Tropical Weather Discussion
Issued by NWS
Issued by NWS
055 AXNT20 KNHC 111034 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 1215 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 0600 UTC surface analysis and satellite imagery through 1030 UTC. ...SPECIAL FEATURES... Western Atlantic Gale Warning: A strong cold front continues to move across the western Atlantic, extending from 31N70W to 22N79W. Gale-force NW winds have developed behind the front, mainly N of 29N. As the front continues moving east-southeastward today, these gales will shift eastward behind it. Seas are expected to build to 12-16 within these area of winds through tonight. 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 this warning, 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 along 14N17W and continues southward to near 08N26W. The ITCZ then extends from that point to 04N51W. Scattered moderate convection is noted from 06N to 10N between 30W and 42W. ...GULF OF AMERICA... Surface ridging continues to build across the basin. Strong to near gale NE winds prevail across most of the area except the NW corner, where light to gentle NE winds are noted. Rough and building seas are noted in the area of strong to near-gale winds, producing seas of 8 to 12 ft across east, central and western portions, and 10 to 14 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. For the forecast, near-gale force N winds and rough to very rough seas will dominate the basin this morning, then gradually diminish through the day as high pressure settles into the NE basin. For the latter half of the week, fairly benign marine conditions are anticipated, but southerly return flow east of the high pressure may bring 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 entered the W Caribbean, extending from 22N80W to 16N88W. Behind the front, strong to near gale N winds and rough seas prevail. 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, the front will stall today from eastern Cuba to eastern Honduras, then weaken and gradually dissipate for the latter half of the week. Aside from the strong winds and seas, the front will continue to support the development of heavy rainfall and thunderstorms 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. Recent satellite scatterometer data shows fresh to strong NW to N winds behind a strong cold front moving across the western Atlantic, extending from 31N70W to 22N79W. Fresh SW winds prevail ahead of the front to 65W, to the N of 27N. Seas are 8 to 14 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 30N70W to the southern Bahamas. To the E, a 1018 mb low is analyzed near 31N43W. A surface trough extends from the low to 29N45W with scattered showers. The remainder of the subtropical Atlantic is under the influence of a broad surface ridge. 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 front will continue to move east through tonight, then stall over the SE waters into late this week. Gale force NW winds, along with rough to very rough seas, will spread east through this afternoon. S of 29N, strong N winds and rough to very rough seas will dominate. As the front stalls and weakens, winds will diminish to moderate to fresh Wed, but rough seas in N swell will continue for waters E of 65W through Thu. $$ ERA