Marine Weather and Tide Forecast for New London, NH

NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/
6 PM Update...Snow showers continue in the mountains early this evening and will continue to do so overnight. A couple of flurries possible downstream of the mountains but no accums expected. Little change to the going forecast as it remains on track as compared to latest observational data.

Previously...

Latest H5 RAP13 pressure analysis this afternoon shows low pressure located over the Crown of ME with a departing sfc low over the Maritimes. Northwesterly flow is prevailing across our region with visible satellite imagery showing partly to mostly cloudy skies. Northeast radar mosaic is beginning to show some weak returns spilling south of the mountains with a few MPING reports of light snow/flurries in a few spots.

Spotty light snow/flurries will persist through early this evening south of the mountains as a vort max crosses before ending later tonight. Across the far north and the mountains themselves, unblocked upslope flow will result in more persistent light snow through tonight with an additional couple of inches of accumulation likely. Low temperatures tonight will range from around 10 above across the north with readings near 20 degrees in southern NH and along the ME coast.

SHORT TERM /6 AM WEDNESDAY MORNING THROUGH WEDNESDAY NIGHT/
High pressure will build to our west on Wednesday as low pressure meanders near Newfoundland. This will result in breezy northwesterly winds due to the lingering pressure gradient force with wind gusts up to 30 mph possible. Skies will be mainly cloudy across the north and mountains with partly sunny skies south. High temperatures will range from the teens to upper 20s from north to south. Upslope snow will gradually wane through the day as drier air works into the forecast area.

Wednesday night will feature colder temperatures with mainly clear skies south of the mountains and partly cloudy across the far north and mountains. Low temperatures be into the single digits to lower teens but wind chills will be at or below zero.

LONG TERM /THURSDAY THROUGH TUESDAY/
A weak ridge of high pressure will cross New England at the start of the extended portion of the forecast. Dry conditions can be expected Thursday and Friday to end out the work week. It will start out very cold with temperatures in the teens and 20s on Thursday followed by single numbers in many areas for lows Thursday night.

A gradual warm up will arrive Friday into Saturday as high pressure crests over the region before exiting off the coast.
12Z operational models and ensemble solutions suggest light precipitation will reach the region ahead of a strong Arctic front. This poleward advecting moisture on southerly winds will lead to scattered snow showers over the weekend and above normal temperatures.

Readings do begin to plummet behind the Arctic front during the day Sunday however. There will continue to remain timing differences in this feature as a surface low rides along it off the Northeastern coastline. In any case, strong gusty winds will follow with cold air advection and perhaps a period of snow.
A prolonged period of Arctic cold can be expected next week.

AVIATION /00Z WEDNESDAY THROUGH SUNDAY/
Short Term...Upslope clouds/-SN will continue to result in periods of MVFR restrictions at KHIE through tonight but otherwise VFR conditions will prevail through Wednesday night.
Winds will remain out of the northwest with gusts up to 25 kts at times, especially Wednesday afternoon. No LLWS is anticipated.

Long Term...Overall aviation impacts will be limited through Saturday. Gusty NW flow for remainder of TAF sites Thursday with diminishing winds becoming westerly on Friday before a brief period of SW on Saturday. A sharp front will allow for Arctic air to reenter the region beginning Sunday.

MARINE
Short Term...Northwesterly wind gusts outside of the bays up to 30 kts and seas of 2-4 ft will result in hazardous conditions to small crafts tonight. Across the bays, a gusts around 25 kts are likely Wednesday.

Long Term...A general west to southwesterly gradient will continue over the region for the long range portion of the forecast. Winds increase ahead of an Arctic front Saturday, mostly likely into SCA criteria.

GYX WATCHES/WARNINGS/ADVISORIES
ME...None.
NH...None.
MARINE...Small Craft Advisory until midnight EST Wednesday night for ANZ150-152-154.
Small Craft Advisory from 5 AM Wednesday to midnight EST Wednesday night for ANZ151-153.