000 AXNT20 KNHC 081147 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 805 AM 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 0600 UTC surface analysis and satellite imagery through 1015 UTC. ...SPECIAL FEATURES... The center of Hurricane Irma, at 08/1200 UTC is near 21.8N 74.7W. Irma is moving WNW, 285 degrees, 14 knots. The estimated minimum central pressure is 927 mb. The maximum sustained wind speeds are 130 kt with gusts to 160 kt. Convective precipitation: numerous strong within 150 nm of the center in the SE semicircle, and within 90 nm of the center in the NW semicircle. Widely scattered moderate to isolated strong elsewhere from 18N to 26N between 68W and 78W. 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. The center of Hurricane Jose, at 08/1200 UTC is near 16.1N 56.2W. Jose is moving WNW, 285 degrees, 14 knots. The estimated minimum central pressure is 957 mb. The maximum sustained wind speeds are 110 kt with gusts to 135 kt. Convective precipitation: numerous strong within 120 nm of the center in the E semicircle, and within 60 nm of the center in the W semicircle. widely scattered moderate to isolated strong from 22N to 25N between 53W and 59W. isolated moderate to locally strong elsewhere from 12N to 24N between 47W and 60W. 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. The center of Hurricane Katia, at 08/0900 UTC, is in the SW corner of the Gulf of Mexico near 21.3N 95.4W, or about 140 nm NNE of Veracruz in Mexico, or 155 nm ESE of Tampico, Mexico. Katia is moving WSW, 250 degrees, 3 knots. The estimated minimum central pressure is 977 mb. The maximum sustained wind speeds are 80 kt with gusts to 100 kt. Convective precipitation: numerous strong within 90 nm to 120 nm of the center in the NW semicircle, and within 60 nm of the center in the SE semicircle. isolated moderate to locally strong elsewhere from 24N southward, including in interior sections of Mexico and in the Gulf of Mexico, from 90W westward to the coastal plains of Mexico. 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... An Atlantic Ocean tropical wave is along 38W/40W from 15N southward, and moving westward 10 to 15 knots. Convective precipitation: isolated moderate to locally strong from 06N to 14N between 34W and 40W. ...ITCZ/MONSOON TROUGH... The monsoon trough passes through 14N17W at the coast of Senegal, to 12N20W, 10N30W, and to 08N38W. The ITCZ continues from 08N38W to 07N45W and 07N50W. Convective precipitation: scattered strong from 12N to 15N between Africa and 18W. scattered moderate to isolated strong from 05N to 08N between Africa and 30W. isolated moderate to locally strong elsewhere from 15N southward from 70W in the Caribbean Sea eastward to Africa. ...DISCUSSION... ...THE GULF OF MEXICO... Hurricane Katia is in the SW corner of the area. Please read the SPECIAL FEATURES section for more information. Upper level anticyclonic wind flow, and multilayered clouds and isolated moderate to locally strong convective precipitation are elsewhere in the area, away from Hurricane Katia, to the N of the line that runs from 24N98W to 26N90W to 28N83W, beyond 32N70W. A stationary front passes through 32N76W in the Atlantic Ocean, to the Florida east coast near 29N81W, to 27N90W and 25N94W. ...THE CARIBBEAN SEA... Hurricane Irma is passing through the SE part of the Bahamas at this moment. Irma is forecast to move along the northern coastal waters of Cuba through Saturday. Rainfall that is around the periphery of Irma's circulation is being observed across Hispaniola. An upper level cyclonic circulation center is near 19N83W, to the south of NW Cuba. Upper level cyclonic wind flow covers the area that is from 80W westward. The N central part of the Caribbean Sea is being affected by the circulation that encompasses Hurricane Irma. The monsoon trough is along 11N/12N from 73W beyond W Nicaragua. Convective precipitation: rainshowers are possible from 13N southward from 73W westward. ...HISPANIOLA... Hurricane Irma is passing through the SE part of the Bahamas at this moment. Hispaniola still is under the influence of Hurricane Irma, from the surface into the upper levels of the atmosphere. Rainshowers and thunderstorms span the island. ...THE ATLANTIC OCEAN... Please read the SPECIAL FEATURES section, for information about Hurricane Irma, and Hurricane Jose. Upper level SW wind flow, and isolated moderate to locally strong convective precipitation, are to the NW of the line 26N80W beyond 32N67W. A stationary front passes through 32N76W in the Atlantic Ocean, to the Florida east coast near 29N81W. An upper level trough passes through a 33N39W cyclonic circulation center, to 29N40W, and to 24N45W. Convective precipitation: isolated moderate to locally strong from 27N northward between 32W and 46W. Rainshowers are possible also elsewhere from 20N northward from 40W westward. An upper level trough extends from a 26N21W cyclonic circulation center, to 21N22W, and 15N28W. No significant deep convective precipitation is apparent. Surface anticyclonic wind flow covers the Atlantic Ocean from 23N northward between Africa and 60W. For additional information please visit http://www.hurricanes.gov/marine $$ MT