000 AXNT20 KNHC 090956 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 1205 UTC Sun Jan 9 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 0600 UTC surface analysis and satellite imagery through 0730 UTC. ...SPECIAL FEATURES... Gulf of Mexico Gale Warning: A cold front is forecast to move off the Texas coast tonight, reaching the SW Gulf by Mon morning. Gale force winds following the front will reach within 60 nm of Tamaulipas Mon, then within 60 nm of Veracruz Mon night into early Tue. Conditions will improve across the basin mid-week as the front pushes well southeast of the area. 6 to 9 ft seas will build behind the front, reaching 7 to 11 ft in the W-central Gulf, and 9 to 14 ft in the SW Gulf Mon night into Tue. Please read the latest NWS High Seas Forecast issued by the National Hurricane Center at website https://www.nhc.noaa.gov/text/MIAHSFAT2.shtml for more details. ...MONSOON TROUGH/ITCZ... The monsoon trough extends from the coast of Sierra-Leone near 08N13W to 07N15W. The ITCZ then continues from 07N15W to 04N26W to 07N34W to the coast of Brazil near 00N49W. Scattered moderate and isolated strong convection is evident on satellite imagery inland over NE Brazil near the ITCZ, extending offshore from the equator to 04N between 46W and 51W. Similar convection is noted from 05N to 08N between 27W and 36W. ...GULF OF MEXICO... A warm front is along the northern Gulf coast. No significant convection exists along the frontal boundary over the waters. A weak surface trough is in the SW Gulf just west of the Yucatan Peninsula with no associated convection. Moderate to fresh E-SE winds prevail across the basin. Seas are 3 to 5 ft in the SW Gulf, and 4 to 6 ft elsewhere, except 5 to 7 ft in the NW and N-central Gulf where winds were fresh to strong earlier. For the forecast, fresh to locally strong SE to S return flow will prevail across most of the Gulf ahead of the next cold front forecast to move off the Texas coast tonight. Fresh to strong winds will follow the front through the early part of the week, reaching gale force within 60 nm of Tamaulipas Mon, then Veracruz Mon night and early Tue. Conditions will improve across the basin mid-week as the front pushes well southeast of the area. ...CARIBBEAN SEA... The pressure gradient between the Azores high and the Colombian low continues to support strong winds noted by earlier scatterometer data within 120 nm of the coast of northern Colombia, accompanied by 7 to 10 ft seas. Fresh to strong NE-E winds are blowing across the approach to the Windward Passage along with 5 to 7 ft seas, with similar winds south of Hispaniola, in the lee of Cuba, and in the Gulf of Honduras. Moderate to fresh trades and seas of 4 to 6 ft prevail across the remainder of the basin. Scattered showers and thunderstorms are noted over the NW Caribbean, mainly west of 85W. For the forecast, the pressure gradient between high pressure north of the area and low pressure over Colombia will support pulses of fresh to strong trade winds across the central Caribbean and the passages through the early part of the week. Mainly moderate winds will prevail elsewhere. Moderate NE-E swell will impact the Tropical N Atlantic waters through the early part of the week before decaying. A cold front will approach the Yucatan Channel Tue, pushing southeast through the NW Caribbean while weakening through mid-week. ...ATLANTIC OCEAN... A cold front enters the area near 31N52W and extends SW to the Central Bahamas where the front stalls. North of the front, fresh to locally strong N to NE winds were noted on earlier scatterometer data. Seas are 8 to 12 ft north of the front, except 5 to 7 ft north of 28N and west of 75W. Seas are 5 to 7 ft south of the front. Scattered showers and isolated thunderstorms are in the vicinity of the front. The remainder of the tropical Atlantic Ocean is under the influence of the Azores high. Gentle to moderate return flow is noted north of 24N, between the cold front and 35W. Moderate to fresh NE to E winds prevail over the remainder of the tropical Atlantic, with locally strong winds noted north of 23N and east of 20W. Seas are mainly 8 to 11 ft in mixed northerly swell across the open tropical Atlantic waters, except 5 to 7 ft in the area of gentle to moderate winds. For the forecast W of 65W, the cold front will move SE across the basin through the remainder of the weekend. Fresh to locally strong NE winds and building seas are in the wake of the front as high pressure builds toward the area. Another cold front will move offshore Florida early Mon, then sink across the Bahamas through mid-week. Strong NE winds will likely follow this front. Low pressure may form along this front by mid-week. $$ Lewitsky