Cape Elizabeth ME to Merrimack River MA Marine Forecast
| Today...W Winds 15 To 20 Kt With Gusts Up To 30 Kt. Seas 3 To 5 Ft. Wave Detail: W 4 Ft At 4 Seconds And E 2 Ft At 11 Seconds. |
| Tonight...Nw Winds 15 To 20 Kt With Gusts Up To 30 Kt. Seas 3 To 5 Ft. Wave Detail: W 4 Ft At 4 Seconds And E 2 Ft At 11 Seconds. |
| Wed...Nw Winds 15 To 20 Kt With Gusts Up To 30 Kt. Seas 2 To 4 Ft. Wave Detail: Nw 4 Ft At 4 Seconds. |
| Wed Night...Nw Winds 15 To 20 Kt, Diminishing To 10 To 15 Kt After Midnight. Seas 2 To 4 Ft. Wave Detail: Nw 3 Ft At 4 Seconds. Light Freezing Spray. |
| Thu...W Winds 5 To 10 Kt. Seas Around 2 Ft. |
| Thu Night...W Winds 5 To 10 Kt. Seas Around 2 Ft. Wave Detail: Sw 2 Ft At 3 Seconds. |
| Fri...W Winds Around 10 Kt. Seas Around 2 Ft. |
| Fri Night...Sw Winds 10 To 15 Kt, Increasing To 15 To 20 Kt After Midnight. Seas 2 To 3 Ft. |
| Sat...Sw Winds 15 To 20 Kt With Gusts Up To 30 Kt. Seas 2 To 4 Ft. A Chance Of Showers In The Afternoon. |
| Sat Night...Sw Winds 10 To 15 Kt, Becoming W After Midnight. Gusts Up To 25 Kt. Seas 3 To 5 Ft. A Chance Of Showers In The Evening With Vsby 1 Nm Or Less. |
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Area Forecast Discussion National Weather Service Gray ME 630am EST Tuesday Jan 14 2025 Synopsis A clipper system will bring chances for snow this evening and tonight, mainly in the mountains, but there is also a chance for light snow across portions of western Maine. Upslope mountain snow showers continue Tuesday and Wednesday with mostly dry and breezy conditions elsewhere. Temperatures moderate through the weekend. Near Term - Through Tonight 630amNo big changes to going forecast. Upstream radar sites depict precipitation approaching the Quebec/NH/ME border this morning and its this stream of moisture south of passing low pressure that will keep mountain light snow going today. Blocked flow currently is keeping clouds and precipitation from spilling into the foothills, but this should ease come this afternoon. Previous Progressive mid level low pressure will move northeast of central New England today. A prominent, strong jet core placed over the TN Valley to Mid-Atlantic will keep this low to the north today. Breezy west winds result, gusting around 20 mph for much of the day. The additional advection of low level moisture will keep the mention of light snow or snow showers continuing in the Whites and western ME mountains. Did increase snow ratios somewhat given ample saturation and lift in the DGZ. Ensemble probs utilizing the Cobb method do advertise periods of ratios greater than 20:1 through Wednesday. Accumulating snow will be most likely where terrain lift can assist, which should include elevations 2000' and above. Froude values rise this afternoon into the evening and isolated snow showers will be possible into the foothills and interior before retreating back to the mountains overnight. Moisture profile from the foothills to the coast and into southern NH isn't supportive of much precip, but there could be some assistance via seeder/feeder come afternoon. Snow continues in the mountains tonight as broad low pressure moves into the Canadian Maritimes. Mid level trough looks to swing through New England overnight, and this will shift winds more northwesterly as well as reinforce mtn snow. Short Term - Wednesday Mountain snow continues Wednesday, but drier continental airmass will limit Quantitative Precipitation Forecast and overall confidence in duration. This should lead to a slow taper through the afternoon. Temperatures, as a result of cold air advection, will be a couple degrees cooler than Tuesday. However, prevailing wind direction and the drier air should help bring less clouds for the coast and portions of the interior. Gradient winds keep the day breezy still. Long Term - Wednesday Night Through Monday Monday evening01z NBM is in and continues the general idea of dry weather Thu/Fri before a cold frontal passage Sat, and then possibly a coastal low passing to our south on Sun and/or Mon. This is in reasonable agreement with the rest of the guidance suite and will keep going with chance Probability of Precipitation this weekend into early next week. Previously... Overview: Broad cyclonic flow is expected through mid-week with seasonable temperatures expected. Flow turns zonal with a brief period of east coast ridging Friday into Saturday as a Hudson Bay Polar Vortex begins to dig south with an Arctic intrusion into the Upper Plains. The cold front will reach our area sometime around Sunday but forecast confidence remains low where the thermal gradient will develop and a potential wave of low pressure riding up the eastern Seaboard on the holiday next week. Impacts: No major impacts expected through this forecast period. Cold temperatures in single digits are expected Thursday and Friday morning. Watching a potential coastal low at the end of the forecast period, but confidence for any significant snowfall is still below 10% at this time. Forecast Details: Thursday the next shortwave trough moves across the region bringing another round of snow showers to the mountains, especially Thursday night as the trough axis moves overhead. Not expecting much for accumulation, but a few inches in the mountains could be possible. Warming trend starts by Friday as flow becomes zonal with westerly downslope winds off the high terrain causing some adiabatic warming and highs breaking freezing outside the mountains and foothills. Surface ridge to our south moves off the Atlantic Seaboard allowing for southwest return flow with the warmest day in weeks expected as highs could top 40 degrees near the coast and Southern NH. Cold front is expected to push the area on Sunday with some rain/snow showers across the region. Still large spread on Monday next week, but there could be a quickly developing surface low along the thermal gradient that will bring a shot of cold air. Marine Short Term SCA (Small Craft Advisory) conditions reside mainly off the NH Seacoast today, but expand northward as winds increase behind trough tonight. Wednesday will feature more widespread NW winds, which may eventually include the bays and intracoastal regions with SCA (Small Craft Advisory) conditions. Long Term SCA (Small Craft Advisory) conditions into Wednesday night at least as offshore NW winds remain strong behind a surface cold front. Another weak cold front expected on Thursday with another round of SCA (Small Craft Advisory) conditions possible with NW winds. Lighter winds on Friday with southwest winds expected on Saturday. No visibility restrictions expected. NOAA Gray/Portland ME Office - Watches - Warnings - Advisories ME...None. NH...None. Marine Small Craft Advisory from 5pm this afternoon to 6pm EST Wednesday for ANZ150-152. Small Craft Advisory until 6pm EST Wednesday for ANZ154. |
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