Atlantic Tropical Weather Discussion
784 AXNT20 KNHC 090830 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 1215 UTC Wed Sep 9 2026 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 0830 UTC. ...TROPICAL WAVES... A tropical wave has its axis near 20W north of 03N, moving westward at 10 to 15 kt. Scattered moderate and isolated strong convection is noted from 10N to 17N and E of 23W. A tropical wave has its axis near 53W from 02N to 18N, moving westward at about 15 to 20 kt. Scattered showers are noted along the wave axis. A central Atlantic tropical wave has its axis near 64W from 19N southward, moving westward at 10 to 15 kt. Scattered moderate convection is noted from 10N to 16N between 60W and 64W. A central western tropical wave has its axis near 84W, south of 19N. It is moving westward at 10 to 15 kt. No significant convection is noted with this wave. ...MONSOON TROUGH/ITCZ... The monsoon trough enters the Atlantic near 20N17W, and continues southwestward to 10N32W. The ITCZ continues from 10N32W to 09N51W. Aside from convection noted in the tropical waves section above, scattered moderate and isolated strong convection is noted from 05N to 10N between 33W and 40W. ...GULF OF AMERICA... A stationary front extends across the eastern waters. Scattered showers are in the vicinity of the front. Gentle to moderate winds are noted over the SW Gulf as well as south of the Florida panhandle. Light too gentle winds prevail elsewhere. Slight seas dominate the Gulf waters. For the forecast, weak high pressure will persist across the Gulf through the weekend, producing a weak pressure gradient. This will support mostly light to gentle winds and slight seas over much of the waters. Winds will pulse to fresh with moderate seas off the western Yucatan Peninsula during the evenings due to a diurnal surface trough moving westward from the peninsula each night. ...CARIBBEAN SEA... Strong to near gale force winds, and rough seas, prevail over the south central Caribbean. Moderate to fresh winds, and moderate seas cover the remainder of the Caribbean waters, except for light to gentle winds in the lee of Cuba. For the forecast, the pressure gradient between the ridge and the Colombian low will support strong winds, locally to near-gale force, through Wed night before diminishing modestly through Fri. Rough seas will prevail over these waters with the persistent strong winds. Fresh to strong winds will pulse tonight in the Gulf of Honduras. Elsewhere, moderate or weaker winds and slight to moderate seas will prevail. Large easterly swell will accompany a tropical wave into the Tropical N Atlantic waters early Wed through Thu morning. ...ATLANTIC OCEAN... A stationary front extends from 31N62W to central Florida. Moderate winds are found N of the front. A surface trough extends from 29N61W to E Cuba. Scattered moderate and isolated strong convection is noted N of 27N within 180 nm E of the trough. Light to gentle winds are elsewhere N of 25N and W of 60W. The remainder of the waters are dominated by high pressure, anchored by a 1025 mb high centered near 31N45W. Light to gentle winds are over the waters S of the monsoon trough and E of 30W. Moderate to fresh winds dominate the remainder of the discussion waters. Moderate to rough seas prevail E of 40W, and S of 20N between 40W and 61W. Moderate winds are elsewhere over the discussion waters. For the forecast west of 55W, weak high pressure extending from the central Atlantic westward along about 26N to the NW Bahamas will gradually shift northeastward and strengthen through mid week. This will cause winds to increase slightly S of 21N through Thu. A stationary front will linger over the NW waters through mid week before lifting northward.