000 AXNT20 KNHC 120603 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 205 AM EDT Wed Aug 12 2020 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 0540 UTC. ...SPECIAL FEATURES... The center of Tropical Depression ELEVEN, at 12/0300 UTC, is near 12.0N 41.5W. ELEVEN is moving westward, or 280 degrees, 12 knots. The estimated minimum central pressure is 1008 mb. The maximum sustained wind speeds are 30 knots with gusts to 40 knots. The westward motion of ELEVEN is expected to continue through Wednesday. A west-northwestward motion is forecast to begin on Wednesday night, and continue through the rest of the week. Some strengthening is forecast during the next 48 hours. The depression is expected to become a tropical storm by Wednesday night. Precipitation: widely scattered to scattered moderate and isolated strong is within 240 nm of the center in the NW quadrant; widely scattered moderate to isolated strong is from 07N to 10N between 42W and 51W. Please read the latest NHC Public Advisory at https://www.nhc.noaa.gov/text/MIATCPAT1.shtml and the Forecast/Advisory at https://www.nhc.noaa.gov/text/MIATCMAT1.shtml, for more details. ...TROPICAL WAVES... An Atlantic Ocean tropical wave is along 26W/27W from 19N southward, moving westward 10 to 15 knots. Precipitation: any nearby precipitation is related to the monsoon trough. An Atlantic Ocean tropical wave is along 58W/59W from 23N southward, moving westward 10 to 15 knots. Precipitation: widely scattered moderate to isolated strong is within 210 nm to the east of the tropical wave from 20N to 26N, and within 270 nm to the west of the tropical wave from 16N to 21N. A Caribbean Sea tropical wave is along 78W/79W from 20N southward, moving westward 10 knots. The wave is moving through the western parts of the upper level trough, that extends from SE Cuba to the Peninsula de la Guajira of northern Colombia. Precipitation: isolated moderate to locally strong in clusters covers the area from Haiti to Jamaica to the Caribbean Sea coast of Cuba. ...MONSOON TROUGH/ITCZ... The monsoon trough passes through the coastal areas of Senegal near 16N16W, to 12N23W and 12N33W. The ITCZ is along 06N/07N from 46W to 56W. Precipitation: widely scattered to scattered moderate and isolated strong is within 400 nm to the south of the monsoon trough from the 26W/27W tropical wave eastward. Isolated moderate is elsewhere from 04N to 10N between 30W and 40W, and within 120 nm to the south of the ITCZ between 43W and 50W. GULF OF MEXICO... Broad upper level cyclonic wind flow spans the entire area. An upper level cyclonic circulation center is in the central Gulf. Precipitation: isolated moderate to locally strong is to the NE of the line that runs from SE Louisiana to SW Florida, to the S of 24N from 90W westward. Isolated moderate is elsewhere from 94W eastward. Broad surface anticyclonic wind flow spans the entire area. A broad ridge extends from the east central Gulf, toward the central Gulf, toward the SW corner of the area. High pressure across the northern Gulf of Mexico will support gentle to moderate winds and slight seas across the basin. Fresh to locally strong winds are possible each night in the eastern Bay of Campeche near the Yucatan Peninsula due to local effects. CARIBBEAN SEA... A Caribbean Sea tropical wave is along 78W/79W from 20N southward, moving westward 10 knots. The wave is moving through the western parts of the upper level trough, that extends from SE Cuba to the Peninsula de la Guajira of northern Colombia. Precipitation: isolated moderate to locally strong in clusters covers the area from Haiti to Jamaica to the Caribbean Sea coast of Cuba. The monsoon trough is along 09N/10N from 74W in Colombia beyond Costa Rica. Precipitation: isolated moderate covers the SW corner of the Caribbean Sea from 13N southward from 74W westward. Numerous strong is in Colombia from 04N to 08N between 73W and 77W; and in the eastern Pacific Ocean within 60 nm to the south of Panama and within 60 nm to the west of the 78W/79W tropical wave. Fresh to strong trade winds will prevail across the south central Caribbean Sea through Friday night. The comparatively strongest winds are expected near the coast of Colombia and in the Gulf of Venezuela during the nighttime hours on each night. Fresh winds will pulse for the next several nights through the Windward Passage. Tropical Depression ELEVEN near 12.0N 41.5W 1008 mb at 11 PM EDT moving W at 12 kt. Maximum sustained winds 30 kt gusts 40 kt. ELEVEN will move to 12.3N 43.4W Wed morning; strengthen to a tropical storm near 12.8N 45.9W Wed evening; 13.5N 48.3W Thu morning; 14.5N 50.8W Thu evening; 15.7N 53.3W Fri morning; and 17.0N 55.7W Fri evening. ELEVEN will change little in intensity as it moves to 19.5N 60.5W late Sat. ATLANTIC OCEAN... A surface trough extends from Great Abaco Island in the Bahamas, across the NW part of Andros Island, to the coast of Cuba near 22N79W. An upper level trough extends from Bermuda toward the SE half of Cuba. Precipitation: isolated moderate covers the Atlantic Ocean from 20N northward from 64W westward. Broad surface anticyclonic wind flow covers the Atlantic Ocean from 25N northward from 60W eastward. A persistent ridge, extending from the Atlantic Ocean into the Gulf of Mexico, will support gentle to moderate SE winds to the east of Florida through the weekend. Tropical Depression ELEVEN near 12.0N 41.5W 1008 mb at 11 PM EDT moving W at 12 kt. Maximum sustained winds 30 kt gusts 40 kt. ELEVEN will move to 12.3N 43.4W Wed morning, strengthen to a tropical storm near 12.8N 45.9W Wed evening, 13.5N 48.3W Thu morning; 14.5N 50.8W Thu evening; 15.7N 53.3W Fri morning; and 17.0N 55.7W Fri evening. ELEVEN will change little in intensity as it moves to 19.5N 60.5W late Sat. $$ mt