textproduct: Gray - Portland

WHAT HAS CHANGED

Update for the 12Z TAFs.

KEY MESSAGES

1. Cool conditions prevail through today with chances for snow showers, mainly in the mountains. Dry conditions are expected next week with warmer days and cool nights.

DISCUSSION

KEY MESSAGE 1 DESCRIPTION...

Multi-model consensus shows that upper level troughing will remain over Northern New England through at least early Monday but will be losing its grip. This will mean mostly cloudy skies for much of the area today with seasonably chilly temperatures. As the trough begins to depart more sunny breaks are foreseen for southern and far eastern zones later this afternoon. Mostly dry weather is likely, other than a lingering chance for mountain snow showers.

Ridging then starts to move in to begin the work week, which will lead to a gradual warming trend back to above normal temperatures. On Monday, highs will mainly range from the upper 30s to around 50 across the southeastern zones, but we will be back to widespread highs in the upper 40s to upper 50s by midweek lower 60s likely at lower elevations. With high pressure dominating, this coming week should remain dry. As of this moment consensus shows a mainly dry and warmer than normal weekend is forthcoming.

AVIATION /12Z SUNDAY THROUGH THURSDAY/

Through 12Z Monday: Mainly VFR conditions will persist for most TAF sites. The exception is at HIE where periods of MVFR ceilings will continue into tonight with brief visibility restrictions possible in light snow showers. LEB may also see period of MVFR cigs. Winds will become NW today with gusts up to 20-25 kts later this morning and afternoon before easing this evening and tonight.

Outlook:

Monday-Thursday: An extended period of VFR conditions are likely.

MARINE

A few NW wind gusts may approach 25 kts this afternoon and evening outside of the bays with seas of 2-4 ft. Otherwise, winds and seas will largely remain below SCA criteria through this week as high pressure builds across the eastern CONUS.

GYX WATCHES/WARNINGS/ADVISORIES

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