Eastport ME to Schoodic Point ME out 25 NM Marine Forecast
| Tonight...S Winds 5 To 10 Kt. Gusts Up To 20 Kt Late This Evening And Early Morning. Seas Around 3 Ft. Wave Detail: S 3 Ft At 8 Seconds. Patchy Fog After Midnight With Vsby 1 To 3 Nm. |
| Tue...Sw Winds 5 To 10 Kt, Increasing To 10 To 15 Kt With Gusts Up To 20 Kt In The Afternoon. Seas 3 To 4 Ft. Wave Detail: S 3 Ft At 8 Seconds. Patchy Fog In The Morning With Vsby 1 To 3 Nm. |
| Tue Night...Sw Winds 10 To 15 Kt, Increasing To 15 To 20 Kt After Midnight. Seas 4 To 6 Ft. Wave Detail: S 5 Ft At 7 Seconds And Se 1 Foot At 9 Seconds. |
| Wed...Sw Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 5 To 6 Ft. Wave Detail: S 5 Ft At 8 Seconds. A Chance Of Showers In The Afternoon. |
| Wed Night...Nw Winds 10 To 15 Kt With Gusts Up To 25 Kt. Seas 4 To 5 Ft. Wave Detail: Sw 5 Ft At 7 Seconds And Nw 2 Ft At 3 Seconds. |
| Thu...Nw Winds 10 To 15 Kt With Gusts Up To 25 Kt. Seas 3 To 4 Ft. Wave Detail: Sw 4 Ft At 7 Seconds And Nw 2 Ft At 3 Seconds. |
| Thu Night...Nw Winds 10 To 15 Kt With Gusts Up To 20 Kt, Diminishing To 5 To 10 Kt After Midnight. Seas 2 To 3 Ft. |
| Fri...W Winds 5 To 10 Kt, Becoming Sw 15 To 20 Kt In The Afternoon. Seas 2 To 4 Ft. |
| Fri Night...W Winds 10 To 15 Kt, Becoming Nw 5 To 10 Kt After Midnight. Seas 2 To 4 Ft. |
| Sat...N Winds Around 5 Kt, Becoming S In The Afternoon. Seas Around 2 Ft. |
| Sat Night...S Winds 5 To 10 Kt. Seas Around 2 Ft. |
| Area Forecast Discussion National Weather Service Caribou ME 1013pm EDT Monday May 18 2026 .WHAT HAS CHANGED... - 10:13PMAdjusted POPs across Northern Maine with isolated to scattered showers developing. Monitoring a line of Thunderstorms crossing the St. Lawrence River in Quebec that will track ESE into Western New Brunswick and just north of the St. John Valley potentially skimming past the valley. Canadian Doppler Radar (CASVD) has a good look at this activity and there is a tail developing which may bring showers and perhaps a strike or two of lightning so made adjustments for the Thunderstorm activity in the grids. Potential arrival time for the Fort Kent to Madawaska region is between 11PM and Midnight. No other major changes. .KEY MESSAGES... 1) Warm to very warm with a chance for thunderstorms Tuesday and Wednesday afternoon. A few stronger storms are possible. 2) Below average temperatures are expected Thursday and Thursday Night. Near freezing temperatures are possible early Friday morning across the north, which may require actions to protect vulnerable plants. KEY MESSAGE 1... Warm to very warm with a chance for thunderstorms Tuesday and Wednesday afternoon. A few stronger storms are possible. KEY MESSAGE 1 DESCRIPTION... A little shortwave ahead of a larger trough will drape a warm front over the area that moves north through the day Tuesday. This warm front will bring warm temperatures and instability. Some cloud cover could prevent increased daytime heating which could limit convection. Thunderstorm chances are highest in central and south Maine. Storms may contain gusty winds and potentially small hail and lightning. The risk of a tornado cannot be ruled out. The models have significantly slowed down the progression of the cold front through the region, with it now forecast to move through mainly on Wednesday night. This is due to the front being almost parallel to the winds aloft as well as subsidence under the ridging exiting to the east on Wednesday. As a result, Wednesday likely will be the warmest day of the week across most of eastern and south central Maine. Because of this, models are now keying on convection firing mainly along/just north of the sea breeze front over Downeast Maine and into the Bangor region. With around 1000 J/kg of CAPE, 40-50kt of Bulk Shear, could see strong to locally severe storms across this region, with the main threat being strong gusty winds and hail. The tornado threat remains non- zero, with Energy Helicity Index of 0.5 to 1, 0-3km SRH 100-175 m2/s2 and 0-1km SRH 50-100 m2/s2. However the threat is much lower than on Tuesday. Also of note on Wednesday is that the winds should be rather gusty with gusts of 30-35 mph, with some peak gusts to around 40 mph across the Saint John Valley. Highs on Wednesday should run 15-20 degrees above normal. With Dewpoints peaking out around 60, and falling off in the afternoon, this should limit apparent temperatures to the upper 70s to lower 80s across most of eastern and central Maine, with low-mid 70s across the North s. KEY MESSAGE 2... Below average temperatures are expected Thursday and Thursday Night. Near freezing temperatures are possible early Friday morning across the north, which may require actions to protect vulnerable plants. KEY MESSAGE 2 DESCRIPTION... NW flow in the low levels advects in a much cooler air mass into the region Thursday into Thursday night, as Canadian High pressure builds in from the northwest and west. This high then builds over the area through Friday night. The result will be lows running 5-10 degrees below normal both nights. This should result in frost mainly across Northern Maine. Zones 2, 5, 6, 10, 11, 31 and 32 get added to the frost freeze program on May 21, so a frost advisory could be needed for at least part of that area on both nigheights if current forecast trends hold. Marine Winds stay below SCA (Small Craft Advisory) criteria Monday night, with some gusts of 25 kt on outer waters Tuesday out of the southwest. Some fog is possible Monday night. Rain showers and some thunderstorms are possible on Tuesday. Marginal Small Craft Advisory seas around 4 to 6 feet are possible over the coastal ocean waters Tuesday night. Wave heigheights to around 5 to 7 feet along with gusts up to 25 kt are possible across the outer waters. Small Craft conditions are likely across the coastal waters Wednesday through Thursday, with gusts of 25-30kt and seas of 4-6 ft over the outer waters during this time frame as well. From Thursday night through Saturday, sub-SCA (Small Craft Advisory) conditions are predicted for the coastal waters and winds less than 25 kt and seas of 5 ft or less are forecast for the outer waters. There is a small chance for some strong thunderstorms over the coastal waters Wednesday afternoon and early Wednesday evening. Sea surface temperatures remain very cold, but are beginning to moderate into the mid 40s. NOAA Caribou ME Office - Watches - Warnings - Advisories ME... Air Quality Alert from 10am to 10pm EDT Tuesday for MEZ029- 030. Marine None. |
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