Narragansett Bay
Today: NE winds 10 to 15 kt with gusts up to 25 kt, becoming E 5 to 10 kt this afternoon. Waves 2 to 3 ft. Patchy fog. Showers. Vsby 1 to 3 NM.
Narragansett Bay on the map
The zone and the zones around it, tinted where a marine warning or advisory is in force. Tap a neighboring zone to open its forecast.
- Small Craft Advisory
Now
The nearest stations reporting each, as of Mon, Sep 28, 7:00 AM EDT.
- Wind
- SSW 10 kt at NAXR1
- Water
- 64°F at NWPR1
Alerts in force
No marine warning or advisory is in force for this zone.
What is normally issued here: in the past year NWS Boston/Norton, MA issued 28 Gale Warnings, 8 Special Marine Warnings, 5 Storm Warnings, 1 Freezing Spray Warning for this zone.
The forecast
Coastal Waters Forecast from National Weather Service Boston/Norton MA, issued Mon, Sep 28, 7:05 AM EDT, valid until Mon, Sep 28, 8:00 PM EDT. Wind in knots, seas in feet.
- Today
- NE winds 10 to 15 kt with gusts up to 25 kt, becoming E 5 to 10 kt this afternoon. Waves 2 to 3 ft. Patchy fog. Showers. Vsby 1 to 3 NM.
- Tonight
- N winds 5 to 10 kt. Waves 2 to 3 ft. Patchy fog. Showers likely in the evening. Vsby 1 to 3 NM.
- Tuesday
- NW winds 5 to 10 kt. Waves around 2 ft. Patchy fog in the morning with vsby 1 to 3 NM.
- Tuesday night
- N winds around 5 kt. Waves around 2 ft in the evening, then 1 foot or less.
- Wednesday and Wednesday night
- SW winds around 5 kt. Waves 1 foot or less.
- Thursday through Friday night
- NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 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.
Synopsis
Synopsis for Massachusetts and Rhode Island coastal waters
A slow moving Nor'easter will continue to bring dangerous conditions for Mariners through Monday. Northeast winds continue to diminish with Small Craft Advisories in effect. High pressure builds in from the northwest starting Tuesday bringing quiet weather through late week.
Buoys and stations nearby
The latest report from each station within reach of the zone, nearest first. Distances in nautical miles from the middle of the zone.
| Station | Distance | Wind | Waves | Water | Air | Pressure | Reported |
|---|---|---|---|---|---|---|---|
| NAXR1 Potters Cove, Narragansett Bay Reserve, RI | 3 nm | SSW 10 kt | 58°F | 1010.0 hPa | Mon, Sep 28, 7:00 AM EDT | ||
| PTCR1 8452951 - Potter Cove, Prudence Island, RI | 4 nm | NE 8 kt, gusts 12 | 58°F | 1009.9 hPa | Mon, Sep 28, 7:00 AM EDT | ||
| PDVR1 8454123 - Port of Davisville, RI | 4 nm | N 12 kt, gusts 16 | 58°F | 1009.8 hPa | Mon, Sep 28, 7:00 AM EDT | ||
| NWPR1 8452660 - Newport, RI | 5 nm | N 12 kt, gusts 16 | 64°F | 59°F | 1009.4 hPa | Mon, Sep 28, 7:00 AM EDT | |
| CPTR1 8452944 - Conimicut Light, RI | 8 nm | N 15 kt, gusts 19 | 64°F | 57°F | 1010.1 hPa | Mon, Sep 28, 7:00 AM EDT | |
| BLTM3 8447387 - Borden Flats Light at Fall River, MA | 10 nm | NNE 13 kt, gusts 16 | 59°F | 1010.0 hPa | Mon, Sep 28, 7:00 AM EDT |
The past year
Warnings, watches and advisories the National Weather Service issued for this zone over the past 12 months, from the Iowa Environmental Mesonet’s archive.
| Product | Issued | Most recent |
|---|---|---|
| Gale Warning | 28 | Fri, Sep 25, 2026, 8:00 AM EDT |
| Special Marine Warning | 8 | Thu, Aug 13, 2026, 6:45 PM EDT |
| Storm Warning | 5 | Fri, Sep 25, 2026, 2:00 PM EDT |
| Freezing Spray Warning | 1 | Sat, Feb 7, 2026, 4:00 PM EST |
| Gale Watch | 14 | Sat, May 30, 2026, 11:00 AM EDT |
| Storm Watch | 2 | Mon, Mar 16, 2026, 5:00 PM EDT |
| Freezing Spray Watch | 1 | Sat, Feb 7, 2026, 4:00 PM EST |
| Severe Thunderstorm Watch | 1 | Sat, Jul 4, 2026, 7:20 PM EDT |
| Small Craft Advisory | 69 | Sun, Sep 27, 2026, 2:21 AM EDT |
| Freezing Spray Advisory | 6 | Mon, Feb 9, 2026, 12:31 AM EST |
What this means
Marine forecasts give wind in knots (1 knot is 1.15 mph) and seas in feet, except the high seas forecasts, which give seas in meters. Seas are the significant wave height, the average of the highest third of the waves; individual waves may be more than twice that. On the Great Lakes the forecast gives waves, not seas. "Wave Detail" splits the seas into the wind waves and each swell, with its direction and period.
Each coastal office writes a Coastal Waters Forecast for the bays, sounds and ocean out to 20 to 60 nautical miles, or on the Great Lakes a Nearshore Marine Forecast within 5 nautical miles of shore; the Open Lakes Forecast covers the rest of each lake. The Ocean Prediction Center and the National Hurricane Center write the Offshore Waters Forecasts out to about 250 nautical miles, and the High Seas Forecasts beyond. Forecasts are issued at least twice a day and updated when they go wrong.
- Small Craft Advisory
- Winds or conditions hazardous to small boats. The thresholds are set by each NWS region: typically sustained winds or frequent gusts of 20 to 25 knots up to 33 knots, and seas of 5 to 7 feet or more.
- Gale Warning
- Sustained winds or frequent gusts of 34 to 47 knots, not from a tropical cyclone.
- Storm Warning
- Sustained winds or frequent gusts of 48 to 63 knots, not from a tropical cyclone.
- Hurricane Force Wind Warning
- Sustained winds or frequent gusts of 64 knots or more, not from a tropical cyclone.
- Special Marine Warning
- A thunderstorm or squall over the water with winds or gusts of 34 knots or more, hail of 3/4 inch or more, or a waterspout, for up to two hours.
- Hazardous Seas Warning
- Wave heights or steepness at or above the office’s warning threshold, when the wind alone does not warrant a warning.
- Heavy Freezing Spray Warning
- Spray freezing on a vessel at 2 cm (3/4 inch) an hour or more.
- Tropical Storm and Hurricane Warnings
- Tropical storm (34 to 63 knots) or hurricane (64 knots or more) conditions expected within 36 hours. Watches: possible within 48 hours.
Nearby
- Rhode Island Sound
- Buzzards Bay
- Block Island Sound
- Vineyard Sound
- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island
- Long Island Sound East of the Mouth of the Connecticut River
- Nantucket Sound
- Boston Harbor
- Cape Cod Bay
- Peconic and Gardiners Bays
Open the live map with marine zones and buoysThe hour-by-hour forecast for the middle of the zoneNewport Area BeachesBristol Area BeachesNarragansett, Charlestown and Westerly BeachesEvery Atlantic Coast zone
Sources
Coastal Waters Forecast CWFBOX from National Weather Service Boston/Norton MA, issued Mon, Sep 28, 7:05 AM EDT. Original at NWS. Buoy reports from the National Data Buoy Center. Past products from the Iowa Environmental Mesonet. Zone outlines from the NWS marine and offshore zone boundaries. Warnings and advisories from the NWS API, read 11:49 UTC. All public domain, from the National Weather Service.