000 AXNT20 KNHC 140352 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 0605 UTC Sun May 14 2023 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 0350 UTC. ...MONSOON TROUGH/ITCZ... The monsoon trough extends from the coast of Guinea-Bissau near 12N17W to 07N28W. The ITCZ continues from 07N28W to 03N51W. Scattered moderate convection is observed from 03N to 08N between 13W and 25W. ...GULF OF MEXICO... Widespread convection continues tonight over the western Gulf, with a squall line analyzed from 23N97W to 18N96W. Thunderstorms along this feature are producing frequent lightning strikes, heavy downpours and strong, gusty winds. Outside of thunderstorms, the gradient between high pressure in the NE Gulf and lower pressure over Mexico is supporting mainly moderate E winds across the basin, with fresh to strong NE winds near the Yucatan Peninsula and gentle winds in the NE Gulf. Seas are 5-7 ft in the western Gulf, 3-5 ft in the central Gulf, and 1-3 ft in the eastern Gulf. Smoke from agricultural fires is covering portions of the western Gulf roughly W of 92W. The latest SAB analysis indicated a medium concentration of smoke over this region of the Gulf, including the Bay of Campeche. Weather observations in the NW Gulf also indicate the presence of haze. For the forecast, fresh to locally strong winds will pulse near and to the NW of the Yucatan Peninsula tonight. Winds will become easterly across most of the basin by late Sun into Mon as high pressure settles over the northern Gulf. Slight to moderate seas will prevail, reaching 7 or 8 ft in the NW Gulf through Sun under a persistent SE wind flow. Winds are forecast to diminish to light to gentle speeds on Mon and prevail through Thu night. ...CARIBBEAN SEA... The pressure gradient between a subtropical high-pressure ridge along 33N and lower pressure over the SW Caribbean supports moderate to fresh E winds across the majority of the basin, except for locally strong winds along the coast of Colombia and in the Gulf of Honduras. Gentle winds are observed in the lee of Cuba. Seas are 5-7 ft in the south central Caribbean and Gulf of Honduras, and 3-5 ft elsewhere. Smoke from agricultural fires is covering portions of the far NW Gulf, and has been most dense across the Gulf of Honduras where the latest SAB analysis indicated a medium concentration of smoke, and visibilities likely less than 5 nm. For the forecast, fresh to strong trade winds and moderate to rough seas are expected in the south-central Caribbean through tonight then mainly moderate to fresh winds will prevail through early next week. Fresh to strong E winds are also forecast in the Gulf of Honduras at night through Sun night with seas building to near 8 ft. Moderate to fresh winds elsewhere in the central and eastern Caribbean will diminish to gentle to moderate speeds Mon and continue through the remainder forecast period. ...ATLANTIC OCEAN... A stationary boundary extends from 31N48W to 24N71W, with the tail end beginning to dissipate. Earlier convection near the Bahamas has greatly subsided this evening with only scattered weak convection remaining from 23N to 29N between 71W and 77W. Winds are generally gentle to moderate from the E-SE throughout the western and central Atlantic with 3-6 ft seas. In the eastern Atlantic, the gradient between high pressure near the Azores and lower pressure over North Africa continues to support fresh to strong NE winds and 7-10 ft seas east of 40W and north of 20N. A recent scatterometer pass confirmed the strongest winds are occurring in the gaps between the Canary Islands. In the tropics, south of 20N, winds are generally moderate from the NE with 5-6 ft seas. For the forecast west of 55W, the weakening stationary front will dissipate on Sun. A cold front is forecast to reach the north-central waters Sun night and exit the area by Tue evening. Otherwise, surface ridging will dominate the remainder of the forecast period. $$ Flynn