000 AXNT20 KNHC 140522 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 0605 UTC Mon Sep 14 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 0515 UTC. ...SPECIAL FEATURES... ...T.S. SALLY... Tropical Storm Sally is centered near 28.2N 86.2W at 14/0300 UTC or 122 nm SSW of Panama City Florida moving NW at 7 kt. Estimated minimum central pressure is 996 mb. Maximum sustained wind speed is 50 kt with gusts to 60 kt. Scattered to numerous moderate convection is noted from 26N-30N between 82W-88W. A slower west-northwestward motion is expected Monday and Monday night, followed by a further decrease in forward speed and a turn to the northwest Monday night and Tuesday. On the forecast track, the center of Sally will move over the north-central Gulf of Mexico on Monday, and approach the northern Gulf Coast within the hurricane warning area on Tuesday. Sally is expected to move slowly northward near the northern Gulf Coast through Wednesday. Please read the latest NHC Public Advisory at https://www.nhc.noaa.gov/text/MIATCPAT4.shtml and Forecast/Advisory at https://www.nhc.noaa.gov/text/MIATCMAT4.shtml for more details. ...HURRICANE PAULETTE... Hurricane Paulette is centered near 31.4N 64.0W at 14/0300 UTC or 70 nm SE of Bermuda moving NW at 11 kt. Estimated minimum central pressure is 976 mb. Maximum sustained wind speed is 75 kt with gusts to 90 kt. Scattered to numerous moderate convection is noted from 28N-34N between 61W-66W. Paulette is forecast to continue moving northwestward overnight and then turn northward on Monday while strengthening. A faster motion toward the northeast is expected late Monday through Wednesday. On the forecast track the eye of Paulette will move near or over Bermuda early Monday morning. Additional strengthening is likely when Paulette turns northeastward and moves away from Bermuda late Monday through Tuesday. Please read the latest NHC Public Advisory at https://www.nhc.noaa.gov/text/MIATCPAT2.shtml and Forecast/Advisory at https://www.nhc.noaa.gov/text/MIATCMAT2.shtml for more details. ...T.D. RENE... Tropical Depression Rene is centered near 27.2N 47.9W at 14/0300 UTC or 980 nm NE of the Leeward Islands moving W at 2 kt. Estimated minimum central pressure is 1011 mb. Maximum sustained wind speed is 25 kt with gusts to 35 kt. Scattered moderate convection is noted within 60 nm eastern semicircle. Rene is forecast to continue weakening and become a remnant low on Monday. Please read the latest NHC Public Advisory at https://www.nhc.noaa.gov/text/MIATCPAT3.shtml and Forecast/ Advisory at https://www.nhc.noaa.gov/text/MIATCMAT3.shtml for more details. ...T.D. TWENTY... Tropical Depression Twenty is centered near 12.7N 37.6W at 14/0300 UTC or 890 nm W of the Cabo Verde Islands moving WNW at 13 kt. Estimated minimum central pressure is 1006 mb. Maximum sustained wind speed is 30 kt with gusts to 40 kt. Scattered moderate convection is noted from 08N-15N between 39W-46W. A motion to the west-northwest is expected to continue through mid-week. Strengthening is expected, and the system is forecast to become a hurricane in a couple of days. Please read the latest NHC Public Advisory at https://www.nhc.noaa.gov/text/MIATCPAT5.shtml and Forecast/ Advisory at https://www.nhc.noaa.gov/text/MIATCMAT5.shtml for more details. ...EASTERN ATLANTIC LOW PRESSURE... A 1009 mb low is located near 17N29W. Scattered moderate convection is from 13N-17N between 24W-32W. Satellite-derived wind data continues to indicate that the circulation associated with this area of low pressure remains elongated. However, environmental conditions are conducive for a short-lived tropical depression to form over the next day or so while the low moves north-northwestward at 5 to 10 kt. This system has a high chance of tropical cyclone formation during the next 48 hours. Please refer to the latest Tropical Weather Outlook at www.nhc.noaa.gov/gtwo.php?basin=atlc&fdays=2 for more details. ...MONSOON TROUGH/ITCZ... The monsoon trough extends from the coast of Africa near 19N16W to the 1009 mb low near 17N29W to 15N34W. Aside from the convection mentioned above in the Special Features section, scattered showers are noted along the remainder of the boundary. GULF OF MEXICO... Tropical Storm Sally, located over the eastern Gulf of Mexico, is currently producing seas to near 17 ft near its center. Sally is expected to strengthens to a hurricane over the north central Gulf of Mexico today. Please see the Special Features section above for more details. Elsewhere, a 1008 mb low near 24N94W is along a surface trough that extends from 24N96W to 25N93W. Scattered showers are noted west of 92W. Outside of Sally, gentle to moderate winds prevail. Outside of Tropical Storm Sally, the surface trough and low over the western Gulf of Mexico will move south and southwest through the middle of next week with low chance of tropical cyclone formation. CARIBBEAN SEA... The eastern extension of the EPAC's monsoon trough is producing scattered moderate convection over the SW Caribbean south of 14N. This activity is enhanced by an upper-level low over the SW Caribbean. Scatterometer data depicts Gentle to moderate winds prevail across the basin. Moderate trade winds will prevail in the central and eastern Caribbean through late Tue. Surface ridging will establish over the SW Atlantic waters by mid-week, resulting in moderate to fresh trades in the central and eastern Caribbean. Moderate southeast winds are expected to continue in the NW basin through Tue. ATLANTIC OCEAN... Please see the Special Features section above for more details on Hurricane Paulette, Tropical Depression Rene, Tropical Depression Twenty, and low pressure west of the Cabo Verde Islands. Swells produced by Paulette are affecting portions of the Leeward Islands, the Greater Antilles, the Bahamas, Bermuda, and the east coast of the United States. These swells could cause life-threatening surf and rip current conditions. Elsewhere, scattered gusty showers are currently noted within 120 nm of the east coast of Florida. This activity is associated with the outermost rains of Tropical Storm Sally, which is located over the eastern Gulf of Mexico. Outside of the tropical systems, gentle to moderate winds prevail. Hurricane Paulette will move N of the area Mon morning. Tropical Depression Twenty will strengthen to a tropical storm near 13.5N 41.2W Mon morning, move to 13.9N 43.7W Mon evening, 14.4N 45.9W Tue morning, strengthen to a hurricane near 15.0N 47.3W Tue evening, 16.0N 48.7W Wed morning, and 17.2N 50.0W Wed evening. Twenty will change little in intensity as it moves near 20.0N 52.4W late Thu. Large swell associated with this system is forecast to affect the tropical Atlantic waters E of the Leeward Islands by the middle of the week. $$ ERA