000 AXNT20 KNHC 030557 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 205 AM EDT Thu Sep 03 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... Hurricane NANA is expected to make landfall along the coast of Belize during the overnight hours. The center of Hurricane Nana, at 03/0300 UTC, is near 17.0N 87.5W. NANA is about 52 nm/95 km to the SE of Belize City in Belize, and about 70 nm/130 km to the NE of Monkey River Town in Belize. NANA is moving W, or 265 degrees, 14 knots. The estimated minimum central pressure is 994 mb. The maximum sustained wind speeds are 65 knots with gusts to 80 knots. Precipitation: Scattered to numerous strong is within 150 nm of the center in the SW semicircle. The strong precipitation is covering inland areas and coastal areas of Honduras and Belize, and in the Gulf of Honduras. Isolated to widely scattered moderate and isolated strong is elsewhere, from 12N to 223N between 86W and 93W. This precipitation covers inland areas and coastal waters from Nicaragua to the Yucatan Peninsula between Nicaragua and the Isthmus of Tehuantepec of southern Mexico. 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. The center of Tropical Depression Omar, at 03/0300 UTC, is near 36.1N 64.1W. OMAR is moving E, 090 degrees, 11 knots. The estimated minimum central pressure is 1005 mb. The maximum sustained wind speeds are 30 knots with gusts to 40 knots. Precipitation: scattered moderate to strong is within 80 nm to 210 nm of the center in the SE quadrant. OMAR is barely a tropical cyclone. OMAR is expected to become a remnant low pressure center on Thursday. Please read the latest NHC Public Advisory at https://www.nhc.noaa.gov/text/MIATCPAT5.shtml, and the Forecast/Advisory at https://www.nhc.noaa.gov/text/MIATCMAT5.shtml, for more details. ...TROPICAL WAVES... A tropical wave is along 21W, from 18N southward, moving westward 10 to 15 knots. The wave is expected to merge with a disturbance, that is centered a few hundred miles to the southeast of the Cabo Verde Islands, toward the end of the week. Gradual development of this system is possible. It is possible that a tropical depression may form during the weekend or early next week, while it moves westward in the eastern and central tropical Atlantic Ocean. Please, read the North Atlantic Tropical Weather Outlook for the latest updates. Precipitation: any nearby precipitation is in the monsoon trough. An Atlantic Ocean tropical wave is 39W/40W from 16N southward, moving W 10 to 15 knots. Precipitation: any nearby precipitation is in the monsoon trough. An Atlantic Ocean tropical wave is along 50W from 18N southward, moving W 10 to 15 knots. Precipitation: any nearby precipitation is in the monsoon trough. A tropical wave is along 60W from 20N southward, moving W 10 to 15 knots. Precipitation: isolated moderate is from 17N southward, in the water, between 54W and 60W. A Caribbean Sea tropical wave is along 75W from 19N southward, moving W 10 to 15 knots. Upper level cyclonic wind flow is about 570 nm to the NNE of Hurricane Nana. Upper level cyclonic wind flow covers parts of the NW corner of the Caribbean Sea, and parts of the SE Gulf of Mexico. Precipitation: isolated moderate is present, in the area of upper level cyclonic wind flow. ...MONSOON TROUGH/ITCZ... The monsoon trough passes through the southern coastal sections of Mauritania, to 12N22W, and then from 12N to 13N between 22W and 54W. The ITCZ continues from 13N to 15N between 54W and 62W. Precipitation: isolated to widely scattered moderate and isolated strong is from 03N to 17N between 08W and 46W. GULF OF MEXICO... Upper level cyclonic wind flow is about 570 nm to the NNE of Hurricane Nana, covering parts of the Gulf of Mexico. Precipitation: isolated moderate covers the Gulf of Mexico from 90W eastward. A stationary front currently is in interior sections of Texas. Precipitation: broken to overcast multilayered clouds and isolated to widely scattered moderate covers the Gulf of Mexico from 25N northward from 93W westward. A surface ridge passes through north central Florida, to a 1016 mb high pressure center that is near 28N87W. The ridge continues southwestward, to the coast of Mexico along 21N. High pressure in the eastern Gulf of Mexico will support moderate to fresh southerly winds in the western Gulf of Mexico, and light to gentle breezes in the eastern Gulf of Mexico, through tonight. The high pressure will move to the north of the area on Thursday, in advance of a trough that will be entering the eastern Gulf of Mexico. The trough will dissipate in the central Gulf of Mexico by Friday. A weak front will stall in the northern Gulf of Mexico on Saturday, and dissipate through late Sunday. CARIBBEAN SEA... Upper level cyclonic wind flow covers parts of the Caribbean Sea, and parts of the Atlantic Ocean, between 50W and 74W. Precipitation: isolated to widely scattered moderate and isolated strong is in the area of the upper level cyclonic wind flow. Precipitation: isolated to widely scattered moderate and isolated strong covers the Caribbean Sea to the north of the line that runs from 11N75W to the NE corner of the Yucatan Peninsula. The monsoon trough is along 11N/12N between 73W in Colombia and NW Costa Rica. Precipitation: isolated moderate to locally strong is from 13N southward from 72W westward, in the SW corner of the Caribbean Sea. Hurricane Nana near 17.0N 87.5W 994 mb at 11 PM EDT moving W at 14 kt. Maximum sustained winds 65 kt gusts 80 kt. Nana will move inland during the early morning in Belize, then weaken to a tropical storm near 16.8N 89.2W. Nana will weaken to a tropical depression as it continues to move inland, reaching near 16.4N 91.6W Thu evening, before eventually dissipating in Chiapas in southern Mexico by Fri evening. Moderate to fresh trade winds will persist in the central Caribbean Sea, in the wake of Nana, through Sunday. Expect gentle to moderate breezes elsewhere. ATLANTIC OCEAN... Upper level cyclonic wind flow covers parts of the Atlantic Ocean, and parts of the Caribbean Sea, between 50W and 74W. Precipitation: isolated to widely scattered moderate and isolated strong is in the area of the upper level cyclonic wind flow. Broad surface anticyclonic wind flow covers the Atlantic Ocean from 20N northward from 80W westward. A surface ridge extends from a 1020 mb high pressure center that is near 32N48W, through 29N60W, beyond north central Florida, to a Gulf of Mexico 1016 mb high pressure center that is near 28N87W. A ridge extends east to west along 29N. This is supporting moderate to fresh E winds south of 22N, with pulses of fresh to strong winds possible to the north of Hispaniola and near the Windward Passage tonight. The pattern will support gentle to moderate winds north of 22N. Little change is expected for several days. $$ mt