Sandy Bay Yacht Club
Weather Center


 

New England Continental Shelf

FZNT21 KWBC 170220
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
1020 PM EDT Thu Sep 16 2021

New England continental shelf and slope waters from 25 nm
offshore to the Hague Line, except to 1000 fm south of New
England.

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.

ANZ898-180230-
1020 PM EDT Thu Sep 16 2021

.SYNOPSIS FOR NEW ENGLAND WATERS...A stationary front over the
S waters tonight will lift N as a warm front tonight into Fri 
and dissipate. High pressure passing NE and E of the area will 
maintain a weakening high pressure ridge across the N portion Fri
into Sat. Meanwhile, a tropical depression is likely to form 
across the Mid-Atlantic offshore waters during the next day or 
so. This possible tropical cyclone will track N and NE across the
Mid-Atlantic offshore waters tonight through Fri night, pass 
just S and SE of Georges Bank Sat and Sat night, then move E of 
the region Sat night into Sun. Mariners should closely monitor 
the latest information from the National Hurricane Center 
regarding the formation chances of this system. High pressure 
will slowly build SE over the area Sun and Sun night, then 
persist across the areas through Tue night. 

$$

ANZ800-180230-
Gulf of Maine to the Hague Line-
1020 PM EDT Thu Sep 16 2021

.TONIGHT...E winds 5 to 15 kt. Seas 3 to 4 ft. 
.FRI...E to SE winds 5 to 10 kt. Seas 3 to 4 ft. Areas of fog
with vsby 1 nm or less. 
.FRI NIGHT...SE winds 5 to 10 kt, becoming E. Seas 3 to 5 ft.
Areas of fog with vsby 1 nm or less. 
.SAT...E to NE winds 5 to 15 kt. Seas 3 to 6 ft. Areas of fog
with vsby 1 nm or less. 
.SAT NIGHT...N winds 5 to 15 kt, increasing to 10 to 20 kt. Seas
4 to 7 ft. 
.SUN...N winds 15 to 25 kt. Seas 4 to 8 ft. 
.SUN NIGHT...N to NE winds 10 to 15 kt. Seas 4 to 7 ft. 
.MON...N winds 10 to 15 kt, becoming N to NE 5 to 10 kt. Seas
3 to 5 ft. 
.MON NIGHT...N winds 5 to 10 kt, becoming W to SW. Seas 3 to
5 ft. 
.TUE...N to NE winds 5 to 10 kt, becoming variable. Seas 3 to
4 ft. 
.TUE NIGHT...S to SW winds less than 10 kt, becoming SW. Seas
3 to 5 ft. 

$$

ANZ805-180230-
Georges Bank between Cape Cod and 68W north of 1000 FM-
1020 PM EDT Thu Sep 16 2021

...GALE WARNING...

.TONIGHT...E to SE winds 5 to 15 kt. Seas 3 to 5 ft. Areas of
fog with vsby 1 nm or less. 
.FRI...E to SE winds 10 to 20 kt. Seas 3 to 6 ft. Areas of fog
and scattered showers with vsby 1 nm or less. 
.FRI NIGHT...E winds 15 to 25 kt except S portion 20 to 30 kt. 
Seas 6 to 11 ft. Areas of fog with vsby 1 nm or less. 
.SAT...E to NE winds 30 to 40 kt, becoming N 20 to 30 kt. Seas
8 to 13 ft. Tstms, showers and fog with vsby 1 nm or less. 
.SAT NIGHT...N winds 15 to 25 kt. Seas 6 to 10 ft.
.SUN...N winds 15 to 25 kt. Seas 5 to 7 ft. 
.SUN NIGHT...N winds 10 to 20 kt, diminishing to 5 to 15 kt.
Seas 4 to 7 ft. 
.MON...N winds 10 to 15 kt, becoming NE. Seas 4 to 6 ft. 
.MON NIGHT...N to NE winds 5 to 15 kt, becoming NE 5 to 10 kt.
Seas 3 to 6 ft. 
.TUE...N to NE winds 5 to 10 kt, becoming E. Seas 3 to 6 ft. 
.TUE NIGHT...E winds less than 10 kt, becoming variable. Seas
3 to 6 ft. 

$$

ANZ900-180230-
Georges Bank between 68W and the Hague Line-
1020 PM EDT Thu Sep 16 2021

...GALE WARNING...

.TONIGHT...E to SE winds 5 to 10 kt, becoming SE 5 to 15 kt.
Seas 3 to 4 ft. Areas of fog with vsby 1 nm or less. 
.FRI...SE winds 5 to 15 kt, becoming E to SE 10 to 20 kt. Seas
3 to 6 ft. Scattered showers and areas of fog with vsby 1 nm or
less. 
.FRI NIGHT...E to SE winds 20 to 30 kt. Seas 6 to 11 ft. Areas
of fog with vsby 1 nm or less. 
.SAT...E winds 30 to 40 kt, becoming NE 20 to 30 kt. Seas 8 to
14 ft. Tstms and scattered showers. Areas of fog. Vsby 1 NM or
less. 
.SAT NIGHT...N winds 20 to 30 kt. Seas 7 to 12 ft.
.SUN...N to NW winds 15 to 25 kt. Seas 6 to 8 ft. 
.SUN NIGHT...N winds 15 to 25 kt. Seas 5 to 8 ft. 
.MON...N winds 10 to 20 kt. Seas 4 to 8 ft. 
.MON NIGHT...N winds 10 to 15 kt, diminishing to 5 to 10 kt.
Seas 4 to 7 ft. 
.TUE...N to NE winds 5 to 10 kt. Seas 4 to 7 ft. 
.TUE NIGHT...E to NE winds less than 10 kt, becoming W to NW.
Seas 4 to 7 ft. 

$$

ANZ810-180230-
South of New England between the Great South Channel and Montauk
Point to 1000 FM-
1020 PM EDT Thu Sep 16 2021

.TONIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt. Seas
3 to 5 ft. 
.FRI...E winds 10 to 20 kt. Seas 4 to 7 ft. Scattered showers
with vsby 1 nm or less. 
.FRI NIGHT...E winds 15 to 25 kt, becoming NE 20 to 30 kt. Seas
6 to 11 ft. Tstms and scattered showers. 
.SAT...NE winds 20 to 30 kt, becoming N. Seas 7 to 12 ft. Tstms
and scattered showers. 
.SAT NIGHT...N to NW winds 15 to 25 kt. Seas 6 to 10 ft. 
.SUN...N winds 10 to 20 kt. Seas 4 to 7 ft. 
.SUN NIGHT...NE winds 10 to 20 kt, diminishing to 5 to 15 kt.
Seas 4 to 7 ft. 
.MON...N to NE winds 5 to 15 kt, becoming NE 5 to 10 kt. Seas
3 to 6 ft. 
.MON NIGHT...NE winds 5 to 10 kt. Seas 3 to 6 ft.
.TUE...NE winds 5 to 10 kt, becoming E. Seas 3 to 6 ft. 
.TUE NIGHT...E to SE winds 5 to 10 kt. Seas 3 to 6 ft. 

$$

ANZ815-180230-
South of Long Island between Montauk Point and Sandy Hook to
1000 FM-
1020 PM EDT Thu Sep 16 2021

.TONIGHT...E winds 10 to 15 kt, becoming E to NE 10 to 20 kt.
Seas 3 to 6 ft. 
.FRI...E to NE winds 15 to 20 kt. Seas 4 to 8 ft. Scattered
showers. 
.FRI NIGHT...NE winds 15 to 25 kt. Seas 6 to 9 ft. 
.SAT...N winds 15 to 25 kt. Seas 5 to 9 ft. Tstms and scattered
showers. 
.SAT NIGHT...N to NW winds 5 to 15 kt. Seas 4 to 7 ft. 
.SUN...N winds 10 to 20 kt, becoming N to NE 5 to 15 kt. Seas
3 to 6 ft. 
.SUN NIGHT...E to NE winds 5 to 15 kt, becoming E 5 to 10 kt.
Seas 3 to 5 ft. 
.MON...E to NE winds less than 10 kt. Seas 3 to 4 ft. 
.MON NIGHT...E to SE winds 5 to 10 kt. Seas 3 to 4 ft. 
.TUE...E to NE winds 5 to 10 kt. Seas 3 to 4 ft. 
.TUE NIGHT...E winds 5 to 10 kt, becoming SE. Seas 3 to 5 ft. 

$$

.Forecaster Rowland. Ocean Prediction Center.

 

 



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