Marine forecast
Ipswich Bay & Stellwagen Bank NMS, MA
- current wind
- 16 kt SSE
- Gusts
- 19 kt
- Seas
- 5.9 ft
- Period
- 6 sec
- Air
- 57°F
Observed Tue 3:10 PM | ANZ250
- Gusts now
- 19 kt
- Seas now
- 5.9 ft · 6 sec
- Air
- 57°F
- Water
- 58°F
- 72-hr peak
- 20 kt
In brief
At 3:10 pm EDT on Oct 13, 2026, NDBC station 44013 (BOSTON 16 NM East of Boston, MA, 24 miles away) measured wind from the SSE at 16 kt, gusting to 19 kt; buoy 44098 measured seas of 5.9 ft. The NWS forecast for Ipswich Bay & Stellwagen Bank NMS, MA issued at 1:04 pm EDT on Oct 13, 2026 reads, for this afternoon: “SE winds around 15 kt with gusts up to 20 kt. Seas 4 to 5 ft.” A Small Craft Advisory is in effect until Wed 2:00 AM.
Source: National Weather Service Boston/Norton MA forecast; NDBC observations
Wind forecast · ktPeak 20 kt
Seas forecast · ftPeak 5 ft
Marine advisory
Small Craft Advisory in effect for Ipswich Bay & Stellwagen Bank NMS until Wed 2:00 AM.
Full text of this small craft advisory
* WHAT...South winds around 15 kt with gusts up to 25 kt and seas 4 to 6 feet. * WHERE...Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary. * WHEN...Until 2 AM EDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft.
NWS marine forecast
| Period | Forecast |
|---|---|
| This Afternoon | SE winds around 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 7 seconds and SE 2 ft at 8 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 4 to 5 ft. Wave Detail: E 5 ft at 7 seconds and S 3 ft at 4 seconds. Patchy fog. A chance of showers. |
| Wed | SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 7 seconds and SW 3 ft at 4 seconds. |
| Wed Night | NW winds around 10 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and SE 3 ft at 7 seconds. |
| Thu | N winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: N 3 ft at 5 seconds and SE 1 foot at 8 seconds. |
| Thu Night | N winds around 5 kt, becoming SE after midnight. Seas 2 to 3 ft. Wave Detail: N 3 ft at 5 seconds and SE 1 foot at 10 seconds. |
| Fri | S winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Showers. |
| Fri Night | W winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to 6 ft. Showers likely. |
| Sat | NW winds 25 to 30 kt with gusts up to 40 kt. Seas 7 to 10 ft. |
| Sat Night | NW winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to 8 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 3:10 PM | 16 kt SSE | 19 kt | — | 58°F |
| Tue 2:50 PM | 16 kt SSE | 19 kt | 4.9 ft | 58°F |
| Tue 1:50 PM | 14 kt SSE | 18 kt | 5.6 ft | 58°F |
| Tue 12:50 PM | 10 kt SE | 14 kt | 5.6 ft | 58°F |
| Tue 11:50 AM | 10 kt ESE | 14 kt | 5.9 ft | 58°F |
| Tue 10:50 AM | 12 kt E | 14 kt | 6.2 ft | 58°F |
| Tue 9:50 AM | 14 kt E | 18 kt | 5.6 ft | 58°F |
| Tue 8:50 AM | 16 kt E | 19 kt | 5.6 ft | 58°F |
| Tue 7:50 AM | 16 kt ENE | 18 kt | 5.2 ft | 58°F |
| Tue 6:50 AM | 16 kt ENE | 19 kt | 5.2 ft | 58°F |
| Tue 5:50 AM | 16 kt ENE | 19 kt | 4.9 ft | 58°F |
| Tue 4:50 AM | 18 kt E | 19 kt | 4.3 ft | 58°F |
Observed Tue 3:10 PM at NDBC buoy 44013 (BOSTON 16 NM East of Boston, MA), 24.0 miles away. Seas from buoy 44098 (Jeffrey's Ledge, NH (160)), 31.2 miles away, at Tue 3:00 PM.
Frequently asked questions
What is the marine forecast for Ipswich Bay & Stellwagen Bank NMS today?
This Afternoon: SE winds around 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 7 seconds and SE 2 ft at 8 seconds. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
Is there a small craft advisory for Ipswich Bay & Stellwagen Bank NMS?
Yes — small craft advisory in effect until Wed 2:00 AM.
How high are the waves at Ipswich Bay & Stellwagen Bank NMS right now?
Seas are running 5.9 ft at a 6-second period, measured at NDBC buoy 44013 Tue 3:10 PM, 24.0 miles from this zone. The forecast peaks at 5.0 ft Tue 3 PM.
What is the water temperature at Ipswich Bay & Stellwagen Bank NMS?
The nearest buoy read 58°F (14°C) at Tue 3:10 PM. Sea surface temperature at a single buoy can differ by several degrees from the water at a beach or in a shallow bay nearby.
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 ANZ250, 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 44013, read Tue 3:10 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.