textproduct: Gray - Portland

WHAT HAS CHANGED

Ocean effect snow between Brunswick and Wiscasset continues to be going strong with reports of 1.5 inches so far. Have increased PoPs and snowfall amounts for this localized area as another inch or two seems possible based on radar trends.

KEY MESSAGES

1. Besides ocean effect snow between Brunswick and Wiscasset this morning, no significant weather impacts are expected through Friday.

2. Two weak shortwaves will move through the northeast, bringing rain and snow to northern New England.

DISCUSSION

KEY MESSAGE 1 DESCRIPTION... Partly to mostly cloudy skies will prevail today as an H5 s/wv trof axis crosses New England. This trof will bring little in the way of sensible weather impacts as both forcing for ascent and moisture depth are quite limited but a stray flurry or sprinkle cannot be ruled out. High temperatures will be a few degrees warmer than yesterday with readings ranging from the 30s across the north to 40s south.

Clouds will persist tonight with some clearing south of the mountains late with low temperatures into the 20s. A few snow showers are possible across the mountains and towards the Canadian Border.

Clouds will increase from north to south on Friday as the next s/wv trof axis quickly approaches the region. A few rain or snow showers are possible late in the day from the mountains and points north but most of the area will remain dry through the daytime hours. High temperatures will range from the 40s and 50s from north to south.

KEY MESSAGE 2 DESCRIPTION...Two weak shortwaves will move from west to east across New England. The first will move into the area Saturday morning, with mainly snow expected in the mountains and north, with mostly rain expected along the coast. Snow will be heavy and wet in character, though only 1-2 inches are forecast at most where snow is expected. QPF will be light with minimal impacts expected outside of some slick roads in the interior.

Towards the end of the weekend, another shortwave moves across the region in a similar track as the previous one. A lot of model uncertainty exists with this system, with rain or snow possible around Sunday afternoon.

AVIATION /12Z THURSDAY THROUGH MONDAY/

Through 12Z Friday: VFR conditions are expected. An isolated sprinkle or flurry is possible through 15Z this morning but flight restrictions are not currently expected. Winds will be out of the S-SE at 5-15 kts. VFR conditions persist for most terminals tonight but some MVFR CIGS are possible at KHIE with SHSN. Winds will be out of the S-SW at 5-10 kts. No LLWS is anticipated through the period.

OUTLOOK: Friday...VFR in the morning, with lower restrictions in the afternoon due to rain and snow.

Saturday...IFR in the morning due to snow, return to VFR expected south of the mountains.

Sunday...IFR expected due to rain and snow.

Monday...AM IFR, possible return to VFR by end of the day.

MARINE

Seas continue to diminish and will remain below SCA criteria through Friday. A few S gusts up to 20 kts are possible at times though.

OUTLOOK: Friday + Friday night...SCA southerly winds with sub-SCA seas.

Saturday...Sub-SCA northwesterly winds with SCA seas.

Sunday...Near-SCA variable winds, with SCA seas.

Monday...SCA northeasterly winds with SCA seas.

GYX WATCHES/WARNINGS/ADVISORIES

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