Area Forecast Discussion
Issued by NWS Burlington, VT
Issued by NWS Burlington, VT
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195 FXUS61 KBTV 081732 AFDBTV Area Forecast Discussion National Weather Service Burlington VT 1232 PM EST Fri Nov 8 2024 .SYNOPSIS... Gusty winds and scattered showers will develop today associated with a cold front passage, and stronger winds are likely to develop for most locations tonight behind the front. High pressure will provide seasonably dry and cool conditions for Saturday and most of Sunday, followed by a widespread, beneficial rain Sunday night into Monday. && .NEAR TERM /THROUGH SATURDAY/... As of 1223 PM EST Friday...Our first band of showers is slowly sliding south of the international border at this time, and the main front that will produce more widespread activity is just north of Montreal now. Our winds have started picking up, and this will continue as this frontal boundary sags south. The forecast is in good shape, and minimal changes were needed. Excerpt of previous discussion below. As the front dips south of the forecast area this evening, gusts will likely increase further to 30-40mph for a short period around midnight as the upper levels begin to dry out and mixing deepens as high pressure begins to build in. Still looking at sub advisory gusts for the most part, but given the depth of mixing a few +40mph gusts can`t be ruled out. Temps will drop rapidly this evening as well into the 20s and 30s for overnight lows, and with winds gusting through the night, it will feel more like the teens and 20s. Winds will finally begin to slacken by Saturday afternoon with skies clearing through the day. Highs will be sub-normal in the upper 30s to low 40s. && .SHORT TERM /SATURDAY NIGHT THROUGH SUNDAY/... As of 327 AM EST Friday...Quiet weather is expected for the last half of the weekend with ridging slowly crossing the area. Clearing skies and light winds will allow for chilly temperatures Saturday night; lows in the 20s are expected, with some of the usual cold spots in the Northeast Kingdom and Adirondacks likely dipping into the teens. Sunday will start out with plenty of sunshine, but clouds will increase from west to east during the day ahead of our next system. Although a few showers may make it into the St Lawrence Valley late in the day, overall the day will be dry. Highs will be in the upper 40s to mid 50s. && .LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/... As of 327 AM EST Friday...High pressure exits to the east Sunday night while an upper trough pivots along/just north of the international border. Meanwhile, a frontal boundary will cross from the Great Lakes and through our region Sunday night into Monday morning. Showers will quickly spread from west to east Sunday evening and continue across our region overnight. Lows will be in the mid 30s to mid 40s, but snow levels will remain fairly high due to a warm layer around 800mb, so the precipitation should fall as rain. The trough will move through pretty quickly, so precipitation amounts will be mostly be a quarter of an inch or less. We will see a brief break in the precipitation Monday morning once the front moves by, but expect showers to redevelop during the afternoon/evening as another upper trough and secondary cold front approach from the northwest. This second round of showers will continue Monday night into Tuesday, focusing mostly in the north and especially in the mountains as flow turns to the northwest. Some snow will be possible in the higher elevations Monday night into Tuesday morning. High pressure returns by Tuesday night, with dry weather to persist into midweek. Monday will be the warmest day of the week with temperatures warming into the 50s to near 60F, but cooler conditions return after the cold frontal passage Monday night/Tuesday. Wednesday will be dry, but uncertainty grows thereafter as models diverge with handling of our next upper trough. Have stayed close to the NBM for the end of this period given the varying model solutions. && .AVIATION /18Z FRIDAY THROUGH WEDNESDAY/... Through 18Z Friday...A mix of VFR and MVFR conditions are expected the next several hours. Ceilings at KSLK remain MVFR, but are around 4000 ft agl for most. Little change is expected, with a broken band of showers approaching KPBG and KEFK, and then more numerous shower activity that will shift south between about 22z and 02z. Any activity later in the evening will be more likely to decrease visibility, and where it is cold enough, may mix in with snow, though temperatures will remain above freezing preventing any from sticking. Winds have increased to 8 to 14 knots with gusts 20 to 26 knots out of the west to west- northwest. Wind speeds will increase towards 12 to 18 knots sustained, with gusts 27 to 34 knots possible. At 2000 ft agl, west to west-northwest winds will remain around 40 to 45 knots. Any lull in winds could result in brief intervals of low-level wind shear or rough air near mountain levels. After 06z, high pressure will enter the region and shift east, allowing winds to gradually subside and trending skies clear. Outlook... Saturday Night: VFR. NO SIG WX. Sunday: VFR. Chance SHRA. Sunday Night: MVFR/IFR conditions possible. Definite SHRA. Veterans Day: Mainly MVFR, with local VFR possible. Chance SHRA. Monday Night: Mainly MVFR, with local VFR possible. Likely SHRA. Tuesday: Mainly MVFR, with local IFR possible. Chance SHRA. Tuesday Night: Mainly VFR, with areas MVFR possible. NO SIG WX. Wednesday: VFR. NO SIG WX. && .MARINE... As of 327 AM EST Friday...A lake wind advisory is in effect for gusty southwesterly winds this morning becoming strong this afternoon and evening up to 30 kts. Waves will build through the day, peaking this evening into early Saturday in the 3 to 6 foot range before diminishing Saturday afternoon. Small craft should exercise caution if heading out into the broad waters of Lake Champlain over the next 36 hours. && .BTV WATCHES/WARNINGS/ADVISORIES... VT...None. NY...None. && $$ SYNOPSIS...Lahiff NEAR TERM...Haynes/Lahiff SHORT TERM...Hastings LONG TERM...Hastings AVIATION...Haynes MARINE...