster of similar convection is halfway between Jamaica and Colombia. Fair weather otherwise prevails across the Caribbean. Moderate to locally fresh trade winds prevail across the east and south- central Caribbean, where seas are 4 to 6 ft. Elsewhere, gentle to moderate trades prevail, with seas of 1-3 ft. For the forecast, Weak high pressure north of basin with combine with the Colombian low to support fresh to locally strong winds and moderate to rough seas over the waters just offshore Venezuela and Colombia through Sat, then mainly moderate to fresh winds and moderate seas are expected. Elsewhere, gentle to moderate winds and slight to moderate seas are forecast through early next week. Trades may increase to fresh speeds over the central and eastern portions of the basin early next week as a tropical wave moves across the region. In the Gulf of Honduras, pulsing winds of fresh speeds with moderate seas are expected through early next week. ATLANTIC OCEAN... A surface trough extending from 30N80W across central Florida continues to support scattered moderate isolated strong convection across adjacent waters, from 23N to 30N between 74W and 80W, and are supported by an upper level low between 65W and 75W. A stationary front across north Florida extends northeastward to beyond 32N77W, and is producing scattered moderate convection north of 30N west of 76W. the front then dives southeastward to near 31N along 59W, where scattered moderate convection is occurring the south from 27N to 31N between 58W and 65W. 1018 mb high pressure is centered between these areas of convection near 29N68W. Gentle to moderate trade winds prevail across the basin, with 3-6 ft seas in open waters. East of the tropical wave along 41W-42W, moderate to locally fresh NE winds prevail north of 16N to 25W, with seas of 6 to 8 ft. 1027 mb high pressure is centered near 33N35W. The pressure gradient between the associated ridge and lower pressure across western Africa is producing fresh to strong N to NE winds north of 18N and east of 25W to the coast of Morrocco. Seas are 6 to 9 ft across this area. For the forecast west of 55W, a relatively weak pressure gradient across the region will support gentle to moderate winds and slight to moderate seas through Sun, except for occasional fresh pulsing winds near Hispaniola. Low pressure (AL96) is likely to approach the eastern waters late Sun into Mon. Development of this system into a tropical cyclone appears unlikely during the next day or two due to surrounding dry air, but environmental conditions are forecast to become more conducive in a few days. A tropical depression could form during the early or middle part of next week while the system moves northwestward to northward across the central tropical and subtropical Atlantic. Currently, there is a medium range of tropical cyclone formation over the next 7 days. $$ Stripling