Port Clyde ME to Cape Elizabeth ME Marine Forecast
|Today...S Winds 5 To 15 Kt With Gusts Up To 25 Kt, Becoming E 5 To 10 Kt This Afternoon. Seas 3 To 5 Ft. Rain With A Chance Of Tstms. Vsby 1 To 3 Nm.|
|Tonight...Ne Winds 5 To 10 Kt, Increasing To 10 To 15 Kt With Gusts Up To 25 Kt After Midnight. Seas 2 To 4 Ft. A Chance Of Showers In The Evening.|
|Wed...Ne Winds 10 To 15 Kt, Becoming 5 To 15 Kt In The Afternoon. Gusts Up To 25 Kt. Seas 2 To 4 Ft.|
|Wed Night...Ne Winds 10 To 15 Kt With Gusts Up To 25 Kt. Seas 3 To 5 Ft.|
|Thu...Ne Winds 5 To 15 Kt With Gusts Up To 20 Kt, Becoming E 5 To 10 Kt In The Afternoon. Seas 2 To 4 Ft.|
|Thu Night...Se Winds 5 To 10 Kt. Seas 2 To 4 Ft. A Chance Of Showers.|
|Fri...S Winds 15 To 25 Kt With Gusts Up To 35 Kt. Seas 4 To 6 Ft. A Chance Of Showers.|
|Fri Night...Sw Winds 15 To 25 Kt With Gusts Up To 35 Kt. Seas 5 To 8 Ft. A Chance Of Showers.|
|Sat...Nw Winds 10 To 20 Kt With Gusts Up To 25 Kt. Seas 4 To 6 Ft.|
|Sat Night...Nw Winds 5 To 10 Kt. Seas 2 To 4 Ft. Winds And Seas Higher In And Near Tstms.|
|Area Forecast Discussion|
...UPDATED National Weather Service Gray ME
910am EDT Tuesday September 18 2018
Synopsis: Heavy rainfall will continue across southern New Hampshire and extreme southwest Maine today due to the remnants of Florence moving through the region. Over central and northern areas mainly dry conditions expected. The system will be fast moving and exit by this evening followed by clearing, cooler and drier air for the mid to latter part of the week as high pressure builds into the region. A more substantial cold front arrives Friday bringing more dry weather and fall like temperatures to the area.
Near Term - Until 6pm This Evening
Update...Minor changes to Probability of Precipitation and Wx with grids in pretty good shape. The major change was to Quantitative Precipitation Forecast...as rainfall rates have been intense at times across Srn NH. KGYX was overshooting the bulk of the warm cloud depth...but KBOX had a much better handle on precipitation estimates. Widespread 2+ inches estimated from dual-pol so far...with observer reports matching these fairly well...including several over 3 inches. The back edge is moving Ewd quickly...but developing convection in MA is moving NEwd and will likely clip Ern parts of the FFW in effect for Srn NH. This will including MHT/ASH as well as points E.
ORIGINAL DISCUSSION... Axis of rainfall has begun orienting itself such that southern and central portions of New hampshire will likely see the most persistent rainfall, extending eastward into southern Maine. This is occurring along and north of a developing frontal boundary extending eastward from the remnants of tropical system Florence. With a very humid air mass in place, and tropical moisture being advected into the frontal boundary, expect a solid 1 to 3 inches of rainfall within this axis before it moves offshore this evening. Although flash flooding is possible especially if some deeper convection can develop, the threat remains too low for a watch. Temperatures today will be cooler due to cloud cover and rainfall, but will still make the mid 70s in most places. Meanwhile, a cold front drops in from the north later in the day shifting winds to the north and bringing drier air in
Short Term - 6pm This Evening Through 6pm Wednesday
After the cold front moves through, expect cool and dry air to move in from the north. Some showers may linger into Tuesday night or even Wednesday morning. Temperatures will be 10 to 15 degrees colder for highs on Wednesday in the cooler air mass
Long Term - Wednesday Night Through Monday
A high amplitude ridge of high pressure builds across the eastern U.S. Wednesday night and Thu with cool and dry conditions. By Thu night into Fri a return south to southwest flow will increase after the passage of a warm front and then briefly bring a return to warmer temps and higher humidity. By Fri night a strong Canadian cold front associated with a Canadian clipper will move through the area, a few showers will accompany the front. Behind the front a large Canadian ridge of high pressure builds east from the Great Lakes across the northeast with much cooler and drier air making it feel more like fall. The cool dry conditions will last into early next week.
Short Term: Low pressure tracks across southern New England and exits through the Gulf of Maine today. Winds may occasionally gust to 20 or 25 KT but not widespread enough for a Small Craft Advisory. A cold front drops down from the north tonight with northeast winds behind it tonight into Wednesday again gusting to near 25 KT.
Long Term: Winds and seas will remain below Small Craft Advisory levels Thu into early Fri. By Fri afternoon an increasing south to southwest flow in advance of an approaching cold front will likely require a SCA. The cold front moves across the waters Fri night with Small Craft Advisory conditions possible for a time over the outer waters behind the cold front as winds become north and then northeast
NOAA Gray/Portland ME Office - Watches - Warnings - Advisories
ME...None. NH...None. MARINE...None