000 FZNT32 KNHC 060957 OFFN21 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 557 AM EDT Wed Sep 6 2017 Marine Weather HF Voice Broadcast for the Gulf of Mexico Seas given as significant wave height, which is the average height of the highest 1/3 of the waves. Individual waves may be more than twice the significant wave height. Synopsis for the Gulf of Mexico .SYNOPSIS...Newly upgraded Tropical Storm Katie near 22.1N 96.3W AT 0900Z moving E-SE at 2 kt. Maximum sustained winds 35 kt gusts 45 kt. Katia is forecast to gradually strengthen during the next few days, reaching near 21.6N 95.6W tonight, near 21.1N 95.6W Wed night as a 60 kt Tropical Storm, near 20.4N 96.7W Thu night, and then move SW and inland to near 19.2N 98.7W Fri night where it will gradually diminish. Hurricane Irma is expected to move between Cuba and the Bahamas Sat and through the Straits of Florida late Sat evening and night and possibly across or near portions of the SE and E Gulf Sun, where Hurricane Conditions are Possible. Gulf of Mexico N of 26N W of 87W .TODAY...NE winds less than 10 kt, becoming N 10 to 20 kt in the afternoon. Seas 2 ft or less. .TONIGHT...NE winds 10 to 20 kt. Seas 3 to 4 ft. .THU...NE winds 15 to 25 kt. Seas 3 to 5 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .FRI...NE winds 15 to 25 kt. Seas 5 to 7 ft. .FRI NIGHT...NE winds 15 to 20 kt. Seas 4 to 6 ft. .SAT...NE winds 15 to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...NE winds 15 to 25 kt. Seas 5 to 7 ft. .SUN...NE winds 15 to 25 kt. Seas 6 to 9 ft. Gulf of Mexico from 22N to 26N W of 87W ...TROPICAL STORM WARNING... .TODAY...TROPICAL STORM CONDITIONS POSSIBLE. E winds 25 to 35 kt. Seas 3 to 5 ft. .TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. NE winds 35 to 45 kt. Seas 3 to 5 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. E winds 30 to 40 kt. Seas 3 to 5 ft. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 20 to 30 kt. Seas 4 to 6 ft. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. E winds 10 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT...NE winds 10 to 20 kt. Seas 4 to 5 ft. .SAT NIGHT...NE winds 15 to 25 kt. Seas 5 to 7 ft. .SUN...N winds 15 to 25 kt. Seas 5 to 7 ft. SW Gulf of Mexico S of 22N W of 87W ...TROPICAL STORM WARNING... .TODAY...TROPICAL STORM CONDITIONS POSSIBLE. Within 60 nm of coast of Veracruz, NW winds 25 to 35 kt. Elsewhere, SE winds 15 to 25 kt, becoming S 25 to 35 kt in the afternoon. Seas 2 ft or less, building to 3 to 4 ft in the afternoon. .TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. Within 60 nm of coast of Veracruz, NW winds 35 to 45 kt. Elsewhere, NW winds 35 to 45 kt, shifting to NE 40 to 50 kt after midnight. Seas 4 to 6 ft. .THU...TROPICAL STORM CONDITIONS EXPECTED. NW winds 35 to 45 kt within 60 nm of coast of Veracruz, and SE 40 to 50 kt elsewhere. Seas 5 to 7 ft. .THU NIGHT...TROPICAL STORM CONDITIONS EXPECTED. N winds 45 to 55 kt. Seas 6 to 8 ft. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. NW winds 45 to 55 kt within 60 nm of coast of Veracruz, and SE 45 to 55 kt elsewhere. Seas 8 to 11 ft within 60 nm of coast of Veracruz, and 5 to 7 ft elsewhere. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...N winds 10 to 20 kt. Seas 3 to 5 ft. Gulf of Mexico E of 87W .TODAY...SE winds less than 10 kt. Seas 2 ft or less. .TONIGHT...N winds less than 10 kt, becoming NE 10 to 20 kt after midnight. Seas 2 ft or less. .THU...NE winds 10 to 20 kt. Seas 2 ft or less, building to 3 ft in the afternoon. .THU NIGHT...NE winds 10 to 20 kt. Seas 3 ft. .FRI...NE winds 10 to 20 kt. Seas 3 to 4 ft. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT...HURRICANE CONDITIONS POSSIBLE. .SAT NIGHT...HURRICANE CONDITIONS POSSIBLE. .SUN...HURRICANE CONDITIONS POSSIBLE.