Tropical Weather Discussion
Issued by NWS
Issued by NWS
247 AXNT20 KNHC 110526 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 0615 UTC Tue Nov 11 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 0000 UTC surface analysis and satellite imagery through 0450 UTC. ...SPECIAL FEATURES... Gulf of America Gale Warning: A strong cold front has exited the southern portions of the basin this evening and tonight, and now extends from the NW Bahamas across central Cuba and into the NW Caribbean and Gulf of Honduras. Strong high pressure building southward across eastern Mexico behind the front is forcing strong to near gale-force N to NE winds and rough to very rough seas across all but far NW portions of the Gulf tonight, with gale force NW to N winds and seas around 15 ft lingering across the waters just offshore of the Veracruz area. Recent satellite scatterometer data showed NW to N winds of 30-35 kt within 75 nm of the Mexican coast, S of 20.5N to near Punta Roca Partida. These winds are expected to diminish just below gale-force in the next few hours, and then below 30 kt later tonight. Conditions will improve basin wide by Tue evening as high pressure shifts eastward across the NE Gulf and the pressure gradient relaxes across the southern Gulf. Western Atlantic Gale Warning: A strong cold front continues to move east-southeastward across the western Atlantic tonight, and now extends from 31N72W through the NW Bahamas and into central Cuba near 79W. Fresh to strong NW winds are behind the front from 31N through the Straits of Florida. Winds are expected to increase to gale-force in the next few hours offshore of northeast Florida, N of 29N. As the front continues moving east-southeastward overnight, these gales will shift eastward behind the front through Tue, and remain north of 29N. Seas are expected to build to 12-16 within these area of winds through late Tue. Elsewhere behind the front, strong to near gale force NW to N winds will dominate the region through Tue night, producing large NW swell and seas of 8 to 14 ft. By late Wed, the front will stall from near 31N55W through the Turks and Caicos Islands and into eastern Cuba, where it will weaken through late week. Weakening high pressure will build eastward off of NE Florida during this time, leading to diminishing winds and seas across the Atlantic waters N of the front. For more information about these warnings, please see the latest High Seas Forecast issued by the National Hurricane Center at website: https://www.nhc.noaa.gov/text/MIAHSFAT2.shtml for more information. Significant Rainfall over Central America: A cold front is moving southward across the NW Caribbean Sea tonight and will reach from eastern Cuba to NE Honduras by Wed. Strong northerly winds behind the front will enhance moisture convergence, leading to areas of strong convection across Guatemala, Belize, Honduras, and Nicaragua during this time. As the front progresses southward tonight, it will interact with a surface trough off the coasts of Nicaragua and Costa Rica, resulting in areas of very heavy rainfall across Guatemala, Belize and the Gulf of Honduras. The front will then reach Guatemala, and Honduras on Tue morning, after which it will become stationary and linger across the region through Thu. Significant rainfall in excess of 6 inches over the course of several days will be possible during this period, and is likely to result in life- threatening flash flooding and landslides. This information was provided by the International Desk at the Weather Prediction Center. Please refer to your local meteorological service for more details. ...MONSOON TROUGH/ITCZ... The monsoon enters the Atlantic waters near Dakar, Senegal along 15N17.5W and continues southward to near 06.5N20W then to 08N26W. The ITCZ then extends from that point to 06N39W to the coast of Brazil near 04N51W. Scattered moderate isolated strong convection is noted from 04.5N to 15N between 10W and 20W. Scattered moderate convection is occurring from 06.5N to 12.5N between 20W and 44W. ...GULF OF AMERICA... Please see the Special Features section for additional information on the Gale Warning in the SW Gulf. The cold front has moved southeast of the basin tonight. Recent satellite scatterometer data shows strong to near gale- force N winds across all but NW portions of the basin, with winds to gale-force depicted across the coastal waters in the Florida Big Bend region, and near gale-force through the Yucatan channel. Rough and building seas follow the cold front, producing seas of 8 to 14 ft across east, central and western portions, and 10 to 15 ft across the Bay of Campeche. Seas are 7 ft or less across the nearshore waters of the NE Gulf and N of 26N to the W of 90W. reaching from Key Largo, Florida to Cancun, Mexico. A recent scatterometer satellite pass confirmed 40 kt winds off Veracruz, Mexico and mostly 25 to 30 kt winds elsewhere. Seas are 10 to 13 ft over the southwest Gulf, and 7 to 10 ft elsewhere. For the forecast, the cold front has moved southeast of the basin this evening and tonight. NW gales will prevail through around midnight in the offshore waters near Veracruz, Mexico. Near- gale force N winds and rough to very rough seas will dominate the remainder of the basin tonight, then gradually diminish Tue as high pressure shifts eastward into the NE basin. For the latter half of the week, fairly benign marine conditions are anticipated, with southerly return flow developing east of the high pressure, producing fresh to strong winds to the NW Gulf by this weekend. ...CARIBBEAN SEA... Please refer to the Special Features section above for details on the significant rainfall event expected across Central America and adjacent waters during the next few days. A strong cold front has moved southward into the basin tonight, and extends from central Cuba along 80W to 20.5N84W to the Gulf of Honduras and then westward and inland across northern Guatemala. Recent satellite scatterometer data shows strong to near gale- force N winds behind the entire front from Cuba to Belize, with strong winds through the Yucatan Channel. Seas are 8 to 12 ft in building northerly swell through the Yucatan Channel and 4 to 7 ft and quickly building seas elsewhere N of the front. Scattered moderate to strong convection is occurring along and W of the front to the coast of Belize. Further south, the interaction between the eastern end of the Pacific Monsoon Trough and a surface trough offshore of Costa Rica and Nicaragua continues to support numerous moderate to scattered strong convection over much of the western Caribbean S of 18N between 77W and the coasts of Costa Rica, Nicaragua and NE Honduras. Fresh NE to E winds prevail across the area, where seas are 5 to 8 ft in open waters. E of 77W, recent satellite scatterometer data shows fresh E trade winds, and strong winds S of 15N between 70W and 77W. Seas are 5 to 7 ft E of 70W and 6 to 10 ft W of 70W, except for 2 to 3 ft south of Cuba. For the forecast, a strong cold front across the NW Caribbean will stall Tue from eastern Cuba to NE Honduras, then weaken and gradually dissipate for the latter half of the week. Behind the front, strong to near gale NW to N winds and rough seas prevail, and will gradually veer NE and slowly diminish through Wed. Aside from the strong winds and seas, the front will support the development of thunderstorms and heavy rainfall over Central America and adjacent waters through at least Thu. Strong winds and rough seas will prevail in the south- central Caribbean through Tue. ...ATLANTIC OCEAN... Please refer to the Special Features section above for details on the Gale Warning in effect for the W Atlantic beginning tonight. Recent satellite scatterometer data shows fresh to strong NW to N winds behind a strong cold front moving across the western Atlantic, extending from near 31N72W through the NW Bahamas and to central Cuba along 79W. Fresh SW winds prevail ahead of the front to 68W, to the N of 27N. Seas are 6 to 10 ft in building NW swell behind the front and 5 to 8 ft in the fresh winds ahead of the front. Scattered moderate convection is found ahead of the front along a pre- frontal trough that extends from 31N68W to the southern Bahamas. The remainder of the subtropical Atlantic is under the influence of a broad ridge that is anchored by a 1025 mb high near 31N51W. Moderate to fresh NE to E winds and 5 to 9 ft seas dominate the open Atlantic waters south of 25N. Elsewhere, gentle breezes and long- period NW swell is supporting rough seas to 9 ft over the eastern subtropical and tropical Atlantic as well as portions of the central tropical Atlantic. For the forecast west of 55W, the cold front will move east- southeast through Tue night, then stall over the SE waters into late this week. Gales will develop behind the front N of 29N tonight, then spread east and prevail through Tue, along with very rough seas. S of 29N and behind the front, strong N winds and rough to very rough seas will dominate. As the front stalls and weakens, weakening high pressure will build eastward off of northern Florida, leading to diminishing winds to moderate to fresh on Wed. Rough seas in N swell will continue for waters E of 65W through Thu. $$ Stripling