000 AXNT20 KNHC 060504 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 1204 AM EST Mon Feb 6 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 0430 UTC. ...SPECIAL FEATURES... Strong E-NE winds in the south-central Caribbean Sea near the coast of Colombia are reaching minimal gale force tonight and are forecast through 06/1200 UTC. This area will see pulsing of the wind field to minimal gale force each late night into the early morning hours through Wednesday. See latest NWS High Seas Forecast under AWIPS/WMO headers MIAHSFAT2/FZNT02 KNHC for more details. ...ITCZ/MONSOON TROUGH... The Monsoon Trough extends from the African coast near 10N14W to 10N17W. The Intertropical Convergence Zone extends from 02N20W to the Equator near 38W. Widely scattered moderate convection is S of 04N between 13W-45W. ...DISCUSSION... GULF OF MEXICO... Tranquil conditions prevail across the Gulf this evening as the southern periphery of a surface ridge anchored by a 1023 mb high centered across southern Georgia influences much of the basin. Generally fair skies are noted on shortwave infrared satellite imagery with gentle to moderate anticyclonic winds occurring E of 90W and moderate E-SE winds occurring W of 90W. The ridging will shift eastward into the SW North Atlc by Monday night as gentle to moderate E-SE winds are expected to veer more southerly into Tuesday. The next cold front is forecast to emerge off the Texas and Louisiana coasts early Thursday morning. CARIBBEAN SEA... Aside from the near gale to gale force winds occurring across a portion of the SW Caribbean...the remainder of the basin is expected to remain relatively tranquil overnight into Monday as mostly dry air and subsidence prevails aloft as noted on water vapor imagery. Only a few isolated showers are possible across the Lesser Antilles and portions of the SW Caribbean waters S of 12N between 77W-83W. Otherwise...moderate to fresh trades prevail with little change expected through Tuesday. ...HISPANIOLA... Isolated showers in moderate to occasional fresh trade wind flow will continue to affect the island through Monday. Conditions are expected to remain stable overall as dry air and strong subsidence prevails aloft. ATLANTIC OCEAN... Primarily zonal middle to upper level flow prevails over the SW North Atlc region this evening...while water vapor imagery indicates subtle mid-level shortwave troughing N of the discussion area in the vicinity of 39N64W. This troughing supports a cold front extending through 32N74W SW to the Florida peninsula near 28N80W. Isolated showers and tstms are occurring generally N of 29N between 69W and the front. Farther east... another cold front extends from 32N38W SW to 27N50W then begins to weaken and become diffuse to 24N65W. Isolated showers are possible within 120 nm either side of the front. Otherwise...the remainder of the central and eastern Atlc is under the influence of a surface ridge anchored by a 1028 mb high centered near 34N54W and another surface ridge anchored by a 1033 mb high centered SW of the Iberian peninsula near 36N11W. For additional information please visit http://www.hurricanes.gov/marine $$ HUFFMAN