000 AXNT20 KNHC 081751 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 151 PM EDT Fri Sep 8 2017 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 1200 UTC surface analysis and satellite imagery through 1615 UTC. ...SPECIAL FEATURES... At 08/1800 UTC, the center of Hurricane Irma is near 22.0N 76.0W. Irma is moving W, or 270 degrees, at 12 knots. The estimated minimum central pressure is 925 mb. The maximum sustained wind speeds are 135 kt with gusts to 165 kt. Numerous strong convection was noted within 120 nm of the center of Irma. Widely scattered moderate to isolated strong convection was noted elsewhere from 18N to 25N between 72W and 79W. Please read the latest NHC Intermediate Public Advisory under AWIPS/WMO headers MIATCPAT1/WTNT31 KNHC and, the Forecast/ Advisory under AWIPS/WMO headers MIATCMAT1/WTNT21 KNHC for more details. At 08/1800 UTC, the center of Hurricane Jose is near 16.4N 57.7W. Jose is moving WNW, or 285 degrees, at 16 knots. The estimated minimum central pressure is 940 mb. The maximum sustained wind speeds are 130 kt with gusts to 160 kt. Numerous strong convection was noted within 75 nm of the center of Jose. Scattered moderate to isolated strong was noted elsewhere from 14N to 20N between 52W and 59W. Please read the latest NHC Intermediate Public Advisory under AWIPS/WMO headers MIATCPAT2/WTNT32 KNHC and, the Forecast/Advisory under AWIPS/WMO headers MIATCMAT2/WTNT22 KNHC for more details. At 08/1800 UTC, the center of Hurricane Katia is near 21.1N 96.2W. Katia is moving W, or 260 degrees, at 4 knots. The estimated minimum central pressure is 974 mb. The maximum sustained wind speeds are 90 kt with gusts to 110 kt. Numerous strong convection was noted within 60 nm of the center of Katia. Scattered moderate to isolated strong convection was noted elsewhere from 19N to 24N between 94W and 98W. Please read the latest NHC Intermediate Public Advisory under AWIPS/WMO headers MIATCPAT3/WTNT33 KNHC and, the Forecast/Advisory under AWIPS/WMO headers MIATCMAT3/WTNT23 KNHC for more details. ...TROPICAL WAVES... The axis of a tropical wave is near 41W, from 05N to 21N, moving westward at 10 to 15 knots. Scattered moderate isolated strong convection is noted from 11N to 15N between 38W and 43W. ...ITCZ/MONSOON TROUGH... The monsoon trough passes through the coast of Africa near 13N17W to 09N44W. Scattered moderate convection was noted from 06N to 09N between 17W and 31W. ...DISCUSSION... ...THE GULF OF MEXICO... Please see above in the SPECIAL FEATURES for more on Hurricane Katia, located over the southwest Gulf. Outside the influence of Katia, moderate to fresh winds prevail, with seas in the 1-3 ft range over the eastern Gulf and 4-6 ft range over the western Gulf. The stationary front over the northeast Gulf has dissipated. ...THE CARIBBEAN SEA... Hurricane Irma is moving north of the area just north of eastern Cuba. Heavy rainfall is affecting eastern Cuba and the coastal waters south of the Island. Outside of the influence of Irma, moderate winds prevail over the eastern Caribbean with light to gentle winds elsewhere. Seas are in the 4-5 ft range over the eastern Caribbean, and 1-3 ft over the western Caribbean. ...HISPANIOLA... The center of Hurricane Irma is just north of eastern Cuba. Active convection continues across the western part of Hispaniola, where winds are just shy of tropical storm strength. Conditions will improve through the day as Irma moves further from the area. ...THE ATLANTIC OCEAN... Please see the SPECIAL FEATURES section above for information about Hurricane Irma, and Hurricane Jose. Outside the influence of Hurricane Irma and Hurricane Jose, gentle to moderate winds with seas in the 5-7 ft range prevail. Seas over the southwest north Atlantic waters are in the 9-13 fr range as a result of swell generated by Hurricane Irma. For additional information please visit http://www.hurricanes.gov/marine $$ AL