000 AXNT20 KNHC 031759 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 1805 UTC Mon Apr 3 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 1200 UTC surface analysis and satellite imagery through 1720 UTC. ...SPECIAL FEATURES... Caribbean Sea Gale-Force Wind Warning: The surface pressure gradient, that is between high pressure that is to the north of the Caribbean Sea, and relatively lower surface pressure that is in northern Colombia, will support pulsing winds to gale-force tonight near the coast of Colombia in particular, and fresh to near gale-force winds in the central sections and in parts of the SW Caribbean Sea in general, through Thursday night. The sea heights will range from 10 feet to 12 feet in the areas of the comparatively fastest wind speeds. Atlantic Ocean Significant Swell Event: Fresh to strong NE winds, and sea heights that in general are 8 feet or higher, are between 20W and 60W to the north of the line 10N60W 12N53W 18N35W 20N26W 20N20W. The sea heights are ranging from 10 feet to 14 feet from 20N northward between 30W and 42W. The sea heights will range from 8 feet to 11 feet on Tuesday morning, and they will range from 8 feet to 10 feet on Wednesday morning. A stationary front is along 31N21W 29N30W 27N40W 26N45W. This event, with a leading- edge period that ranges from 11 seconds to 15 seconds, will continue to spread southeastward today. Precipitation: isolated moderate to locally strong is elsewhere from 10N northward from 60W eastward. Please, read the latest High Seas Forecast, at https://www.nhc.noaa.gov/text/MIAHSFAT2.shtml, for more details. ...MONSOON TROUGH/ITCZ... The monsoon trough passes through the coastal plains border area of Sierra Leone and Liberia, to 04N20W, 01N30W, and 01N35W. The ITCZ continues from 01N35W, to 01N42W, crossing the Equator along 45W, to the coast of Brazil near 01S46W. Precipitation: widely scattered moderate to isolated strong is from 06N southward. ...GULF OF MEXICO... Broad surface anticyclonic wind flow spans the Gulf of Mexico. A warm front passes through N Louisiana, central Mississippi, southern Alabama, to SW Georgia near the Florida Panhandle. Precipitation: widely scattered moderate to isolated strong is from 27N northward between 75W and 85W, including in parts of Florida and Georgia, and in the Atlantic Ocean. Fresh to strong SE winds are between 87W and 95W. Moderate to fresh winds are elsewhere from 90W westward. Moderate or slower wind speeds are from 90W eastward. The sea heights in general are ranging from 3 feet to 5 feet. Fresh to strong winds are expected to pulse at night off the Yucatan Peninsula through Fri. High pressure and fresh to locally strong return flow will prevail across most of the western half of the Gulf tonight through Wed, ahead of the next cold front. The front is expected to move into the NW Gulf Wed, and stall across NW and W portions, where it will meander through Fri. ...CARIBBEAN SEA... A warning for GALE-FORCE winds is in effect for the offshore waters of Colombia. Please, read the Special Features section for more details. The sea heights are ranging from 7 feet to 10 feet within 390 nm to the north of the coast of Colombia, in the central one-third of the area, and from 3 feet to 5 feet elsewhere between 70W and 80W. The sea heights are ranging from 5 feet to 7 feet in the eastern one-third of the area, and from 4 feet to 6 feet elsewhere. Strong to near gale-force NE winds have been within 330 nm to the north of Colombia during the last 12 hours. Fresh to strong NE winds are elsewhere in the eastern two-thirds of the area. Moderate to fresh winds are from 80W westward, and in the remainder of the Caribbean Sea. The pressure gradient between surface ridging associated with strong high pressure centered SW of the Azores Islands, and low pressure over NW Colombia will support fresh to near gale-force winds in the central and portions of the SW Caribbean through Thu night. Winds near the coast of Colombia will pulse to gale- force tonight and Tue night. Fresh to strong winds are expected to pulse in the Windward Passage and in the Gulf of Honduras through Thu. Moderate to fresh trades will continue in the E Caribbean through the end of the week. ...ATLANTIC OCEAN... Please, read the SPECIAL FEATURES section, for details about the ongoing significant swell event that is in the central and the eastern sections of the Atlantic Ocean. Mostly moderate to some fresh E to SE winds are from 22N northward between 48W and 60W. Moderate or slower wind speeds, and sea heights that range from 4 feet to 7 feet, are to the south of the line 10N60W 12N53W 18N35W 20N26W 20N20W. The sea heights are reaching 7 feet within 125 nm to the north of Puerto Rico between 64W and 67W. A cold front passes through 31N64W to 29N77W. The sea heights are ranging from 4 feet to 7 feet, and broad surface anticyclonic moderate or slower wind speeds, are from 60W westward. High pressure centered SW of the Azores Islands extends W-SW to the Bahamas and continues to support moderate to fresh E to SE winds S of 22N to the east of the approaches to the Windward Passage. Winds and seas to 10 ft in this region will diminish late Tue as Atlantic high pressure reorganizes N of the area. A cold front extending from 31N64W to 28N75W will continue to move SE and weaken through late Tue. Moderate to fresh winds across the waters N of 29N in advance and in the wake of this front will lift N of the area this afternoon. Fresh to strong winds will continue in the Great Bahama Bank and between Hispaniola and Turks and Caicos through Thu evening. Looking ahead, a broad inverted trough is expected to develop along about 55W Wed night and shift W through Fri. This feature will enhance winds/seas E of the Bahamas through the end of the week. $$ mt/era