000
FZNT32 KNHC 180838
OFFN21

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
338 AM EST Tue Dec 18 2018

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...A developing intense low pressure system will move
E-NE from Texas to the Carolinas Wed through Thu night, dragging
a strong cold front across the Gulf waters. Marine conditions
are expected to rapidly deteriorate across the region Thu
afternoon as the low pressure deepens. Gale force winds are
likely north of 25N across the central and northern Gulf Thu
night and Fri. Seas will build to a maximum of around 20 ft on
Fri east of 90W. 

Gulf of Mexico N of 26N W of 87W

...GALE CONDITIONS POSSIBLE...

.TODAY...E winds 10 to 15 kt. Seas 2 ft or less. 
.TONIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. 
.WED...S winds 10 to 15 kt. Seas 3 to 4 ft. 
.WED NIGHT...W winds 10 to 20 kt. Seas 3 to 5 ft. 
.THU...NW winds 20 to 30 kt. Seas 5 to 7 ft, building to 8 to
11 ft late. 
.THU NIGHT...NW winds 25 to 35 kt. Seas 13 to 18 ft. 
.FRI...NW winds 25 to 35 kt. Seas 13 to 18 ft, subsiding to 9 to
14 ft late. 
.FRI NIGHT...NW winds 15 to 25 kt, shifting to W 10 to 15 kt
late. Seas 6 to 10 ft. 
.SAT...SW winds 10 to 15 kt. Seas 3 to 5 ft. 
.SAT NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. 

Gulf of Mexico from 22N to 26N W of 87W

...GALE CONDITIONS POSSIBLE...

.TODAY...SE winds less than 10 kt. Seas 2 ft or less. 
.TONIGHT...SE winds 10 to 15 kt. Seas 2 to 3 ft. 
.WED...S winds less than 10 kt. Seas 3 ft. 
.WED NIGHT...W winds 10 to 15 kt. Seas 3 to 4 ft.
.THU...NW winds 20 to 30 kt. Seas 4 to 6 ft, building to 7 to
10 ft late. 
.THU NIGHT...NW winds 20 to 30 kt. Seas 11 to 16 ft. 
.FRI...NW winds 20 to 30 kt. Seas 11 to 16 ft. 
.FRI NIGHT...NW winds 10 to 20 kt, becoming W less than 10 kt
after midnight. Seas 7 to 10 ft. 
.SAT...SE winds 10 to 15 kt. Seas 5 to 7 ft. 
.SAT NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. 

SW Gulf of Mexico S of 22N W of 87W

.TODAY...Variable winds less than 10 kt. Seas 2 ft or less. 
.TONIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. 
.WED...SE winds 10 to 15 kt. Seas 2 to 4 ft. 
.WED NIGHT...NW winds less than 10 kt. Seas 2 ft or less. 
.THU...NW winds 10 to 20 kt. Seas 3 to 5 ft. 
.THU NIGHT...N winds 15 to 25 kt. Seas 7 to 10 ft.
.FRI...NW winds 10 to 20 kt. Seas 8 to 11 ft. 
.FRI NIGHT...E winds less than 10 kt. Seas 7 to 10 ft. 
.SAT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 

Gulf of Mexico E of 87W

...GALE CONDITIONS POSSIBLE...

.TODAY...NE winds 10 kt. Seas 3 ft. 
.TONIGHT...E winds 10 kt. Seas 2 ft or less. 
.WED...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.WED NIGHT...S winds 10 to 20 kt. Seas 4 to 6 ft.
.THU...SW winds 15 to 25 kt. Seas 7 to 10 ft. 
.THU NIGHT...W winds 25 to 35 kt. Seas 9 to 13 ft, building to
13 to 18 ft after midnight. 
.FRI...W winds 25 to 35 kt. Seas 16 to 20 ft. 
.FRI NIGHT...NW winds 20 to 30 kt, diminishing to 15 to 20 kt
late. Seas 15 to 19 ft, subsiding to 10 to 15 ft late.
.SAT...NW winds 10 to 15 kt. Seas 7 to 10 ft. 
.SAT NIGHT...E winds less than 10 kt. Seas 4 to 6 ft.