textproduct: Gray - Portland

WHAT HAS CHANGED

A quiet cold morning continues across New Hampshire and western Maine. No major changes were needed for this update. Just freshened up the aviation forecast.

KEY MESSAGES

1. Cool conditions and some snow showers today transition into a warming trend by the end of the weekend.

2. Active weather is expected at the end of the week, with a storm system forecast to bring rain and potentially some light snow as well.

DISCUSSION

KEY MESSAGE 1 DESCRIPTION...

A seasonably cold airmass remains in place for today, with highs ranging from the mid 20s across the north, to the upper 30s through southern New Hampshire. The day starts off bright, but clouds increase through the afternoon hours as a weak trough crosses through northern New England. Some scattered snow showers are also likely to accompany this trough, with snow showers moving into western areas during the late afternoon hours. These gradually move eastward and slowly dissipate through the evening, but some snowflakes are likely to the coast through late evening.

Clearing then returns through the overnight hours, with lows dropping into the teens and low 20s across most of the area. High pressure moves off the Eastern Seaboard during the day on Sunday, bringing a moderating trend on southwesterly flow to the northeast. This warming trend gets underway tomorrow, with highs rebounding into the mid 30s across the north, to upper 40s across the south. 30s are also likely to hold along the MidCoast as the wind off the water remains cool.

KEY MESSAGE 2 DESCRIPTION...

A warm front associated with broad low pressure over the Great Lakes is anticipated to slowly move across the region on Tuesday. This will allow for warmer air to move in along with showery and damp conditions. The remainder of the week could remain gloomy and wet as showers continue with the aforementioned low moving eastward. Drier and potentially cooler conditions are not expected until at least Thursday.

AVIATION /12Z SATURDAY THROUGH WEDNESDAY/

Mainly VFR today, but then a period of MVFR visibilities in scattered snow showers is possible from the late afternoon across western terminals, to the evening hours along the coast. VFR then returns with clearing skies tonight, with VFR prevailing on Sunday.

Outlook:

Monday: VFR Expected.

Tuesday-Wednesday: Lower restrictions are expected with showers forecast. At least MVFR is likely.

MARINE

Generally fair conditions continue into early Sunday as high pressure builds in from the west. The high then moves off the Eastern Seaboard, bringing a chance of SCA conditions in southwesterly flow by late Sunday.

Southerly sub-SCA winds look to start next week, with winds strengthening to Gale force by Wednesday morning. Seas of 3-5ft expected Monday and Tuesday, with 6-10ft seas forecast for Wednesday.

GYX WATCHES/WARNINGS/ADVISORIES

ME...None. NH...None. MARINE...None.