{"msg": "976\nAXNT20 KNHC 270435\nTWDAT\nTropical Weather Discussion\nNWS National Hurricane Center Miami FL\n0615 UTC Tue Oct 27 2026\nTropical Weather Discussion for North America, Central America\nGulf of America, Caribbean Sea, northern sections of South\nAmerica, and Atlantic Ocean to the African coast from the\nEquator to 31N. The following information is based on satellite\nimagery, weather observations, radar and meteorological analysis.\nBased on 0000 UTC surface analysis and satellite imagery through \n0400 UTC.\n...SPECIAL FEATURES...\nHeavy Rainfall in the Northern Caribbean: Deep-layer troughing \nextending southward through the Bahamas into the northern Caribbean\ncombined with abundant tropical moisture will support periods of \nheavy rainfall over Hispaniola, the southern Bahamas, and the \nTurks and Caicos Islands through tonight. The trough will \ngradually shift north through Wed while weakening. Very heavy \nrainfall will bring a potential for dangerous and life- \nthreatening flash flooding, particularly over portions Haiti and \nthe Dominican Republic. Please refer to your local weather \nservices and the International Desk at the Weather Prediction \nCenter for more information.\nNW Atlantic Significant Swell: A tight pressure gradient between \na 1028 mb high pressure centered over the eastern United States \nand a stationary front extended from SE of Bermuda to the Bahamas \nis supporting widespread strong to near gale-force NE winds NW of \nthe front, along with very rough seas of up to 18 ft. These very\nrough seas extend south to 25N and E to 67W. The front will remain\ngenerally stationary, and only gradually weaken through Wed as the\nhigh pressure slides eastward. This will keep strong winds and\nvery rough seas in place through at least Wed. Mariners are \nurged to remain alert to these dangerous marine conditions and \ntake the necessary precautions to avoid these affected areas. \nPlease, see the latest NWS High Seas Forecast issued by the \nNational Hurricane Center at website \nhttps:www.nhc.noaa.gov/text/MIAHSFAT2.shtml for further details. \n...MONSOON TROUGH/ITCZ...\nThe monsoon trough axis enters the Atlantic near 14N16W and \nextends southwestward to 06N30W, where it transitions to the ITCZ\nand continues 08N43W and to 10N58W. Scattered moderate convection\nis noted from 04N to 09N E of 30W.\n...GULF OF AMERICA...\nThe pressure gradient between a 1028 mb high center over the \neastern United States lower pressure in the Caribbean is\nsupporting fresh to strong NE winds and rough seas over the\neastern Gulf, including the Florida Straits. Mainly moderate winds\nand seas prevail elsewhere. \nFor the forecast, the weather pattern will persist into midweek, \nfollowed by diminishing winds and seas into the upcoming weekend. \nElsewhere, gentle to moderate winds and moderate seas will prevail\nduring much of the workweek. \n...CARIBBEAN SEA...\nSee Special Features section above for information on heavy\nrainfall over Hispaniola.\n\nA deep-layer trough extending from eastern Cuba southward to near\n15N75W continues to support scattered moderate convection mainly\noffshore Hispaniola and Puerto Rico. Moderate to locally fresh N\nwinds and moderate to locally rough seas are noted in the NW basin\nW of 85W, with moderate trades and seas in the eastern basin.\nElsewhere, gentle winds and slight seas prevail. The eastern\nextension of the East Pacific monsoon trough is inducing scattered\nmoderate convection offshore Colombia. \nFor the forecast, the upper level trough will drift eastward \nthrough mid- week, keeping the chance of showers and thunderstorms\nover Hispaniola and Puerto Rico. Meanwhile, a surface trough over\nthe central Caribbean will drift westward over the next few days.\nHigh pressure across the eastern U.S. will continue to build \nsouthward across Florida and the Gulf of America through midweek, \nleading to moderate to fresh N to NE winds and moderate seas \nacross the western Caribbean W of the trough through Tue night. \nSeas of up to 8 ft in N to NE will continue to propagate across \nthe Yucatan Channel through Tue. Otherwise, moderate to fresh E to\nSE winds in the E Caribbean will diminish to gentle to moderate \nspeeds by tonight. \n...ATLANTIC OCEAN...\nSee Special Features section above for information on heavy \nrainfall over Hispaniola, the southern Bahamas, and the Turks and\nCaicos Islands and for Significant Swell causing very rough seas \nN of the Bahamas extending eastward to near Bermuda.\nSouth of the front and significant swell, mainly moderate S winds\nand rough seas prevail E to 55W. Another front has stalled further\neast, from 31N30W to 28N42W to 31N51W. Rough seas are N of this\nboundary, but winds on either side of it are moderate or weaker. \nThe remainder of the basin is under broad high pressure that \nsupports moderate to locally fresh trades winds south of about \n24N. Seas of 5 to 7 ft are over these waters. Gentle winds and \nmostly moderate seas are elsewhere N of 24N.\nFor the forecast west of 55W, the portion of a currently\nstationary front east of 60W is expected to move southeastward as \na cold front through Thu while a stationary front will persist \nover the waters N of 27N and W of 60W. A high pressure center will\nremain over the SE of the United States during this time. The \nfrequent gusts to gale- force will diminish by tonight, however, \nfresh to strong winds and rough to very rough seas in NE swell \nwill persist to the north of the front through Wed while gradually\ndiminishing. \n", "title": "Atlantic Tropical Weather Discussion", "id": "1222263976774991879", "issued": "2026-10-27T06:15:00Z", "wmo": "AXNT20", "source": "NOAA/NWS National Hurricane Center, received via the National Weather Wire Service", "page": "https://hurricane.terrapin.com/text/1222263976774991879"}