Tropical Weather Discussion
Issued by NWS
Issued by NWS
787 AXNT20 KNHC 081042 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 1215 UTC Mon Dec 08 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. ...SPECIAL FEATURES... Gulf of America Gale Warning: A strong cold front that moved into western portion of the Gulf last night presently extends along a position from near Mobile, Alabama southwestward to 28N92W and to NE Mexico. The front will sweep across the rest of the basin through Tue, perhaps stalling from near western Cuba and the Straits of Florida by Tue evening. Fresh to strong northwest to north winds and rough seas are expected to follow behind the front across the western and north- central Gulf. These winds will reach near-gale to gale-force off Veracruz this afternoon into this evening along with seas building to around 12 ft (4 M). Afterward, winds and seas will gradually diminish Tue into Wed as the front stalls from near western Cuba and the Straits of Florida to the Yucatan Peninsula by Tue evening, and as high pressure settles across the central Gulf. Please refer to the latest High Seas and Offshore Waters Forecasts issued by the National Hurricane Center at the website https://www.nhc.noaa.gov/text/MIAHSFAT2.shtml and https://www.nhc.noaa.gov/marine/offshores.php for more details. ...MONSOON TROUGH/ITCZ... The monsoon trough axis enters the Atlantic through the coast of southern Sierra Leone to 07N12W, and extends southwestward to 06N16W, where it transitions to the ITCZ to 06N24W to 04N34W to 05N39W and to near 05N47W. Scattered moderate to isolated strong convection is within 180 nm south of the trough between 24W-26W, and within 60 nm south of the ITCZ between 30W-34W. Scattered moderate convection is within 60 nm north of the ITCZ between 24W-28W. ...GULF OF AMERICA... Please see the SPECIAL FEATURES section above for information on gale conditions expected offshore of Veracruz, Mexico beginning this afternoon. A weak cold front extends from southwest Florida to 26N86W, where it begins to dissipate to near 25N91W. Isolated showers and thunderstorms moving eastward are along the front E of 85W. To the W of the front, a strong cold front is analyzed from near near Mobile, Alabama southwestward to 28N92W and to NE Mexico. Fresh to near gale northerly winds as seen in an overnight scatterometer satellite data pass are behind the second cold front across the NW Gulf. Seas are in the range of 7 to 10 ft over the NW Gulf west of 94W. Scattered showers and isolated thunderstorms are noted in the western Gulf from 21N to 24N between 95W and 97W, and also south of 24N between 85W and 89W. Gentle to moderate west to northwest winds and seas of 3 to 5 ft are over the east- central Gulf. Light to gentle north to northeast winds and seas of 1 to 3 ft are over the rest of the basin. For the forecast, the weak cold front will weaken further today as it drifts southeastward today. The strong cold front is expected to overtake the weak front this afternoon as it sweeps southeastward across the basin through Tue. This will lead to fresh to strong northwest to north winds and building seas in the wake of this front. The fresh to near gale-force northwest to north winds behind the front will begin to slowly diminish this afternoon, and continue into Wed as the front stalls across the entrance to the Yucatan Channel and Straits of Florida, and high pressure settles across the central Gulf. Light to gentle winds and slight seas will persist late Wed through Fri night. ...CARIBBEAN SEA... Atlantic ridging near 25N continues to influence the gradient across the basin. It is presently allowing for moderate to fresh trade winds along with seas of 5 to 7 ft are over the eastern and central sections of the basin while light to gentle winds and seas of 3 to 5 ft are elsewhere across the sea. Isolated showers and thunderstorms are noted west of about 75W. For the forecast, weak ridging north of the basin near 25N will support moderate to fresh trade winds and moderate seas east of about 84W through the period, except trades will increase to fresh to strong speeds across the central Caribbean and the eastern part of the southwestern Caribbean starting late Tue night as high pressure that builds over the Gulf of America leads to a tightening of the gradient, and while at the same time a weakening cold front approaches the northwestern Caribbean on Tue stalls from near western Cuba to the Yucatan Peninsula through Wed night before dissipating. Moderate or lighter winds and slight to moderate seas will prevail W of 84W. Otherwise, long- period northeast to east swell will support rough seas across the Atlantic waters and passages of the Lesser Antilles through Fri night. ...ATLANTIC OCEAN... A weak cold front extends from near 31N73W to 29N78W, then becomes a warm front to a 1012 mb low near 28N80W. Fresh to locally strong southwest winds and moderate to rough seas are east of the front to near 70W from 26N to 30N. Scattered to numerous showers and thunderstorms are E of the front to near 72W from 27N to 31N. Overnight scatterometer satellite data generally depicts fresh to strong southwest to west winds north of 27N between 24W and 49W. Seas are 10 to 13 ft with these winds. Otherwise, light to gentle winds and 7 to 9 ft are seen from 20N to 25N. For the tropical Atlantic from 07N to 20N between 35W and the Lesser Antilles, moderate to fresh northeast to east winds with 6 to 9 ft seas are noted. Gentle to moderate mostly southerly winds along with seas of 5 to 7 ft are over the rest of the basin west. For the forecast west of 55W, the fresh to locally strong winds and moderate to rough seas that are east of the front to will gradually shift eastward through late Tue and expand in coverage as a stronger cold front overtakes the weak cold front. The southwest winds are expected to reach near gale force. The cold front will reach from near Bermuda to the NW Bahamas and Straits of Florida Tue afternoon, then gradually weaken and stall along about 26N early Wed as low pressure north of the forecast waters moves northeastward well to the northeast of the area. A weakening cold front is expected to move across the waters north and northeast of the Bahamas from late Wed through Fri. Otherwise, large north swell will move into the regional waters Tue through Wed, then subside over the SE zones Fri. $$ Aguirre