Area Forecast Discussion
Issued by NWS Burlington, VT
Issued by NWS Burlington, VT
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056 FXUS61 KBTV 191153 AFDBTV Area Forecast Discussion National Weather Service Burlington VT 653 AM EST Wed Nov 19 2025 .SYNOPSIS... Clear and calm conditions will continue today and into tomorrow as high pressure persists overhead. Some chances for showers returning Friday in association with a fast moving front. Seasonable late November conditions will resume for the rest of the weekend followed by another quick moving system on Monday that will be the start of several chances for precipitation next week. && .NEAR TERM /THROUGH THURSDAY/... As of 653 AM EST Wednesday...Temperatures are nearly 10 to 20 degrees below normal in portions of the Adirondacks and central Vermont as strong radiational cooling is taking place this morning. Saranac Lake has reached as low as 3F this morning, which at a quick glance at the rest of the country, is the coldest point in the lower 48. Temperatures areawide are into the teens to near 20, which will play a role in our highs today given we are quite low to start the day. Some valley freezing fog developed overnight in portions of the Adirondacks, Connecticut River Valley, and near Montpelier. The freezing fog will be fairly short lived and limited spatially. Morning commuters may have to scrape some frost or ice off their windshields this morning, but no additional impacts are expected. Lower clouds have also pushed into the St. Lawrence Valley this morning which should remain for at least a few hours before lifting by late this morning as temperatures slowly rise. Previous Discussion...High pressure overhead today will continue a recent dry and seasonably cool trend. General zonal flow will keep temperatures today relatively seasonable with highs in the mid to upper 30s with some low 40s across southern Vermont. Westerly winds will be light only up to 5 mph. While not quite as clear as yesterday, numerous breaks in the clouds will allow most of the area to be mostly sunny with a few terrain driven cumulus over the adirondacks and northern Greens. The best chance for widespread blue sky will be across portions of Rutland and Windsor Counties in Vermont. While some moisture associated with a transient low moves across the Mid-Atlantic this morning and afternoon, northerly flow aloft will keep any shower activity well to our south out of the region. Clouds will be on the increase tonight as our flow pattern becomes a little more southwesterly drawing in some higher clouds from a developing weak system across the Central Plains. Another somewhat decent setup for radiative cooling looks possible tonight with calm winds. However, some increased cloud cover will limit cooling to the levels we will see this morning. Albeit tonights lows will fall into the mid to upper teens to low 20s. Thursday will be more cloudy than today with a few breaks possible in southern Vermont late Thursday. Temperatures Thursday will continue to be on the rise with highs in the upper 30s to low 40s. && .SHORT TERM /THURSDAY NIGHT THROUGH FRIDAY/... As of 100 AM EST Wednesday...Cloud cover associated with an approaching fast moving frontal system will keep temperatures Thursday night from falling too far with values in the low to mid 20s and near 30 in the Champlain Valley. Precipitation chances will increase by sunrise Friday morning. With temperatures still beginning to rebound with weak diurnal heating, some of the precipitation may initially fall as snow, especially in the mountains. A wintry mix cannot be ruled out as some global models still show model soundings that fluctuate about the 0C line, and depict some glaze potential in the Adirondacks Friday morning. Any wintry precipitation will solely be driven by surface temperatures as temperatures aloft will be warming above 0C with waa from the southwest. As warm air surges north, any showers will quickly change over to all rain through the day Friday. It will take a bit more time for the mountains to fully switch over, however, snow level forecasts show even mountain summits may change over to all rain for a period of time. A split in the jet stream will help to limit the overall precipitation amounts Friday, with a more scattered feel to the precipitation. A high-PoP, low QPF setup looks more reasonable than a full widespread wetting rain. The bulk of the moisture looks to be wrapped up into a developing low across the Mid-Atlantic in Virginia and Maryland where a secondary jet streak looks more favorable. Showers will begin to quickly taper off and become more confined to the upslope regions and Northeast Kingdom by late Friday. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... As of 100 AM EST Wednesday...Unremarkable weather is expected through this period associated with neutral teleconnections and a split upper air pattern with open waves that will limit moisture or temperature advection. Seasonably cold air, modest winds, and at least partial sunshine, should support outdoor activities, such as early winter season sports. Broad cyclonic flow will be present, but unlike last week shortwaves will mainly stay well to our north. When they graze our area, some high elevation snow showers and valley rain showers will become possible, with slightly greater chances late Sunday and again Monday night. Temperatures will trend slightly warmer each day from Saturday through Monday, with highs edging from slightly below to slightly above normal for this time of year. Temperatures are relatively uncertain for Tuesday, although general consensus is for highs coming in a little lower than on Monday. The cooler conditions would probably lead to slightly higher chances for snow showers than any other day of this period. Relatedly, probabilities for only an inch of snowfall from Friday night through Monday evening is as high as 40% in the northern Green Mountain summits, and is about the same or slightly greater in just the Monday night to Tuesday evening period. The more interesting weather early next week will be over the southern portion of the US, as a closed low over the Southwest ejects eastward with Gulf response and an intensifying jet streak that should help intensify a low pressure system to our south. As that system moves northeastward, it will become our next chance for significant weather, likely in the form of rain given lack of polar air interaction, possibly as early as Tuesday night. && .AVIATION /12Z WEDNESDAY THROUGH SUNDAY/... Through 12Z Thursday...Primary issue is morning fog and low stratus affecting MPV and MSS, and possibly SLK, early this morning. The eastward advection of a 200 to 500 foot cloud layer from the St. Lawrence River Valley has overspread MSS with duration potentially a few hours before it thins enough to finally mix out. It is unclear how this pattern will affect SLK where a fog bank has been present causing intervals of LIFR but where conditions are currently VFR, but anticipate at least a low chance of additional fog at the terminal. Finally, at MPV a more typical radiation fog is in place and climatology would suggest a burn off time between 14 and 15Z. However, leaned towards a somewhat faster improvement time considering how late in the night the fog developed. Beyond the localized fog/low stratus, mainly VFR conditions will continue through the period with high pressure and associated light winds, generally west/northwest, and mainly terrain driven after 21Z. Likelihood of more fog tonight is lower with more cloud cover expected to roll in from the west, but greatest at SLK (55-74% chance of at least an interval of IFR conditions between about 00Z and 06Z). Outlook... Thursday: VFR. NO SIG WX. Thursday Night: VFR. Chance RA, Chance SN. Friday: Mainly MVFR, with areas VFR possible. Chance SHRA. Friday Night: Mainly MVFR, with areas IFR possible. Chance SHRA. Saturday: Mainly VFR, with local IFR possible. NO SIG WX. Saturday Night: Mainly VFR, with areas MVFR possible. NO SIG WX. Sunday: Mainly VFR, with local MVFR possible. Slight chance SHRA, Slight chance SHSN. && .EQUIPMENT... NOAA Weather Radio station WXM-44, transmitting from Mt. Ascutney, Vermont, on frequency 162.475 MHz is non-operational at this time. NWS technicians have diagnosed the problem, but repairs will likely not be able to occur for quite some time due to circumstances beyond our control. Therefore, the time of return to service is currently unknown. The following NOAA Weather Radio transmitters may be able to provide service during this outage: WWG 50 from Burke Mtn, VT at 162.425 MHz and WNG 546 from Hanover, NH at 162.525 MHz. && .BTV WATCHES/WARNINGS/ADVISORIES... VT...None. NY...None. && $$ SYNOPSIS...Danzig NEAR TERM...Danzig SHORT TERM...Danzig LONG TERM...Kutikoff AVIATION...Kutikoff EQUIPMENT...Team BTV