NEAR TERM /UNTIL 6 AM THURSDAY MORNING/
1145 PM Update... Clear conditions persist over the region with radiational cooling ongoing. Some valley fog is already beginning to form though as seen on latest satellite imagery with Keene at 3 mile visibility. This fog will continue to develop through the overnight hours with temperatures cooling into the 40s in most locations.

Previously...
710 PM Update... Minor changes to reflect latest observational trends. Another night of strong radiational cooling is expected but the combination of higher dew points than 24-hrs ago and some passing high altitude clouds should prevent most places from falling below the 40 degree mark.

Previously...
High pressure will bring tranquil weather this afternoon.
Current satellite imagery shows a mostly clear sky over New Hampshire and Maine, with a few clouds in and around the mountains. A sea breeze will also help keep temperatures a little cooler along the Maine coastline.

High pressure will remain overhead tonight and should allow for calm winds and radiational cooling. Temperatures will cool considerably tonight, but should not be as cold as last night. Fog is expected along the Connecticut River Valley and in and along the upper Androscoggin.

SHORT TERM /6 AM THURSDAY MORNING THROUGH FRIDAY/
Pleasant and fair weather continues through the day and evening tomorrow. Unsettled weather along the Southeast US coast tomorrow night will bring some low clouds into southern New England and over the Gulf of Maine. In conjunction with calm winds over land and light southwesterly winds, some patchy fog across the Midcoast is likely early Friday morning. Radiational cooling and calm winds could bring some fog back into the CT River Valley for Friday morning as well.

LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/
Overview: Outside of a quick and weak shortwave bringing the chance of showers and rumble of thunder Friday, a return to dry weather is expected next week. High pressure will again influence much of the weather for the region with a gradual warming trend each day in the long term forecast.

Details: Upper level embedded shortwave will pass through northern New England Friday as a ridge builds to the west. This will bring the chance for afternoon showers and a slight chance of thunder to mainly interior and foothill locations. While there is more confidence in scattered showers, thunder may be limited due to dry profiles and poor forcing for storms to battle entertainment. That said, guidance does favor fairly deep instability in the afternoon leading to enough confidence to mention the slight chance of pulse type storms inland.

Shower threat decreases with the loss of daytime heating into the overnight hours. As the ridge settles into the region late weekend, expect the airmass to moderate with warming temperatures into early/mid next week. As weak onshore flow remains in the region during the high’s passage, don’t expect overnight lows to fall too much even considering light winds and clear skies.

AVIATION /04Z THURSDAY THROUGH MONDAY/
Short Term...
Mostly VFR is expected across northern New England. Tomorrow morning, some restrictions at LEB and HIE are likely due to the development of fog. Fog should lift across the CT River Valley by 13Z. VFR and mostly clear skies are expected through the rest of the day tomorrow, with more fog restrictions possible on Friday morning at RKD, HIE, LEB.

Long Term...Generally VFR into the extended forecast, with overnight fog in valley locations. There will be a period of lower ceilings, perhaps MVFR/IFR Friday night as a boundary passes through. SHRA will be possible during Friday afternoon, with a low chance of TS across interior terminals of Maine and central NH.

MARINE
Short Term...
Light southwesterly winds and seas of 2-3ft are expected this afternoon through Friday morning.

Long Term...Conditions remain below SCA. Through much of the period, expect a strong surface inversion to mitigate wind gusts and thus wind wave. As far as systems go, a weak cold front will approach and cross the waters Friday into Friday night. High pressure then builds into the area for late weekend/early next week.

GYX WATCHES/WARNINGS/ADVISORIES
ME...None.
NH...None.
MARINE...None.