000 AXNT20 KNHC 230005 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 805 PM EDT Sun Apr 22 2018 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 1800 UTC surface analysis and satellite imagery through 2300 UTC. ...MONSOON TROUGH/ITCZ... The monsoon trough passes through the coastal sections of Guinea near 10N14W, to 05N19W. The ITCZ continues from 05N19W, 01N23W, to the Equator along 30W, to 01N40W, 03N44W, and to the coast of Brazil near 04N51W. Precipitation: isolated moderate to locally strong rainshowers are from 10N. ...DISCUSSION... GULF OF MEXICO... A cold front is moving through the western half of the Gulf of Mexico, passing through SE Louisiana to NE Mexico. A warm front, that is part of the same frontal boundary and connected to the same 1011 mb Mississippi low pressure center, passes through the Florida Panhandle, across the NE part of the Gulf of Mexico, beyond South Florida and Lake Okeechobee. Precipitation: widely scattered moderate to isolated moderate rainshowers cover the area that is from 24N northward from 90W eastward, including in parts of South Florida. The current cold front is moving through the western half of the Gulf of Mexico, passing through SE Louisiana to NE Mexico. This front is preceded by a pre-frontal squall line affecting mainly the waters N of 28N and E of the front. The cold front is expected to reach from the Florida Panhandle to NE Mexico near 24N98W by Mon morning, from near Tampa Bay to Tampico, Mexico by Tue morning, and reach the Straits of Florida and the SE Gulf by Wed morning while moving slowly across the SW Gulf. CARIBBEAN SEA... Atlantic Ocean high pressure will maintain fresh-to-locally strong trade winds near the coast of Colombia through Tuesday. Fresh-to-locally strong winds also are expected along the southern coast of Hispaniola tonight through Monday morning. A weakening cold front will move southeastward across the Yucatan Basin on Tuesday night, and wash out across the NW Caribbean Sea by Wednesday. ATLANTIC OCEAN... The current Atlantic Ocean stationary front extends westward from 27N65W to south central Florida. The frontal boundary will lift northward tonight with near gale force southeast flow developing across the forecast waters north of the Bahamas on Mon and Mon night in association with a surface low that will move eastward across the southeastern United States. The surface low will track northeastward along the Georgia and South Carolina coasts on Tue, and drag a couple of weak cold fronts across the northwest waters during the middle of next week. For additional information please visit http://www.hurricanes.gov/marine $$ MT