High Frequency Voice Broadcast (Mid Atlantic)

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FZNT34 KWBC 132107
OFFN32

Marine Weather HF Voice Broadcast
NWS Ocean Prediction Center Washington DC
407 PM EST Wed Dec 13 2017

West central North Atlantic continental shelf and slope waters
beyond 20 nm to 250 nm offshore, including south of Georges Bank
from 1000 fm to 250 nm offshore.

Conditions given represent the highest within that period.

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 MID ATLC WATERS...A strong low pressure system over
the Gulf of Saint Lawrence this evening will move N away from the
waters tonight. The next low pressure system will move E across
the northern mid-Atlantic waters later tonight into Thu, followed
by yet another low pressure system crossing the area Fri into Fri
night. High pressure will build E toward the region Sat, pass E
over the waters Sat night into Sun, then shift E of the waters
Sun night ahead of a weak cold front. The weak front will move SE
into the waters Mon into Mon night. 

Hudson Canyon to Baltimore Canyon including the waters west of
39.3N 71.9W...SW to 37.7N 72.9W

...GALE WARNING...

.TONIGHT...W winds 25 to 35 kt, diminishing to 20 to 30 kt
early, then becoming SW 25 to 35 kt. Seas 9 to 18 ft, subsiding 
to 6 to 10 ft. 
.THU...W to SW winds 25 to 35 kt, becoming W to NW 20 to 30 kt.
Seas 7 to 12 ft. 
.THU NIGHT...NW winds 15 to 25 kt. Seas 6 to 10 ft. 
.FRI...W to NW winds diminishing to 5 to 10 kt, then becoming W 
5 to 15 kt. Seas subsiding to 3 to 5 ft. A chance of showers.
.FRI NIGHT...W winds 10 to 20 kt, increasing to 20 to 30 kt.
Seas 2 to 3 ft, building to 5 to 8 ft. 
.SAT...W winds 25 to 35 kt. Seas building to 7 to 13 ft. 
.SAT NIGHT...NW winds 25 to 35 kt, diminishing to 10 to 20 kt.
Seas 7 to 12 ft. 
.SUN...Variable winds less than 10 kt, becoming SW 10 to 20 kt.
Seas subsiding to 2 to 5 ft. 
.SUN NIGHT...S to SW winds 10 to 20 kt. Seas 3 to 6 ft. 
.MON...W winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...W winds 10 to 15 kt. Seas 2 to 4 ft. 

Baltimore Canyon to the Hague Line south of 1000 fm

...STORM WARNING...

.TONIGHT...W to SW winds 35 to 45 kt. Seas 13 to 25 ft. 
Scattered showers. 
.THU...W to SW winds 40 to 50 kt. Seas 12 to 20 ft. Scattered
showers with VSBY 1 nm or less. 
.THU NIGHT...W to NW winds 20 to 30 kt. Seas 11 to 18 ft. 
.FRI...W to NW winds 10 to 20 kt. Seas subsiding to 7 to 12 ft. 
.FRI NIGHT...W to NW winds 20 to 30 kt. Seas 8 to 13 ft. 
.SAT...W to NW winds 35 to 45 kt. Seas building to 11 to 18 ft. 
.SAT NIGHT...NW winds 30 to 40 kt, diminishing to 20 to 30 kt.
Seas 12 to 19 ft. 
.SUN...NW winds 15 to 25 kt, becoming W 5 to 15 kt. Seas
subsiding to 8 to 14 ft. 
.SUN NIGHT...S to SW winds 10 to 20 kt, increasing to 20 to
30 kt. Seas subsiding to 5 to 9 ft. 
.MON...W winds 15 to 25 kt. Seas 5 to 9 ft. 
.MON NIGHT...W winds 10 to 20 kt. Seas 5 to 8 ft. 

Baltimore Canyon to Hatteras Canyon out to 36N 70W to 34N 71W

...GALE WARNING...

.TONIGHT...W winds 20 to 30 kt, becoming SW 25 to 35 kt. Seas
13 to 22 ft, subsiding to 7 to 14 ft. 
.THU...W winds 35 to 45 kt. Seas building to 10 to 18 ft. 
.THU NIGHT...W to NW winds 15 to 25 kt, becoming N to NW 10 to
20 kt. Seas subsiding to 8 to 15 ft. 
.FRI...N to NW winds less than 10 kt, becoming SW 15 to 25 kt.
Seas subsiding to 4 to 8 ft. 
.FRI NIGHT...W to NW winds increasing to 30 to 40 kt. Seas
building to 8 to 14 ft.
.SAT...W winds 20 to 30 kt, becoming NW. Seas 8 to 13 ft. 
.SAT NIGHT...NW winds 20 to 30 kt. Seas 9 to 13 ft. 
.SUN...N winds 10 to 20 kt, becoming S to SW. Seas 6 to 10 ft. 
.SUN NIGHT...S to SW winds 20 to 30 kt. Seas 5 to 9 ft. 
.MON...W to SW winds 15 to 25 kt. Seas 5 to 9 ft. 
.MON NIGHT...W winds 10 to 20 kt. Seas 5 to 9 ft. 

Hatteras Canyon to Cape Fear out to 34N 71W to 32N 73W

...GALE WARNING...

.TONIGHT...W to SW winds 15 to 25 kt, becoming SW 25 to 35 kt.
Seas 11 to 19 ft, subsiding to 6 to 12 ft. 
.THU...W winds 25 to 35 kt, diminishing to 20 to 30 kt. Seas
building to 8 to 14 ft. 
.THU NIGHT...W winds 15 to 25 kt. Seas 8 to 13 ft. 
.FRI...W to SW winds 10 to 20 kt, increasing to 20 to 30 kt.
Seas subsiding to 4 to 7 ft. Slight chance of showers. 
.FRI NIGHT...W winds 25 to 35 kt, becoming W to NW 20 to 30 kt.
Seas building to 7 to 13 ft. 
.SAT...NW winds 15 to 25 kt. Seas 7 to 12 ft. 
.SAT NIGHT...N to NW winds 10 to 20 kt. Seas subsiding to 4 to 8
ft.
.SUN...N to NE winds 5 to 15 kt, becoming S to SE. Seas 4 to
7 ft. 
.SUN NIGHT...S winds increasing to 20 to 30 kt. Seas 5 to 9 ft. 
.MON...W to SW winds 15 to 25 kt. Seas 5 to 9 ft. 
.MON NIGHT...W to SW winds 10 to 20 kt. Seas 5 to 8 ft. 

Cape Fear to 31N out to 32N 73W to 31N 74W

.TONIGHT...W to NW winds 10 to 20 kt, becoming SW 15 to 25 kt
early, then becoming W 20 to 30 kt. Seas 8 to 14 ft, subsiding 
to 5 to 9 ft. 
.THU...W winds 20 to 30 kt. Seas building to 7 to 11 ft. 
.THU NIGHT...W winds 15 to 25 kt. Seas 6 to 10 ft. 
.FRI...W winds 10 to 20 kt, increasing to 20 to 30 kt. Seas
subsiding to 4 to 7 ft. 
.FRI NIGHT...W to NW winds 20 to 30 kt. Seas building to 6 to 10
ft.
.SAT...NW winds 15 to 25 kt, becoming N to NW 5 to 15 kt. Seas
6 to 10 ft, subsiding to 5 to 8 ft. 
.SAT NIGHT...N to NE winds 5 to 15 kt. Seas 4 to 7 ft. 
.SUN...E to SE winds 5 to 15 kt, becoming S to SE. Seas becoming
3 to 5 ft. 
.SUN NIGHT...S winds increasing to 20 to 30 kt. Seas building to
5 to 9 ft.
.MON...S to SW winds diminishing to 10 to 20 kt. Seas becoming 4
to 7 ft.
.MON NIGHT...W to SW winds 10 to 20 kt. Seas 3 to 6 ft. 

.Forecaster Mills. Ocean Prediction Center.