{"msg": "579\nAXNT20 KNHC 230358\nTWDAT \nTropical Weather Discussion\nNWS National Hurricane Center Miami FL\n0615 UTC Sun Aug 23 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 \n0330 UTC.\n...TROPICAL WAVES...\nA tropical wave has its axis along 30W south of 19N moving \nwestward at 10 to 15 kt. Scattered moderate to isolated strong \nconvection is near the southern end of the wave axis from 05N to \n10N between 28W and 35W.\nAnother tropical wave has its axis along 50W south of 19N moving \nwestward at 15 to 20 kt. No significant convection is noted with\nthis feature at this time.\nA tropical wave is over the Lesser Antilles, with axis along 62W \nsouth of 20N, moving westward at 15 to 20 kt. Convection is \nlimited near the wave axis at this time.\nA tropical wave is over the western Caribbean along 84W south of \n21N, moving westward at 10 to 15 kt. The wave appears to enhance \nconvection over parts of Panama and Costa Rica.\n...MONSOON TROUGH/ITCZ...\nThe monsoon trough enters the Atlantic through the coast of Africa \nnear 20N17W and continues southwestward to 07N35W. The ITCZ \nextends from 07N35W to 07N45W. Aside from the convection described\nin the section above, scattered showers are noted along the ITCZ.\n...GULF OF AMERICA...\nScattered showers and thunderstorms are active over the Yucatan \nPeninsula. Elsewhere, a surface ridge continues to dominate the \nGulf waters, anchored by 1018 mb high pressure located near \n25N95W. This pattern is supporting light to gentle winds and \nslight seas, except for gentle to moderate winds and 3 to 5 ft \nseas over the Bay of Campeche east of the trough in that area.\nFor the forecast, weak high pressure will remain centered over the\nbasin into late next week, leading to gentle to moderate winds\nand generally slight seas. A surface trough will generate fresh\nwinds north and west of the Yucatan Peninsula in the early\nevenings, which will pressure further offshore through the Bay\nof Campeche during the overnight hours. \n...CARIBBEAN SEA...\nThe pressure gradient associated to high pressure over the western\nAtlantic and relatively lower pressure in northern South America\nis sustaining fresh to strong trades primarily over the south-\ncentral Caribbean. Seas up to 8 ft are with these trades as noted\nin recent altimeter data. Moderate to fresh trades and moderate \nseas are elsewhere, except in the NW Caribbean where light to \ngentle winds and slight to moderate seas are noted.\nFor the forecast, the pressure gradient will continue to support \nfresh to strong trades and rough seas over the south-central \nCaribbean through next week. Elsewhere, mainly moderate to fresh \ntrades and moderate seas will prevail, aside from light to gentle \nwinds and slight seas in the NW part of the basin. A weak tropical\nwave just west of the Lesser Antilles will move across the basin \nduring the upcoming week. Another weak tropical wave will enter \nthe eastern Caribbean Mon night and reach the western part of the \nbasin late in the week. Yet, another tropical wave may approach \nthe Lesser Antilles and far eastern Caribbean late on Wed and move\nacross the eastern Caribbean Thu and Thu night. The gradient \nassociated with these waves will lead to periods of enhanced winds\nafter their passages. \n...ATLANTIC OCEAN...\nA 1020 mb high pressure centered between the Bahamas and Bermuda \nnear 28N74W dominates the western Atlantic west of 60W. A surface\ntrough extends from 31N79W to 24N79W. Showers and thunderstorms \nare associated with this trough. Satellite derived wind data \nindicate mainly gentle to moderate winds on either side of the \ntrough axis. Moderate to fresh E to SE winds and seas of 3 to 5 \nft are noted off Hispaniola and eastern Cuba, including approaches\nto the Windward Passage. Light to gentle winds and slight to \nmoderate seas prevail elsewhere W of 60W. Farther east, a weak \n1018 mb low pressure is located near 30N59W. A trough extends \nfrom the low center to near 28N61W based on scatterometer data. \nScattered showers, with embedded thunderstorms, are ahead of these\nfeatures. The remainder of the forecast area in under the \ninfluence of broad 1028 mb high pressure centered north of the \nregion near 35N42W. This pattern is supporting moderate to fresh \nNE to E winds and 5 to 7 ft seas across the basin, with the \nexception of fresh to strong N to NE winds and rough seas from 19N\nto 23N E of 22W to the coasts of Mauritania and Western Sahara. A\ncold front is approaching the Madeira Islands. Some shower \nactivity is along the frontal boundary.\nFor the forecast west of 55W, the low will drift westward\non Sun, then accelerate northward early next week. Otherwise, \nhigh pressure will maintain light to gentle winds N of 23N through\nthe period. To the south, moderate to fresh trades will prevail, \nwith locally strong winds pulsing at times offshore Hispaniola and\ninto the Windward Passage. The northern portion of a tropical \nwave will move across the waters S of about 23N and E of the \nBahamas early next week freshening the trades. By Wed, the \nnorthern portion of another tropical wave may move across the SE \nportion of the area, increasing the trades over those waters. \n", "title": "Atlantic Tropical Weather Discussion", "id": "1203854117146066946", "issued": "2026-08-23T06:15:00Z", "wmo": "AXNT20", "source": "NOAA/NWS National Hurricane Center, received via the National Weather Wire Service", "page": "https://hurricane.terrapin.com/text/1203854117146066946"}