The Atlantic Tropical Weather Discussion is an essential, highly technical meteorological product issued by the National Hurricane Center (NHC). This detailed diagnostic narrative provides real-time analysis of current atmospheric conditions, marine weather patterns, and active weather systems across a massive geographical area. The report comprehensively covers North America, Central America, the Gulf of Mexico, the Caribbean Sea, the northern sections of South America, and the open waters of the Atlantic Ocean stretching all the way to the African coast from the equator to 31°N. By synthesizing data from advanced satellite imagery, surface weather observations, specialized Doppler radar networks, and complex computer models, forecasters deliver critical updates on the environment shaping potential tropical development.
Atlantic Tropical Weather Discussion
Expires:No;;007811 AXNT20 KNHC 130608 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 0615 UTC Tue Oct 13 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 0000 UTC surface analysis and satellite imagery through 0530 UTC. ...TROPICAL WAVES... A tropical wave is analyzed along 32W, from 10N to 20N, moving westward near 10 kt. A 1010 mb low pressure is analyzed at the wave axis near 17N32W. Fresh to strong winds are approximately within 390 nm NE semicircle, where seas are 8 to 10 ft. Numerous moderate scattered strong convection is present from 15N to 22N between 23W and 31W. Scattered moderate convection is elsewhere from 08N to 16N between 30W and 37W. Environmental conditions appear, at best, only marginally conducive for development of this system before upper-level winds become too strong for any further development on Tuesday. Regardless, heavy rainfall is expected to continue for the next day or two across western portions of the Cabo Verde Islands, and some flooding is possible there as the system moves slowly northward to north-northwestward. There is a low chance for tropical cyclone development in the next 48 hours, and through next 7 days. A tropical wave is analyzed near 45W, from 10N to 20N, moving westward near 10-15 kt. Scattered moderate isolated strong convection is observed from 09N to 16N between 36W and 46W. ...MONSOON TROUGH/ITCZ... The monsoon trough enters the Atlantic near 14N17W to 13N35W to 11N48W. The ITCZ extends from 11N48W to 10N55W to 10N62W. See information on the convection in the Tropical Waves section above. ...GULF OF AMERICA... A weakening stationary front extends from SW Florida near 25N81W to the Yucatan adjacent waters near 22N90W to 23N93W. A 1018 mb high is located over the Mississippi/Alabama coastal waters, which is providing gentle to moderate NE to E winds across the eastern half of the Gulf S of 27N, and E to SE winds of the same speed W of 90W. Seas basin-wide are mainly slight with some areas reaching 4 ft. For the forecast, the stationary front will dissipate through Wed. High pressure building in the wake of the front over the north-central Gulf will support E to SE winds and moderate seas from the Florida Straits to the Texas coast, and gentle breezes and slight seas elsewhere. A cold front will enter the NW Gulf Fri night, and reach from SW Florida to the far SW Gulf by Sat night. Strong to near-gale force winds and rough seas will follow the front, with strong gales possible off the coast of Mexico between Tampico and Coatzacoalcos Fri night through Sat night. ...CARIBBEAN SEA... Scattered showers and tstms are over the lee of Cuba adjacent waters, in the Windward Passage and in the Gulf of Honduras. A middle-level low is supporting scattered to isolated showers over the eastern half of the basin. This low aloft reflects at the surface on a trough that is moving across western Hispaniola. Otherwise, the passage of a cold front N of the area along with low pressure E of the Bahamas are supporting a weak pressure gradient across the region, thus resulting in moderate or weaker trade winds and slight to moderate seas, except for fresh winds offshore Venezuela in the south-central Caribbean. For the forecast, scattered showers and thunderstorms will be active across the central Caribbean through tonight, associated with an upper level low. Fresh winds across the south-central Caribbean will diminish through tonight as high pressure north of the region shifts eastward. Moderate to fresh E to SE winds and moderate seas will persist through midweek across the Caribbean, then increase again later in the week as high pressure builds north of the area. ...ATLANTIC OCEAN... A weak cold front extends from 31N70W to Freeport in the Bahamas where it stalls. Ahead of the front, a surface trough extends from 29N70W to 25N76W, which is supporting isolated showers ahead of it to approximately 67W. Farther east, a 1014 mb low is centered near 26N66W. however it lacks convection. The central and eastern subtropical Atlantic are under the influence of the Azores ridge with a weakening stationary front that extends from 31N32W to 27N51W. A surface trough connects to the tail of this front and continues to 22N54W. Further east, there is another trough near 39W, however all these features lack convection. Moderate or weaker winds and moderate seas are N of 20N W of 44W. East of 44W, winds are fresh to strong in the NE semicircle of a low connected to a tropical wave near 32W. Fresh to locally strong winds are also ongoing between the coast of W Africa and the Canary Islands. For the forecast west of 55W, the cold front will continue moving east tonight, stall on Tue, then dissipate through Wed. A second reinforcing front will move southward into the waters east of 75W Tue into Wed, then stall and dissipate along 29N through Thu. A stronger cold front will move into the waters off NE Florida by late Fri night into early Sat morning, and reach from Bermuda to South Florida by late Sat. Strong to near-gale force winds and rough seas will follow the front. $$ Ramos |
This data is sourced directly from the National Hurricane Center (NHC).