000 AXNT20 KNHC 120545 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 0605 UTC Fri Mar 12 2021 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 32N. The following information is based on satellite imagery, weather observations, radar and meteorological analysis. Based on 0000 UTC surface analysis and satellite imagery through 0520 UTC. ...MONSOON TROUGH/ITCZ... The monsoon trough passes through the coastal sections of Sierra Leone near 08N12W, to 05N19W. The ITCZ continues from 05N19W, to 02N30W, crossing the Equator along 36W, to 01S40W. Precipitation: scattered to numerous strong is in Liberia from 05.5N to 07.5N, and in the Atlantic Ocean from 03N to 05N between 08W and 11W, and from 01N to 03N between 15W and 19W. Isolated moderate to locally strong is elsewhere from 10N southward from 30W eastward. A surface trough is along 04N between 35W and 46W. Precipitation: widely scattered to scattered moderate and isolated strong is from 02N to 06N between 35W and 53W. GULF OF MEXICO... A surface ridge passes through NE Florida, to the north central Gulf of Mexico, to the coastal sections of Mexico near 20N97W. Broad surface anticyclonic wind flow spans the Gulf of Mexico. High pressure in the western Atlantic Ocean will shift eastward and weaken through Saturday. Southeasterly return wind flow in the western Gulf of Mexico will expand gradually, across the entire Gulf of Mexico through the weekend, becoming fresh to strong in the northwestern Gulf of Mexico on Saturday night. These winds will diminish into early next week, as a cold front stalls near the Texas coast, from Sunday through Monday night. CARIBBEAN SEA... A stationary front passes through 22N64W in the Atlantic Ocean, to 20N70W, to Haiti and its coastal sections near 19N73W. Precipitation: isolated moderate to locally strong is within 60 nm to the north/northwest of the stationary front between 70W and 73W. Broken to overcast low level clouds, and isolated moderate rainshowers, span the rest of the Caribbean Sea. The clouds and isolated moderate precipitation are moving with the surface-to-low level wind flow. A surface trough is along 11N73W in northern Colombia, through and beyond the Colombia/Panama border, into the eastern Pacific Ocean. Precipitation: isolated moderate is to the south of the surface trough, in Colombia. Please refer to the forecasts and the weather bulletins from your local meteorological offices for more details. The wind speeds and the sea heights will diminish across the region through Sunday, as high pressure to the north of the area weakens. Pulses of fresh to strong winds will persist through the Windward Passage and south of Hispaniola into early next week. ATLANTIC OCEAN... A cold front passes through 32N44W to 27N50W, and 23N60W, to 22N64W, to the western sections of Hispaniola. A dissipating cold front passes through 32N48W, to 30N50W, 29N60W, to 29N70W. Precipitation: Broken to overcast multilayered clouds, and isolated to widely scattered moderate rainshowers, are within 360 nm to the north and NW of the cold front/stationary front. Rainshowers are possible, from 20N northward between 35W and the cold front/stationary front. Broad surface anticyclonic wind flow covers the Atlantic Ocean to the N and NW of the dissipating cold front. A 1031 mb high pressure center near 35N20W. Surface anticyclonic wind flow covers the area that is from 23N northward from 40W eastward. The current stationary front, extending from 21N65W across the Dominican Republic to 19N73W, will weaken and dissipate through Friday. The winds and seas will diminish across the region through Sunday, as high pressure in the central Atlantic Ocean weakens. A cold front will move southward into the waters between Bermuda and northern Florida, on Saturday night and Sunday. A reinforcing cold front will move south of 30N on Monday. $$ mt/DM