000 AXNT20 KNHC 230605 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 205 AM EDT Thu Mar 23 2017 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 0515 UTC. ...SPECIAL FEATURES... Please refer to the METEO-FRANCE High Seas Forecast, that is listed on the website: WWW.METEOFRANCE.COM/PREVISIONS-METEO- MARINE/BULLETIN/GRANDLARGE/METAREA2. Gale-force winds are forecast for the area that is called: AGADIR, for the AREA FORECASTS that are valid until 24/0000 UTC. ...ITCZ/MONSOON TROUGH... The Monsoon Trough passes through the coastal sections of Sierra Leone 07N11W, to 05N15W and 02N20W. The ITCZ continues from 02N20W to the Equator along 27W, to 01S31W and 04S37W. Convective precipitation: scattered strong from 04N to 06N between 14W and 17W, and from 02N southward between 17W and 21W. widely scattered moderate to isolated strong from 04N southward between 21W and 31W. ...DISCUSSION... ...THE GULF OF MEXICO... Middle level to upper level NW wind flow is moving across the open waters of the Gulf of Mexico. Comparatively drier air in subsidence also is present in water vapor imagery, in the entire area. A cold front passes through 32N69W in the Atlantic Ocean, to 30N74W, 28N79W, to the Florida east coast near 29N81W and to 30N82W in Florida. The front becomes stationary, and it continues from 30N82W, through the Florida Panhandle, and beyond SE Louisiana. Surface anticyclonic wind flow spans the Gulf of Mexico. A 1021 mb high pressure center is near 28N92W. ...LOW LEVEL CLOUD CEILINGS AND WEATHER FOR THE OFFSHORE OIL PLATFORM SITES THAT ARE IN THE AREA WHOSE BOUNDARIES ARE FROM 27N NORTHWARD AND FROM 88W WESTWARD... LIFR: none. IFR: none. MVFR: KGBK and KVOA. LOW LEVEL CLOUD CEILINGS AND WEATHER...FOR THE COASTAL PLAINS OF THE U.S.A. FROM THE DEEP SOUTH OF TEXAS TO FLORIDA... TEXAS: MVFR in McAllen and Bay City. LIFR in Beaumont/Port Arthur. LOUISIANA: IFR in Patterson. from MISSISSIPPI to ALABAMA: VFR. FLORIDA: MVFR in Brooksville. IFR at the Tampa Executive Airport. MVFR everywhere in the Tampa/St. Petersburg metropolitan area, and in Sarasota. ...FROM THE ATLANTIC OCEAN INTO THE CARIBBEAN SEA...INCLUDING THE REST OF THE CARIBBEAN SEA... An upper level trough passes through 32N74W in the western Atlantic Ocean, across the Bahamas and Cuba, to 18N82W in the NW corner of the Caribbean Sea. Upper level SW wind flow is to the east of the line that runs from the Windward Passage to NE coastal Nicaragua. Upper level cyclonic wind flow covers the Caribbean Sea to the west of the same Windward Passage-to-NE Nicaragua line. Rainshowers are possible to the N, NE, and E of the line that runs from 16N70W 15N64W 11N65W, and then to the N, NW, and W of the line that runs from 17N70W to 14N76W to 09N80W. This precipitation is possible in scattered to broken low level clouds. The 24-hour rainfall total in inches for the period ending at 23/0000 UTC...according to the PAN AMERICAN TEMPERATURE AND PRECIPITATION TABLES...MIATPTPAN/SXCA01 KNHC...is 0.01 in Guadeloupe. ...HISPANIOLA... SW wind flow at all levels is moving across the island. Rainshowers are possible inland, and in the coastal waters. SURFACE OBSERVATIONS...for Port-au-Prince in Haiti: VFR. for the DOMINICAN REPUBLIC: Barahona: VFR. few cumulonimbus clouds. Santo Domingo/La Romana: VFR. Punta Cana: light rain. MVFR. ceiling 1400 feet. Santiago and Puerto Plata: MVFR. ceiling 1600 feet. The GFS MODEL forecasts for 250 MB and for 500 mb show that SW wind flow will move across the area during the next 48 hours. A trough will be approaching Hispaniola at the end of the 48-hour forecast time period. The GFS MODEL forecast for 700 mb shows that the first half of day one will consist of SW wind flow, and that the second half of day one will consist of cyclonic wind flow and the trough across the area. Expect cyclonic wind flow across the area during all of day two. ...THE ATLANTIC OCEAN... A cold front passes through 32N69W in the Atlantic Ocean, to 30N74W, 28N79W, to the Florida east coast near 29N81W and to 30N82W in Florida. The front becomes stationary, and it continues from 30N82W, through the Florida Panhandle, and beyond SE Louisiana. Surface anticyclonic wind flow is to the east and to the west of the 32N46W 28N53W stationary front / 28N53W 27N64W 22N73W warm front. A surface ridge passes through 32N37W 28N44W 25N51W to 19N65W. For additional information please visit http://www.hurricanes.gov/marine $$ MT