Marine Forecast
Illustrated map of Greenwood Lake

Marine forecast

Delaware Bay waters S of East Pt.–Slaughter Beach

current wind
11 kt S
Gusts
13 kt
Seas
1.6 ft
Period
6 sec
Air
68°F

Observed Tue 3:00 PM | ANZ431

Gusts now
13 kt
Seas now
1.6 ft · 6 sec
Air
68°F
72-hr peak
23 kt
Peak seas
3 ft

In brief

At 3:00 pm EDT on Oct 13, 2026, NDBC station BRND1 (Brandywine Shoal Light, DE, 11 miles away) measured wind from the S at 11 kt, gusting to 13 kt; buoy 44084 measured seas of 1.6 ft. The NWS forecast for Delaware Bay waters S of East Pt.–Slaughter Beach, NJ issued at 9:18 am EDT on Oct 13, 2026 reads, for today: “W winds around 5 kt, becoming S this afternoon. Seas around 2 ft.”

Source: National Weather Service Mount Holly NJ forecast; NDBC observations

Wind forecast · ktPeak 23 kt

05101520253035Wed 14Thu 15Fri 1605101520253035Wed 14Thu 15Fri 16
Sustained GustOct 13-16 | EDT

Seas forecast · ftPeak 3 ft

0123Wed 14Thu 15Fri 160123Wed 14Thu 15Fri 16
Oct 13-16 | EDT

NWS marine forecast

PeriodForecast
TodayW winds around 5 kt, becoming S this afternoon. Seas around 2 ft.
TonightSW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft.
WedSW winds 5 to 10 kt. Seas around 2 ft.
Wed NightW winds 5 to 10 kt, becoming N 10 to 15 kt after midnight. Seas around 2 ft. A chance of showers.
ThuNE winds 10 to 15 kt. Seas around 2 ft. A chance of showers in the morning.
Thu NightSE winds around 10 kt. Seas around 2 ft. Showers likely after midnight.
FriS winds 10 to 15 kt, becoming SW 20 to 25 kt in the afternoon. Seas 2 to 3 ft. A chance of showers in the morning, then showers likely in the afternoon.
Fri NightNW winds 25 to 35 kt, becoming 30 to 35 kt after midnight. Seas 4 to 6 ft. Showers likely in the evening.
SatNW winds 25 to 30 kt. Seas 4 to 6 ft.
Sat NightNW winds 25 to 30 kt, diminishing to 15 to 20 kt after midnight. Seas 4 to 6 ft, subsiding to 2 to 4 ft after midnight.

Issued Tue 9:18 AM by Mount Holly NJ (product CWFPHI).

TimeWindGustSeasWater
Tue 3:00 PM 11 kt S 13 kt — —
Tue 2:54 PM 12 kt SSE 13 kt — —
Tue 1:54 PM 9 kt SSE 9 kt — —
Tue 10:00 AM 8 kt WSW 9 kt — —
Tue 9:54 AM 8 kt WSW 8 kt — —
Tue 8:54 AM 6 kt W 8 kt — —
Tue 7:54 AM 8 kt WNW 9 kt — —
Tue 6:54 AM 5 kt WNW 6 kt — —
Tue 5:54 AM 7 kt WNW 8 kt — —
Tue 4:54 AM 6 kt WNW 7 kt — —
Tue 3:54 AM 8 kt WNW 9 kt — —
Tue 2:54 AM 5 kt W 6 kt — —

Observed Tue 3:00 PM at NDBC buoy BRND1 (Brandywine Shoal Light, DE), 11.4 miles away. Seas from buoy 44084 (Bethany Beach, DE (263)), 41.7 miles away, at Tue 2:26 PM.

What is the marine forecast for Delaware Bay waters S of East Pt.–Slaughter Beach today?

Today: W winds around 5 kt, becoming S this afternoon. Seas around 2 ft.

Is there a small craft advisory for Delaware Bay waters S of East Pt.–Slaughter Beach?

No advisories, warnings or watches are in effect for NWS zone ANZ431 as of the last update on this page. Advisories can be issued at any time; check the current bulletin before leaving the dock.

How high are the waves at Delaware Bay waters S of East Pt.–Slaughter Beach right now?

Seas are running 1.6 ft at a 6-second period, measured at NDBC buoy BRND1 Tue 3:00 PM, 11.4 miles from this zone. The forecast peaks at 3.0 ft Fri 3 PM.

What do the wind speeds in knots mean?

One knot is 1.15 mph. The National Weather Service issues a small craft advisory for sustained winds of roughly 22–33 knots or hazardous seas, a gale warning at 34–47 knots, and a storm warning at 48 knots and above. Exact advisory thresholds vary by forecast office and by water body — a bay reaches dangerous chop at a lower wind speed than open ocean.

Where does this forecast come from?

The forecast text is the National Weather Service's own marine bulletin for zone ANZ431, issued by Mount Holly NJ, reproduced in full. The wind and seas charts are drawn from the NWS gridded forecast for a point inside the zone. Observations come from the nearest reporting NDBC buoy. We are not affiliated with NOAA or the National Weather Service.

Forecast: NOAA/NWS product CWFPHI, issued Tue 9:18 AM. Observations: NOAA National Data Buoy Center station BRND1, read Tue 3:00 PM. Retrieved Oct 13, 3:42 PM. Conditions offshore change faster than any page can be rebuilt, so check the current NWS bulletin and your own instruments before going out.