Area Forecast Discussion
Issued by NWS Burlington, VT
Issued by NWS Burlington, VT
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714 FXUS61 KBTV 181152 AFDBTV Area Forecast Discussion National Weather Service Burlington VT 652 AM EST Tue Nov 18 2025 .SYNOPSIS... Persistent northwest flow and a prolonged period of upslope snow across the Adirondacks and Greens will continue through the first half of the week. Snow showers will eventually taper off on today as high pressure begins to move into the region. Drier weather moves in Wednesday and Thursday with some chances for showers returning Friday. && .NEAR TERM /THROUGH WEDNESDAY/... As of 610 AM EST Tuesday...Winds are coming down over Lake Champlain to warrant the removal of the Lake Wind Advisory. Speeds around 20kts will continue over the lake for the morning hours, but the trend will be for decreasing speeds. Otherwise, temperatures were slow to cool overnight due to most locations staying mixed; this resulted in increasing morning temperatures into the low 30s for many spots rather than mid/upper 20s. Sheltered locations did decouple, so some spots were able to radiate out more efficiently. Previous Discussion..Lingering upslope snow showers are decreasing in areal extent becoming more localized directly on slopes and over higher terrain, especially in the northern Greens. Dry air is evident aloft on water vapor imagery with high pressure beginning to move in. Subsidence associated with high pressure will win out decreasing showers further this morning with some flurries lingering over mountain tops and possibly adjacent to eastern shores of Lake Champlain. Drier conditions will prevail through mid week with temperatures running cooler than seasonal averages; highs are expected to remain primarily in the 30s warming to around 40 degrees for broader valleys by Wednesday with lows ranging from the teens to the 20s. && .SHORT TERM /WEDNESDAY NIGHT THROUGH THURSDAY/... As of 150 AM EST Tuesday...High pressure continues Wednesday night into Thursday with light winds expected. Lows are likely to be marginally cooler as skies clear. Coldest hollows could dip into the low teens (and possibly a few upper single digits should conditions align ideally - will depend on timing of cloud cover) while most other locations dip into the low/mid 20s. Clouds will be increasing Thursday ahead of the next system with flow turning southerly but remaining light. Highs will likely range in the upper 30s to low/mid 40s, comparatively mild given recent conditions, and close to seasonal averages. && .LONG TERM /THURSDAY NIGHT THROUGH MONDAY/... As of 150 AM EST Tuesday...Our break in precipitation still is on track to end on Friday as light precipitation amounts occur ahead of a cold front. While spotty mixed precipitation, including freezing rain, cannot be ruled out in localized areas in the Adirondacks at the onset, the strong consensus for this event looks like a plain rain scenario associated with fairly deep and substantial low level warming. Consensus of a low track far to our north/west, and no phasing to support secondary low formation to our south along the front, seems to limit hope for significant snow as sub-freezing air aloft rushes in behind the front late Friday. That being said, seasonably cold air will probably return (925 millibar temperatures near the 30th percentile), with some uncertainty related to the amplitude of the trough in the wake of the front. With a deepening low scenario and greater cold air advection, Friday night into Saturday could be another upslope snow shower period. Aside from that system, predictability of any additional precipitation is fairly low. Generally next weekend into early next week looks unsettled but largely unremarkable with no anomalies noted at this time with regards to temperature, precipitation, or wind in global ensemble data. As such, expect some periods of light elevation dependent snow/rain depending on storm track, a lot of cloudiness, and near normal temperatures. && .AVIATION /12Z TUESDAY THROUGH SATURDAY/... Through 12Z Wednesday...Flight conditions will continue to be driven by ceilings, which aside for PBG, are in the 700 to 3100 feet range. IFR only expected at SLK, which will continue through at least 15Z, although probabilities greatly decrease by 18Z (to near 10%), suggesting sometime in the 16-18Z period we`ll see the end of IFR conditions. Otherwise, more than other sites, EFK will be affected today by more impulses of deeper moisture and light snow showers per latest observations. It will be difficult to scour out these clouds at all terminals, especially MSS, SLK, and EFK. Blocked flow will keep intervals of BKN CIGs going at RUT and BTV, although cloud bases will be near to above 3000 feet. Little change after 00Z with lingering moisture supporting more MVFR conditions. West winds are currently 4 to 11 knots with gusts 15 to 20 knots, and these winds should peak through 16Z before gradually diminishing, especially after 00Z. Outlook... Wednesday: VFR. NO SIG WX. Wednesday Night: VFR. NO SIG WX. Thursday: VFR. NO SIG WX. Thursday Night: VFR. Chance RA, Slight chance SN. Friday: MVFR. Definite RA. Friday Night: Mainly MVFR, with local IFR possible. Chance SHRA, Slight chance SHSN. Saturday: Mainly VFR, with areas MVFR possible. NO SIG WX. && .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...Boyd NEAR TERM...Boyd SHORT TERM...Boyd LONG TERM...Kutikoff AVIATION...Kutikoff EQUIPMENT...Team BTV