Area Forecast Discussion
Issued by NWS Burlington, VT

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722 FXUS61 KBTV 181857 AFDBTV Area Forecast Discussion National Weather Service Burlington VT 157 PM EST Wed Jan 18 2017 .SYNOPSIS... Plenty of clouds will persist over the area tonight through Friday. Some light precipitation is also possible tonight into the first part of Thursday, mainly some light rain or light snow...but there may also be some light freezing drizzle across part of northern New York and northern Vermont. The clouds will also keep above normal temperatures over the region through Friday as well. && .NEAR TERM /THROUGH THURSDAY/... As of 157 PM EST Wednesday...Plenty of fine details for the tonight through Thursday time period. For tonight...plenty of low level moisture will exist over the region along with areas of fog as satellite imagery shows plenty of clouds upstream headed our way. The warmer temperatures over the fresh snowpack should also enhance the potential for some fog and have included for the entire area. Weak shortwave trough moves across eastern Canada tonight and could see some light snow over the area later tonight...mainly over the northern and central sections of Vermont. Any accumulations would be less than an inch. Of note however is the loss of ice in the clouds...especially over northern New York tonight. This would set the stage for some light freezing drizzle and have included in the forecast. On Thursday...looking at plenty of cloud cover all day and with upper ridge building in...low level inversion strengthens to keep clouds and some fog in over the area. As will be the case tonight...warmer air over fresh snowpack will also help enhance the potential for low clouds and fog over the area. Will keep the idea of areas of fog going for Thursday with highs in the 30s to around 40. In addition...areas over northern Vermont may have a little light snow early...but ice goes away in the clouds and some light freezing drizzle may occur in this area as well. Drier air finally moves in during the afternoon hours on Thursday. && .SHORT TERM /THURSDAY NIGHT THROUGH FRIDAY/... As of 314 AM EST Wednesday...Generally looking at improving conditions for the Thursday/Friday timeframe with some lingering upslope light rain/snow showers focused over the high terrain diminishing Thursday, and strong 500mb ridging building in aloft for Thursday night and Friday, offering dry conditions to end the work week. Even though strong subsidence will be shifting in with the ridge, forecast soundings are indicating abundant moisture trapped beneath a low-level inversion holding tough through much of Friday and potentially longer into the weekend. Thus, have adjusted sky cover to indicate cloudier skies and subsequently lower temperatures slightly with highs both days in the mid/upper 30s and lows Thursday night in the mid 20s to low 30s. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... As of 314 AM EST Wednesday...Aforementioned upper ridge and surface high pressure continue to dominate the North Country`s weather going into the weekend with decaying shortwave energy shifting out of the central CONUS into the Ohio Valley falling apart as it hits the ridge and providing nothing more than some clouds. Subsidence aloft looks to finally win out over low level moisture as well so looking at partly cloudy skies through the weekend along with above normal temperatures in the upper 30s to low 40s. Next potential system looks to impact the region early next week as a shortwave trough pulling east out of the lee of the Rockies Saturday night develops a strong surface low over the southeast states Sunday, then tracks northeastward along the east coast during the Monday/Tuesday timeframe. Ptype could be an issue with this one with blocking high pressure in place over Nova Scotia keeping low levels close to or below freezing, especially east of the Green Mountains Monday evening, but eventually a strong low/mid level jet pushes a warm front through the region Monday night transitioning precip to rain. At least that`s what the models are telling us now, but there`s lots of time for things to change so stay tuned. For certain though, temperatures look to remain very mild by late- January standards with highs continuing to push into the 40s, and lows in the 20s/30s. && .AVIATION /19Z Wednesday THROUGH Monday/... Through 18Z Thursday...A wide range of conditions exists across the area this afternoon with MVFR to LIFR ceilings and IFR to VFR visibilities. Unfortunately these conditions will continue to be rather variable through about 00z and then there will be an overall trend toward lower ceilings and visibilities during the overnight and morning hours on Thursday. During this time period were should see fairly widespread IFR and LIFR ceilings and IFR to MVFR visibilities. Other than some brief snow showers there may be some light freezing drizzle tonight...especially at KMSS and KSLK. Winds will trend toward light and variable at all locations through 00z and remain there for the remainder of the period. 18z Thursday - 18z Friday - dry weather is expected but the potential for low clouds and fog creating MVFR and IFR conditions will exist during this period. 18z Friday through Monday - VFR conditions are expected through the period. && .BTV WATCHES/WARNINGS/ADVISORIES... VT...None. NY...None. && $$ SYNOPSIS...Evenson NEAR TERM...Evenson SHORT TERM...Lahiff LONG TERM...Lahiff AVIATION...Evenson is the U.S. government's official web portal to all federal, state and local government web resources and services.