000 AXNT20 KNHC 071204 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 804 AM EDT Thu Jun 7 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 0600 UTC surface analysis and satellite imagery through 1100 UTC. ...TROPICAL WAVES... An Atlantic Ocean tropical wave is along 25W/26W south of 13N, moving westward 10 to 15 knots. Precipitation: Scattered moderate rainshowers from 05N-10N between 21W-28W. An Atlantic Ocean tropical wave is along 48W/49W from 13N southward, moving westward 10 to 15 knots. A Caribbean Sea tropical wave is along 77W/78W, from Jamaica southward, moving westward 10 to 15 knots. No significant convective precipitation is apparent in satellite imagery due to Saharan dust. A tropical wave is moving through the Isthmus of Tehuantepec of southern Mexico, along 92W/93W, moving westward 10 knots. Precipitation: Scattered moderate convection is observed along the wave's axis mainly south of 19N. ...MONSOON TROUGH/ITCZ... The monsoon trough passes through SW Mauritania, to 10N20W and 08N23W. The ITCZ continues from 07N27W to 04N39W, and 05N46W. Precipitation: scattered rainshowers are along the ITCZ between 27W and 30W. ...DISCUSSION... GULF OF MEXICO... A stationary front extends across the northeastern portion of the basin from 29N94W to 28N83W. Scattered showers cover the eastern Gulf waters in the vicinity of the front mainly east of 83W. Another area of scattered showers is noted over the Straits of Florida. THe tropical wave moving over the Yucatan Peninsula is enhancing convection inland mainly south of 18N. An upper-level trough extends from the NE corner of the basin along 87W-88W reaching the northern coast of the Yucatan Peninsula. The current stationary front from Tampa Florida to northeast Texas will dissipate later today. A surface trough will develop along the Yucatan Peninsula each evening, then drift westward in the the southwest Gulf at night. CARIBBEAN SEA... An upper-level trough extends from the NE corner of the Gulf of Mexico into the Yucatan Peninsula. Broad upper-level anticyclonic wind flow spans the rest of the Caribbean, to the east of the trough. Scattered showers are noted over the western half of the basin mainly west of 73W. The monsoon trough is along 10N from NW Colombia westward, beyond NW Costa Rica. At this time, scattered showers are along this boundary affecting Panama and Costa Rica. Fresh to strong trade winds will persist in the central Caribbean Sea. The wind speeds will reach near-gale force, mainly at night, near Colombia and Venezuela through Sunday. Fresh to strong winds are expected in the Gulf of Honduras through Saturday night. Moderate to fresh trade winds will prevail elsewhere through early next week. ATLANTIC OCEAN... A stationary front extends across the west Atlantic from 28N80W to 31N72W. Abundant moisture is streaming northeastward, on the eastern side of the NE Gulf of Mexico-to-Yucatan Peninsula upper level trough. With these, scattered moderate convection is observed over the northern Bahamas mainly south of the front. The remainder of the basin is under the influence of a surface ridge, anchored by a 1026 mb high centered near 32N24W. The current stationary front will dissipate later today. A surface ridge, that is along 23N, will drift northward to 28N by late Friday, and persist into early next week. For additional information please visit http://www.hurricanes.gov/marine $$ MT