Marine forecast
Ocean: the Merrimack River–Plymouth (40-60 nm)
- current wind
- 14 kt ESE
- Gusts
- 16 kt
- Seas
- 5.9 ft
- Period
- 6 sec
- Air
- 54°F
Observed Tue 2:30 PM | ANZ280
- Gusts now
- 16 kt
- Seas now
- 5.9 ft · 6 sec
- Air
- 54°F
- 72-hr peak
- 26 kt
- Peak seas
- 6 ft
In brief
At 2:30 pm EDT on Oct 13, 2026, NDBC station 44030 (Buoy B01 - Western Maine Shelf, 58 miles away) measured wind from the ESE at 14 kt, gusting to 16 kt; buoy 44098 measured seas of 5.9 ft. The NWS forecast for Ocean: the Merrimack River–Plymouth (40-60 nm), MA issued at 1:04 pm EDT on Oct 13, 2026 reads, for this afternoon: “SE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 6 ft.”
Source: National Weather Service Boston/Norton MA forecast; NDBC observations
Wind forecast · ktPeak 26 kt
Seas forecast · ftPeak 7 ft
NWS marine forecast
| Period | Forecast |
|---|---|
| This Afternoon | SE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 7 seconds and S 3 ft at 9 seconds. Patchy fog. A chance of showers. Vsby 1 to 3 NM. |
| Tonight | S winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 6 ft. Wave Detail: SE 6 ft at 7 seconds. Patchy fog. Showers likely. Vsby 1 to 3 NM in the evening. |
| Wed | SW winds 15 to 20 kt, becoming W 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 7 seconds and E 4 ft at 7 seconds. |
| Wed Night | NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 4 seconds and SE 3 ft at 7 seconds. |
| Thu | N winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: N 6 ft at 7 seconds and S 2 ft at 7 seconds. |
| Thu Night | N winds 5 to 10 kt, becoming E after midnight. Seas 3 to 5 ft, subsiding to 2 to 3 ft after midnight. Wave Detail: N 3 ft at 6 seconds and S 1 foot at 8 seconds, becoming N 2 ft at 5 seconds and SW 1 foot at 5 seconds. |
| Fri | S winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Showers. |
| Fri Night | W winds 25 to 30 kt with gusts up to 35 kt. Seas 6 to 9 ft. Showers likely. |
| Sat | NW winds 30 to 35 kt with gusts up to 40 kt. Seas 9 to 13 ft. |
| Sat Night | NW winds 25 to 30 kt with gusts up to 40 kt. Seas 8 to 11 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. |
Issued Tue 1:04 PM by Boston/Norton MA (product CWFBOX).
Recent buoy conditions
| Time | Wind | Gust | Seas | Water |
|---|---|---|---|---|
| Tue 2:30 PM | 14 kt ESE | 16 kt | — | — |
| Tue 1:50 PM | 12 kt ESE | 16 kt | — | — |
| Tue 12:50 PM | 14 kt NE | 18 kt | — | — |
| Tue 11:50 AM | 14 kt NE | 18 kt | — | — |
| Tue 10:50 AM | 16 kt NE | 19 kt | — | — |
| Tue 9:50 AM | 18 kt ENE | 21 kt | — | — |
| Tue 8:50 AM | 18 kt NE | 21 kt | — | — |
| Tue 7:50 AM | 16 kt NE | 19 kt | — | — |
| Tue 6:50 AM | 18 kt NE | 19 kt | — | — |
| Tue 5:50 AM | 18 kt ENE | 21 kt | — | — |
| Tue 4:50 AM | 19 kt ENE | 23 kt | — | — |
| Tue 3:50 AM | 18 kt ENE | 23 kt | — | — |
Observed Tue 2:30 PM at NDBC buoy 44030 (Buoy B01 - Western Maine Shelf), 57.6 miles away. Seas from buoy 44098 (Jeffrey's Ledge, NH (160)), 32.5 miles away, at Tue 3:00 PM.
Frequently asked questions
What is the marine forecast for Ocean: the Merrimack River–Plymouth (40-60 nm) today?
This Afternoon: SE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 7 seconds and S 3 ft at 9 seconds. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
Is there a small craft advisory for Ocean: the Merrimack River–Plymouth (40-60 nm)?
No advisories, warnings or watches are in effect for NWS zone ANZ280 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 Ocean: the Merrimack River–Plymouth (40-60 nm) right now?
Seas are running 5.9 ft at a 6-second period, measured at NDBC buoy 44030 Tue 2:30 PM, 57.6 miles from this zone. The forecast peaks at 6.0 ft Tue 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 ANZ280, issued by Boston/Norton MA, 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 CWFBOX, issued Tue 1:04 PM. Observations: NOAA National Data Buoy Center station 44030, read Tue 2:30 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.