000 AXNT20 KNHC 240401 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 0605 UTC Thu Nov 24 2022 Tropical Weather Discussion for North America, Central America Gulf of Mexico, 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 0400 UTC. ...MONSOON TROUGH/ITCZ... The monsoon trough extends from Sierra Leone near 08N13W to 08N15W. The ITCZ continues from 08N15W to 05N52W. Scattered moderate convection is observed from the equator to 10N, between 15W and 35W. ...GULF OF MEXICO... A surface trough remains over the western Gulf and runs from the eastern Bay of Campeche near 19N93W to near Corpus Christi, Texas. In the north central basin east of the trough, moderate easterly winds dominate with 4 to 6 ft seas. A smaller fetch area is only building 2 to 3 ft seas in the eastern Gulf. West of the trough, winds shift to fresh Northwesterlies with 6 to 8 ft seas. For the forecast, high pressure over the area will gradually shift eastward through Fri as low pressure develops over Texas. A weak cold front associated to the low pressure is expected to move into the northwest Gulf late Thu night into early Fri, stall, then lift north Fri night ahead of the low pressure moving into the Texas coastal plains. The low pressure will move into the lower Mississippi Valley through Sat, while an attendant cold front moves into the western Gulf. The front will weaken as it moves through the southeast Gulf by late Sun, while high pressure builds over the northern Gulf behind the front through Mon. ...CARIBBEAN SEA... An upper-level low over the far SE Caribbean continues to generate scattered showers east of 65W. A surface trough in the NW Caribbean is triggering scattered moderate convection from 15N to 18N, between 80W and 84W. Moderate to fresh trades and seas of 5 to 7 ft are noted over the east and central Caribbean. Gentle to moderate winds are over the western Caribbean with seas of 3 to 5 ft. For the forecast, the pressure gradient across the area will slacken tonight allowing for winds and seas to diminish across the basin, except for occasionally fresh east winds south of Hispaniola and through the Windward Passage. A weak cold front may approach the Yucatan Channel this weekend before dissipating late Sun or Mon. ...ATLANTIC OCEAN... A cold front extends across the western Atlantic from 31N63W to 28N73W where it becomes stationary and continues to 31N80W. North of these boundaries, isolated moderate convection is embedded in widespread cloudiness. Winds are moderate to fresh from the east with 5 to 7 ft seas. South of the front to about 22N, winds are gentle with 4 to 6 ft seas. The remainder of the subtropical Atlantic is dominated by the pressure gradient between a 1023 mb high centered near 30N36W and lower pressure in the vicinity of the ITCZ. While the high-pressure center is keeping winds gentle north of 25N, 9 to 12 ft NW swell is propagating into the region between 30W and 50W, originating from storm force winds in the mid-latitudes. Winds gradually increase southward, becoming moderate to fresh easterlies between 05N and 25N. Seas are generally 6 to 9 ft in this area. For the forecast west of 55W, the cold front will shift east of the area through Thu. Expect strong winds and occasionally rough seas overnight into Thu near the front north of 30N and east of 65W. Another front will move into the waters off northeast Florida late Fri. Expect strong winds and rough seas north of 27N near the front through Sat as it reaches from Bermuda to the northern Bahamas by early Sat, and from 31N55W to the Florida Straits by late Sat. Winds and seas will diminish across the region through into Sun as high pressure builds behind the front between northeast Florida and Bermuda. Southerly winds will increase off northeast Florida late Sun ahead of a weak reinforcing front expected to move off the coast Sun night, and reach from Bermuda to the Florida Straits by late Mon. $$ Flynn