000 AXNT20 KNHC 082350 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 750 PM EDT FRI JUL 8 2016 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 2315 UTC. ...TROPICAL WAVES... Tropical wave extends from 08N22W to 15N19W moving W at 15 kt. The wave coincides with 700 mb troughing between 19W-27W and a maximum in 850 mb relative vorticity along the wave axis near 08N. Isolated moderate convection is from 06N-12N between 18W-28W. Tropical wave extends from 07N40W to 14N46W moving W at 20 kt. The wave remains embedded within the ITCZ and coincides with 700 mb troughing evident in model fields between 42W-53W. Isolated moderate convection is from 08N-13N between 45W-52W. Tropical wave extends from 10N68W to 17N65W moving W at 20 kt. The wave coincides with 700 mb troughing between 62W-70W with 850 mb relative vorticity focused SE of Puerto Rico near 17N65W. No significant deep convection is associated with the wave at this time. Tropical wave extends from 06N85W to 14N84W moving W at 15 kt. This wave continues to move within the southern periphery of a mid-level ridge anchored over western Cuba near 23N85W. Scattered moderate and isolated strong convection is from 07N-16N between 80W-89W. ...ITCZ/MONSOON TROUGH... The Monsoon Trough extends from 10N19W to 08N23W to 08N36W. The Intertropical Convergence Zone axis extends from 08N36W to 08N46W. Aside from convection associated with the tropical waves...no significant convection is occurring at this time. ...DISCUSSION... GULF OF MEXICO... Relatively tranquil conditions continue this evening across the basin as a 1021 mb high is centered across the NE Gulf near 28N85W. However...an upper level low is centered near 26N86W and is providing enough middle to upper level lift to support isolated showers and tstms across the central and north-central Gulf waters N of 23N between 85W-93W. This convection will likely diminish through the late evening and early overnight hours. Otherwise... primarily gentle to moderate S-SE winds persist and are expected through the upcoming weekend with very little change. CARIBBEAN SEA... The pressure gradient between ridging across the SW North Atlc and lower pressure across northern Colombia supports fresh to locally strong trades across the majority of the central and SW Caribbean this evening. Generally moderate to fresh trades prevail elsewhere. Otherwise...the basin is mainly void of convection...except for scattered showers and tstms occurring across the SW Caribbean and portions of Central America in association with a tropical wave along 85W. This overall synoptic pattern is expected to persist through the weekend into early next week. ...HISPANIOLA... Isolated showers occurring across the island this evening continue to dissipate and mostly fair conditions and skies are expected through the overnight period into Saturday. Water vapor imagery indicates a drier air mass to the east moving westward that will promote clear skies and a low probability of precipitation during the weekend. ATLANTIC OCEAN... A broad surface ridge axis extends along 27N from 47W to the southern Florida peninsula. Mostly clear skies and fair conditions prevail with the exception of scattered cloudiness and possible isolated showers near the tail end of a dissipating cold front in the vicinity of 32N49W. The moisture remains N of 27N between 46W-54W. Farther east...the surface ridge dominates the eastern Atlc anchored on a 1026 mb high centered S of the Azores near 34N26W. Mostly tranquil conditions are expected to persist with the broad surface ridging the next few days. For additional information please visit http://www.hurricanes.gov/marine $$ HUFFMAN