Penobscot Bay
Small Craft Advisory in force. Rest of tonight: NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A slight chance of rain.
Penobscot 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.
- Gale Warning
- Small Craft Advisory
Now
The nearest stations reporting each, as of Sat, Sep 26, 3:00 AM EDT.
- Wind
- NNE 8 kt, gusts 10 kt at 44033
- Water
- 57°F at ATGM1
Alerts in force
Small Craft Advisory from Sat, Sep 26, 2:22 AM EDT until Mon, Sep 28, 8:00 AM EDT
Small Craft Advisory issued September 26 at 2:22AM EDT until September 28 at 8:00AM EDT by NWS Gray ME
The full text
* WHAT...Northeast winds 15 to 25 kt with gusts up to 35 kt and seas 3 to 6 ft. * WHERE...Penobscot Bay and Casco Bay. * WHEN...Until 8 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft.
Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
The forecast
Coastal Waters Forecast from National Weather Service Gray ME, issued Sat, Sep 26, 2:25 AM EDT, valid until Sat, Sep 26, 4:30 PM EDT. Wind in knots, seas in feet.
SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING
- Rest of tonight
- NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A slight chance of rain.
- Saturday
- NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NE 2 ft at 2 seconds and SE 2 ft at 10 seconds. A chance of rain in the afternoon.
- Saturday night
- NE winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 10 seconds and NE 2 ft at 2 seconds. Rain.
- Sunday
- NE winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 10 seconds and NE 3 ft at 3 seconds. A chance of rain in the morning, then rain likely in the afternoon.
- Sunday night
- NE winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: NE 2 ft at 3 seconds and S 2 ft at 8 seconds. Rain.
- Monday
- NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NE 2 ft at 2 seconds and S 2 ft at 6 seconds. Rain. Vsby 1 to 3 NM in the afternoon.
- Monday night
- NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Rain. Vsby 1 to 3 NM in the evening.
- Tuesday
- NE winds 5 to 10 kt. Seas 2 to 3 ft. Rain likely, mainly in the morning.
- Tuesday night
- N winds around 5 kt. Seas around 2 ft.
- Wednesday
- NW winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft.
- Wednesday night
- SW winds around 5 kt. Seas around 2 ft.
Synopsis
Synopsis for Stonington ME to Merrimack River Ma out to 60 NM
A nor'easter continues gradually tracking toward New England and lingers south of New England through the weekend and possibly into Monday of next week. The nor'easter is forecast to lift northeast near or across the Gulf of Maine early next week before high pressure returns toward midweek. A front may approach from the west by late next 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 |
|---|---|---|---|---|---|---|---|
| 44033 Buoy F01 - Penobscot Bay | 12 nm | NNE 8 kt, gusts 10 | 59°F | Sat, Sep 26, 2:30 AM EDT | |||
| MISM1 Matinicus Rock, ME | 26 nm | NE 23 kt, gusts 25 | 57°F | 1016.5 hPa | Sat, Sep 26, 3:20 AM EDT | ||
| ATGM1 8413320 - Bar Harbor, ME | 30 nm | ENE 9 kt, gusts 12 | 57°F | 60°F | 1018.4 hPa | Sat, Sep 26, 3:00 AM EDT | |
| 44034 Buoy I01 - Eastern Maine Shelf | 33 nm | 53°F | Sat, Sep 26, 3:00 AM EDT | ||||
| MDRM1 Mt. Desert Rock, ME | 35 nm | N 18 kt, gusts 19 | 55°F | 1017.5 hPa | Sat, Sep 26, 3:00 AM EDT | ||
| 44032 Buoy E01 - Central Maine Shelf | 37 nm | 57°F | Sat, Sep 26, 3:00 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 | 20 | Tue, Mar 17, 2026, 6:25 AM EDT |
| Special Marine Warning | 3 | Thu, Aug 13, 2026, 4:34 PM EDT |
| Storm Warning | 3 | Mon, Mar 16, 2026, 8:00 PM EDT |
| Freezing Spray Warning | 1 | Fri, Jan 23, 2026, 10:00 PM EST |
| Gale Watch | 12 | Mon, Feb 23, 2026, 7:00 AM EST |
| Storm Watch | 2 | Mon, Mar 16, 2026, 8:00 PM EDT |
| Small Craft Advisory | 78 | Fri, Sep 25, 2026, 11:00 AM EDT |
| Freezing Spray Advisory | 12 | Sun, Mar 1, 2026, 9:00 PM 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
- Intra Coastal Waters from Schoodic Point, ME to Stonington, ME
- Coastal Waters from Stonington, ME to Port Clyde, ME out 25 NM
- Coastal Waters from Schoodic Point, ME to Stonington, ME out 25 NM
- Coastal Waters from Port Clyde, ME to Cape Elizabeth, ME out 25 NM
- Waters from Schoodic Point ME to Stonington ME from 25 to 60 NM
- Waters from Stonington ME to Port Clyde ME from 25 to 60 NM
- Coastal Waters from Eastport, ME to Schoodic Point, ME out 25 NM
- Waters from Eastport ME to Schoodic Point ME from 25 to 60 NM or the Hague Line
- Casco Bay
- Waters from Port Clyde ME to Cape Elizabeth ME from 25 to 60 NM
Open the live map with marine zones and buoysThe hour-by-hour forecast for the middle of the zoneWaldo Area BeachesKnox Area BeachesHancock Area BeachesEvery Atlantic Coast zone
Sources
Coastal Waters Forecast CWFGYX from National Weather Service Gray ME, issued Sat, Sep 26, 2:25 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 07:53 UTC. All public domain, from the National Weather Service.