000
FZNT32 KNHC 180928
OFFN21

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
528 AM EDT Wed Aug 18 2021

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...Tropical Storm Grace over the northwest Caribbean
Sea near 18.8N 80.9W 998 mb at 5 AM EDT moving W at 14 kt.
Maximum sustained winds 55 kt gusts 65 kt. Grace will move to
19.3N 83.2W this afternoon, strengthen to a hurricane near 19.9N
86.4W late tonight with maximum sustained winds 75 kt guts
90 kt, and weaken to a tropical storm inland the northern
Yucatan Peninsula Thu afternoon with maximum sustained winds
50 kt gusts 60 kt Grace will re-strengthen to a hurricane near
20.7N 93.4W Fri afternoon with maximum sustained winds 65 kt
gusts 80 kt, reach to near 20.7N 96.8W late Fri night and move
inland late Sat night. Winds and seas will begin to increase
across the southeastern Gulf ahead of Grace today. These
conditions will shift to west of 90W Thu through late Fri night.
 

Gulf of Mexico N of 26N W of 87W

.TODAY...SE winds 10 to 15 kt. Seas 3 ft. 
.TONIGHT...SE winds 10 to 20 kt. Seas 3 to 4 ft. 
.THU...SE winds 10 to 20 kt. Seas 3 to 5 ft. 
.THU NIGHT...SE winds 15 to 25 kt. Seas 5 to 7 ft. 
.FRI...SE winds 15 to 25 kt. Seas 6 to 9 ft. 
.FRI NIGHT...SE winds 10 to 20 kt. Seas 5 to 7 ft. 
.SAT...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.SUN...E winds 10 to 15 kt. Seas 3 to 5 ft. 

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

...TROPICAL STORM WARNING...

.TODAY...SE winds 10 to 20 kt. Seas 3 to 4 ft. 
.TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 10 to
20 kt, increasing to 20 to 30 kt after midnight. Seas 4 to 6 ft.
.THU...TROPICAL STORM CONDITIONS EXPECTED. E winds 25 to 35 kt.
Seas 10 to 14 ft. 
.THU NIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 25 to
35 kt. Seas 10 to 15 ft between 87W and 94W, and 6 to 8 ft W of
94W.
.FRI...TROPICAL STORM CONDITIONS POSSIBLE. E winds 25 to 35 kt.
Seas 10 to 17 ft.
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT NIGHT...E winds 15 to 25 kt. Seas 6 to 8 ft. 
.SUN...E winds 15 to 25 kt. Seas 6 to 8 ft. 

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

...TROPICAL STORM WARNING...

.TODAY...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 10 to
15 kt within 60 nm of coast of Veracruz, and NE 20 to 30 kt
elsewhere. Seas 3 to 5 ft. 
.THU...TROPICAL STORM CONDITIONS EXPECTED. Within 60 nm of
coast of Veracruz, E winds 10 to 15 kt, shifting to NE in the
afternoon. Elsewhere, NE winds 25 to 35 kt. Seas 6 to 9 ft 
within 60 nm of coast of Veracruz, and 5 to 7 ft elsewhere. 
.THU NIGHT...TROPICAL STORM CONDITIONS EXPECTED. Within 60 nm
of coast of Veracruz, NE winds less than 10 kt, shifting to N
after midnight. Elsewhere, NE winds 40 to 50 kt. Seas
5 to 7 ft within 60 nm of coast of Veracruz, and 9 to 14 ft 
elsewhere. 
.FRI...HURRICANE CONDITIONS POSSIBLE. Within 60 nm of coast of
Veracruz, NW winds 10 to 20 kt,Seas 3 to 5 ft, building to 6 to
9 ft in the afternoon. Elsewhere, SE winds 45 to 55 kt,
increasing to 55 to 65 kt in the afternoon,Seas 9 to 14 ft. 
.FRI NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT NIGHT...SE winds 15 to 25 kt within 60 nm of coast of
Veracruz, and E 15 to 25 kt elsewhere. Seas 6 to 8 ft. 
.SUN...E winds 10 to 20 kt. Seas 4 to 6 ft. 

Gulf of Mexico E of 87W

.TODAY...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 20 to
30 kt. Seas 4 to 6 ft. 
.THU...TROPICAL STORM CONDITIONS POSSIBLE. E winds 20 to 30 kt.
Seas 5 to 7 ft. 
.THU NIGHT...E winds 15 to 25 kt. Seas 4 to 6 ft. 
.FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft in the
evening, subsiding to 2 ft or less. 
.SAT...E winds 10 to 15 kt. Seas 2 ft or less. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 2 ft or less. 
.SUN...E winds 10 to 15 kt. Seas 2 ft or less.