Port Clyde ME to Cape Elizabeth ME Marine Forecast
|Tonight...Sw Winds 10 To 15 Kt With Gusts Up To 20 Kt, Diminishing To 5 To 10 Kt Late This Evening And Overnight. Seas 2 To 3 Ft. A Slight Chance Of Snow Showers Early This Evening. A Chance Of Snow Showers With A Slight Chance Of Showers Late. Vsby 1 To 3 Nm Early This Evening, Then 1 To 3 Nm Late.|
|Fri...Nw Winds 5 To 10 Kt. Seas Around 2 Ft In The Morning, Then 1 Foot Or Less.|
|Fri Night...Nw Winds 10 To 20 Kt With Gusts Up To 25 Kt. Seas 1 Foot Or Less, Then 2 To 3 Ft After Midnight.|
|Sat...Nw Winds 15 To 20 Kt, Increasing To 20 To 25 Kt In The Afternoon. Seas 2 To 4 Ft.|
|Sat Night...Nw Winds 20 To 25 Kt With Gusts Up To 35 Kt. Seas 3 To 5 Ft.|
|Sun...Nw Winds 20 To 25 Kt With Gusts Up To 35 Kt. Seas 3 To 5 Ft.|
|Sun Night...Nw Winds 15 To 20 Kt With Gusts Up To 30 Kt. Seas 2 To 4 Ft.|
|Mon...Nw Winds 10 To 20 Kt. Seas Around 2 Ft.|
|Mon Night...N Winds 10 To 15 Kt. Seas Around 2 Ft.|
|Tue...N Winds 10 To 20 Kt. Seas Around 2 Ft.|
|Tue Night...N Winds 15 To 20 Kt. Seas 2 To 3 Ft.|
| Area Forecast Discussion|
National Weather Service Gray ME
424pm EST Thu Jan 21 2021
Pockets of snow showers will be the rule later through Saturday with enhancement in the mountains and the Mid-Coast as a weak are of low pressure drops out of southern Canada. The weekend will be noticeably colder and blustery with breezy NW winds Saturday into Sunday. Winds will relax with moderating temperatures Monday. A southern stream system will approach Tuesday although this system looks to pass to our south with southern areas having the best chance to see some light snow.
Near Term - Until 6am Friday Morning
Impacts: Brief reductions in visibility possible in any snow showers through this evening. Cloud also lead to slick roads.
There is some light snow ongoing for many locations this afternoon, but unlike yesterday afternoon, it's been less showery and more stratiform in nature. Regardless, snowfall amounts through tomorrow morning will remain on the lighter side, generally less than an inch for most with locally higher amounts possible in the Whites.
As this shortwave rotates through the region this evening, any remaining snowfall will quickly come to an end outside the mountains. However, another system will approach the region tonight and bring another round of light snow to much of the region, primarily in the early morning hours. Again, amounts will be very light, ranging from a dusting to a few tenths outside of the mountains to closer to an inch in the mountains. Temperatures will be a bit warmer than last night, ranging from the lower to mid teens north to the mid 20s south.
Short Term - 6am Friday Morning Through Friday Night
Impacts: Brief reductions in visibility will be possible in any snow showers. Could also lead to slick roads.
A cold front associated with a weak area of low pressure will sweep through the region tomorrow, allowing snow showers to continue through the day. The best chances will remain in the mountains where some orographic enhancement will help things along. Snow showers will linger through Friday night in the wake of the cold front. Do want to mention the potential for heavier amounts on the Midcoast due to the development of an inverted trough; forecast snowfall amounts are higher there already than the rest of western ME but will continue to monitor the potential for more.
Long Term - Saturday Through Thursday
The weekend will begin with a fairly zonal flow in place across eastern North America with a strong negative NAO and AO in place as a blocking high pressure remains over Greenland.
Through the weekend we move from a zonal flow across to amplification of a trough over the western portion of the continent by early next week, with an amplification in the east coast not evident until early next week. This corresponds to a increase in NAO and AO as the blocking high weakens and retrogrades allowing the circumpolar flow to once again move through our region.
For the weekend we start out with high pressure to our west and departing low to our east providing a steady pressure gradient for NWly flow. This flow will continue overnight Saturday, which will keep the temperatures from dropping as low as they otherwise might have. Still in January with colder air moving in temperatures near zero across the north is expected.
For Sunday the winds decrease somewhat, and could see a few of the deeper valleys going calm Sunday night. Have trended slightly colder for temperatures in these locations, but will be highly variable with the potential for winds.
At the start of the week, ensemble guidance continues to show fairly high confidence for low pressure to develop over the Ohio river valley early next week. This low will then slide eastwards into the Atlantic. The consensus continues to be for this disturbance to remain south of our area, and thus have kept the highest Probability of Precipitation of the time period through the southern border for Tuesday into Thursday.
No concerns in the short term as winds and seas remain below SCA (Small Craft Advisory) criteria.
Long Term...NWly flow will bring SCA (Small Craft Advisory) conditions to the waters on the weekend, a low passes south of the waters early next week.
NOAA Gray/Portland ME Office - Watches - Warnings - Advisories
ME...None. NH...None. MARINE...None.