Cape Elizabeth ME to Merrimack River MA Marine Forecast
| Tonight...Sw Winds 5 To 10 Kt, Diminishing To Around 5 Kt Towards Daybreak. Seas 2 To 3 Ft. Wave Detail: Se 3 Ft At 9 Seconds. |
| Fri...Sw Winds Around 5 Kt, Becoming Se In The Afternoon. Seas 2 To 3 Ft. Wave Detail: Se 3 Ft At 8 Seconds. |
| Fri Night...S Winds 5 To 10 Kt. Seas 2 To 3 Ft. Wave Detail: Se 2 Ft At 7 Seconds. |
| Sat...Se Winds Around 5 Kt. Seas Around 2 Ft. Wave Detail: Se 2 Ft At 7 Seconds. |
| Sat Night...Se Winds Around 5 Kt, Becoming Ne Around 5 Kt After Midnight. Seas Around 2 Ft. Wave Detail: Se 2 Ft At 7 Seconds. |
| Sun...E Winds Around 5 Kt. Seas 2 To 3 Ft. Wave Detail: Se 3 Ft At 7 Seconds. |
| Sun Night...Se Winds Around 5 Kt, Becoming W After Midnight. Seas 2 To 3 Ft. |
| Mon...S Winds 5 To 10 Kt. Seas Around 2 Ft. |
| Mon Night...S Winds 5 To 10 Kt. Seas 2 To 3 Ft. |
| Tue...S Winds 5 To 10 Kt. Seas 2 To 3 Ft. A Chance Of Showers. |
| Tue Night...Se Winds 5 To 10 Kt. Seas Around 3 Ft. A Chance Of Showers. |
| Area Forecast Discussion National Weather Service Gray ME 800pm EDT Thu July 23 2026 .WHAT HAS CHANGED... Minor update to the Aviation section for the 00Z TAFs. .KEY MESSAGES... 1. High pressure brings mostly dry weather and seasonable temperatures through the weekend. 2. A ridge gives way to a troughing pattern by late this weekend and into next week, with generally seasonable days and a couple chances for rain. KEY MESSAGE 1 DESCRIPTION... Northwesterly winds will ease early this evening with mainly clear skies expected tonight. These clear skies and light winds will allow for strong radiational cooling. Forecast lows range from the lower 40s across the northern valleys with upper 40s to lower 50s in most other locations. Valley fog is possible towards dawn, which may result in some localized visibility restrictions. Surface high pressure will remain centered over New England on Friday into Friday night. This will result in mainly sunny skies and near average high temperatures into the lower 80s in most locations south of the mountains. Radiational cooling is likely once again Friday night with low temperatures falling into the 40s and 50s, coolest in valley locations. Pleasant conditions are then expected this weekend with continued low humidity and comfortable high temperatures into the lower 80s and low temperatures mainly into the 50s. KEY MESSAGE 2 DESCRIPTION... An upper level low becomes stationary and deepens across Hudson Bay by this weekend. A ridge passes through New England early this weekend, and then as the upper level low strengthens, troughing becomes more favored into the Northeast by early next week. With high pressure at the surface, a mainly sunny day with highs in the upper 70s to mid 80s is expected for Saturday. The high slides offshore during the day, bringing in a steady southeasterly flow along the coast that knocks temps back by the afternoon hours. Sunday sees a few more clouds and is likely cooler by a few degrees in easterly flow as a plume of moisture mostly passes offshore. There is still a small chance that this could trend a little closer and bring a chance for showers on the coast on Sunday, but at this point the forecast looks mainly dry. By Monday and Tuesday, a slow moving system approaches from the west. This brings an increasing chance for showers into western New Hampshire on Monday, and then showers and storms are likely across most of the area by Tuesday. Temperatures still look to warm into the upper 70s to mid 80s each day, with any showers and storms primarily in the afternoon hours. The front associated with the system likely takes until Wednesday to clear through New England, so a chance for showers and storms continues into Wednesday as well. By late in the week, ridging likely begins to build back in as the trough weakens, favoring a return to drier and slightly warming conditions. Marine Seas outside of the bays and east of Portland will remain at 3-6 ft through late this evening. Otherwise, winds and seas will remain below SCA (Small Craft Advisory) criteria through Friday night. Mainly fair conditions are expected this weekend through Monday as high pressure slides east of the Gulf of Maine. A cold front then slowly approaches from the west, with SCA (Small Craft Advisory) conditions in southerly flow possible by Tuesday, and continuing into Wednesday. High pressure then returns by late week. NOAA Gray/Portland ME Office - Watches - Warnings - Advisories ME...None. NH...None. Marine Small Craft Advisory until 2am EDT Friday for ANZ150-152. |
Portland ME Radar
Northeast Radar