Area Forecast Discussion
Issued by NWS Burlington, VT
Issued by NWS Burlington, VT
Versions:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
730 FXUS61 KBTV 071109 AFDBTV Area Forecast Discussion National Weather Service Burlington VT 609 AM EST Sun Dec 7 2025 .SYNOPSIS... A clipper system will bring widespread light snowfall this afternoon and tonight. A coating to a few inches of snow is expected. Colder conditions return for Monday and Monday night, while unsettled weather continues through much of next week. && .NEAR TERM /THROUGH TONIGHT/... As of 452 AM EST Sunday...Snow showers continue across portions of the region early this morning, with reflectivities reinvigorating a bit in the southern Champlain Valley. Webcams also indicate some flurries falling in the higher elevations of the central Greens and Adirondacks. This should dissipate as we head through the morning hours, but have gone ahead and increased PoPs in these areas just to show isolated/scattered activity through daybreak. Any snow accumulation will be light. Otherwise, based on current satellite imagery, cloud cover looks to remain fairly widespread, with any partly cloudy skies staying limited to northern VT, especially east of the Greens. Cloud cover forecast has also been updated to match these trends. Otherwise the forecast is in good shape and no other changes were needed. Previous discussion...A thin band of moderate to very briefly heavy snow showers continues to slowly sink southward across the region early this morning. It should gradually wane in intensity and coverage as it pushes through the Adirondacks and the central/southern Greens, with any snow accumulations generally an inch or less. Better chances for snow arrive this afternoon as a weak clipper low pressure system slides along the boundary. Neither forcing nor moisture are overly impressive with this system, so anticipate just light snow to overspread the area from west to east this afternoon into the evening hours. Snow persists through the first part of the overnight, but it will quickly taper to mountain snow showers as the low pushes to our east by midnight tonight. Overall snow accumulation will be 1 to 4 inches, highest in the Adirondacks and northern/central Greens. Winds will be light through the day as the low moves directly overhead, but they will increase overnight tonight as cold air advection sets up behind the low. Hence there could be a bit of blowing snow in more open areas. Temperatures will fall as well; after daytime highs in the upper teens to upper 20s, expect temperatures to drop into the single digits by early Monday morning. The combination of fresh snow cover, patchy blowing snow, and falling road temperatures could make for a slippery Monday morning commute. && .SHORT TERM /MONDAY THROUGH TUESDAY/... As of 101 AM EST Sunday...Other than a few lingering snow showers across the northern Greens and Northeast Kingdom, expect Monday to be dry under decreasing clouds. Cold air advection will continue on breezy north/northwest winds. Highs will only reach into the 10F to 20F range; when combined with winds gusting to 20 mph, wind chills will remain near to below zero for much of the day. The higher elevations will be even colder as wind chills remain below -20F. Bitterly cold conditions will continue Monday night as high pressure settles directly over the region. With fresh snow cover and light winds, radiational cooling will be optimal. The only potential snag will be increasing high clouds, but current thinking is they`ll be thin and/or patchy enough to limit their impact on overnight temperatures. Lows of -10F to +5F seem reasonable at this point, with some of our usual cold spots in the Northeast Kingdom and Adirondacks potentially approaching -15F. High pressure shifts to the east on Tuesday, making way for another clipper system approaching from the Great Lakes. Clouds will increase through the day, but the bulk of precipitation will hold off until late Tuesday afternoon. A turn toward south flow will allow temperatures to warm into the 20s, with a few spots hitting 30F. && .LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/... As of 101 AM EST Sunday...An active northwest flow longwave pattern continues through the period with several, albeit mainly weak northern stream shortwave troughs swinging through our area in the Wednesday-Sunday time frame. The strongest of these affects our region Wed/Wed evening with a climo-favored track through the SLV. As such, a mixed light rain/light snow scenario will likely unfold through these periods with latest probabilistic data, including most recent NBM runs concurring. QPF should be relatively light to modest, but a few inches of additional snowfall should be likely, especially in areas outside the broad valleys where boundary layer warming and brisk southerly flow will likely put a cap on totals. Thereafter, a general trend toward colder weather arrives for the late week time frame with on and off chances for light snow showers/flurries, most favored in the northern higher terrain. && .AVIATION /12Z SUNDAY THROUGH THURSDAY/... Through 12Z Monday...BKN/OVC VFR cigs in the 040-060 AGL range this morning to lower to MVFR with IFR visibilities at most terminals this afternoon as light snows develop in the 18-22Z time frame from west to east. Snows to taper off fairly quickly this evening in the 01-05Z time range though with lingering MVFR cigs into the overnight hours. Winds mainly light northerly at 5 kts or less through 00Z, trending northwesterly 5 to 10 kts thereafter. Outlook... Monday: VFR. NO SIG WX. Monday Night: VFR. NO SIG WX. Tuesday: VFR. Slight chance SN. Tuesday Night: Mainly VFR, with areas MVFR possible. Chance SN. Wednesday: Mainly MVFR and IFR, with areas VFR possible. Definite SN, Definite RA. Wednesday Night: Mainly MVFR, with areas IFR possible. Likely RA, Chance SN. Thursday: Mainly VFR, with areas MVFR possible. 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. Equipment malfunctions at the Colchester Reef meteorological station will likely leave it inoperable for an extended period of time. This site is not serviced by the NWS. Technicians do not currently have an estimated return to service for this station. Use extra caution when navigating the broad waters of Lake Champlain, and please contact us if you observe winds significantly deviating from the forecast. && .BTV WATCHES/WARNINGS/ADVISORIES... VT...None. NY...None. && $$ SYNOPSIS...Hastings NEAR TERM...Hastings SHORT TERM...Hastings LONG TERM...JMG AVIATION...JMG EQUIPMENT...Team BTV