Area Forecast Discussion
Issued by NWS Burlington, VT

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329 FXUS61 KBTV 202042 AFDBTV Area Forecast Discussion National Weather Service Burlington VT 342 PM EST Fri Jan 20 2017 .SYNOPSIS...
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Rather quiet weather continues for the North Country through the weekend with cloudy skies mild temps and a chance of some wintry mix. Moving into next week brings a more active period of weather Monday night into Tuesday with another snow/wintry mixed/rain system impacting the area. After this system, temps remain mild to go along with another couple chances for some rain/snow showers through the later half of next week.
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&& .NEAR TERM /THROUGH SATURDAY/...
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As of 338 PM EST Friday...Conditions remain rather quiet to start the period through this evening with persistent low level cloud cover trapped under a subsident inversion. A few areas in Northern NY and just west for the Greens have seen some clearing but overall most locations do not look like they`ll break out today even with the inversion weakening. Moving into tonight a rather weak impulse with some very light and spotty precipitation will move in from the southwest. There is some concern with the potential for some -fzra/-fzdr during the early morning hours on Sat for parts of the St Lawrence Valley, the Adirondacks and the Southern Greens as temps dip below freezing. That being said, warm air aloft that moves in is also rather weak, coupled with low and sparse QPF amounts across the area looks to have very minor impact overall for the morning. FRAM model looked to be a bit over done, so after scaling back, the Dacks look to see only about 0.01"-0.02" with other locations seeing even less than that. Moving through Saturday, temps look to warm and while the slight chance for precipitation continues, most looks to be rain in the valleys, snow in the higher elevations and a small window again for freezing precipitation for the Eastern slope of the Greens right at sunrise before temps warm there too and any chance switches to rain. The airmass overall has little chance and will see overnight temps in the upper 20`s to mid 30`s and then see highs in the lower 40`s to upper 30`s for Saturday.
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&& .SHORT TERM /SATURDAY NIGHT THROUGH SUNDAY NIGHT/...
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As of 338 PM EST Friday...Saturday night will see ridging return for the second half of the weekend with rather quiet conditions for Saturday night and into Sunday. An abundance of low level moisture looks to again become trapped under a low level inversion leading to cloudy conditions Saturday night through Sunday. Late Sunday night will see the edge of next system move in as snow begins to move into the area at the very end of the period.
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&& .LONG TERM /MONDAY THROUGH FRIDAY/...
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As of 338 PM EST Friday...Active period of weather is expected Monday into Tuesday with upper trough lifting up across the region during this time period. Thermal profile will be very interesting with high pressure building down into the region Monday morning and bringing colder air down into the lower levels. However...throughout the day low level thickness values will be a bit on the warm side. This may set the stage for some mixed precipitation at the onset of this event with snow and sleet before seeing a trend towards rain on Tuesday. Still some timing issues with the onset of precipitation as it appears it will be more in the Monday night into Tuesday time period. For now have kept things snow or rain for now...but system will need to be monitored for sleet or freezing rain potential. Strengthening pressure gradient will also be taking place Monday into Monday night from the east and southeast. This will create some downsloping conditions to limit precipitation...but also increase the potential for stronger winds due to the southeast component allowing for some gap winds. Upper trough lifts northeast of the area Tuesday night allowing for precipitation to taper off. Flow aloft quickly becomes southwest on Wednesday with general upper trough gradually sagging down into the region. This will keep a chance of showers around for the remainder of the week...but temperatures are still in the 30s so looking at some rain or snow showers. Eventually some cooler air moves in right at the end of the week.
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&& .AVIATION /21Z Friday THROUGH Wednesday/... Through 18Z Saturday...Widespread MVFR and IFR ceilings will exist through the period. There will also be periods of LIFR ceilings between 03z and 14z. Visibilities will primarily be VFR...but lower into the MVFR and IFR categories after 00z and persist through much of the remaining period. The only concern for precipitation will be the potential for light freezing drizzle at KMSS between 06z and 14z. Winds will be under 10 knots through the period. Outlook 18Z Saturday through Wednesday...Extensive cloud cover will persist Saturday afternoon through much of Sunday with a continuation of the MVFR/IFR ceilings and VFR/MVFR visibilities. Widespread precipitation will eventually move into the region later Monday and especially Tuesday for continued MVFR and IFR ceilings and in this case MVFR and IFR visibilities as well. Watch for breezy southeast downslope winds on Monday... especially at KRUT. && .BTV WATCHES/WARNINGS/ADVISORIES... VT...None. NY...None. && $$ SYNOPSIS...MV NEAR TERM...MV SHORT TERM...MV LONG TERM...Evenson AVIATION...Evenson

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