


Area Forecast Discussion
Issued by NWS Burlington, VT
Issued by NWS Burlington, VT
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844 FXUS61 KBTV 011134 AFDBTV Area Forecast Discussion National Weather Service Burlington VT 734 AM EDT Mon Sep 1 2025 .SYNOPSIS... After a period of cooler days, warmer weather is expected to open the month of September. A few scattered showers will be possible on Tuesday, but better chances for more widespread rain will arrive Thursday evening into Friday ahead of a large upper low. In addition to wetting rain, breezy conditions will be possible Thursday and Friday, especially in the Champlain Valley. && .NEAR TERM /THROUGH TONIGHT/... As of 209 AM EDT Monday...Picture perfect weather is on tap for Labor Day as we remain under the influence of surface high pressure. This morning`s valley fog will gradually lift after sunrise, giving way to sunshine. High clouds will spread northward through the day, but expect they should be thin enough to allow at least some sun through. It`ll be another day with light winds, and highs should be a few degrees warmer than yesterday; temperatures will top out in the mid 70s to low 80s. Quiet weather continues tonight. Increasing clouds should help limit radiational cooling and any valley fog development overnight. Lows will range from the upper 40s to mid 50s. && .SHORT TERM /TUESDAY THROUGH WEDNESDAY/... As of 209 AM EDT Monday...High pressure will continue to dominate at the surface on Tuesday, but a weak upper low and associated cold pool will drift northward across western New England and New York during the daylight hours. Forcing will be weak and CAPE minimal at 500 J/kg or less. Still, moisture should increase just enough to allow isolated to widely scattered showers to develop, with some assistance from orographic effects and/or lake boundaries. A few rumbles of thunder can`t be ruled out but should remain isolated at most. Any showers that do develop will quickly dissipate toward sunset as daytime heating is lost. All in all, expect a vast majority of our region to miss out on rainfall. Highs will be similar to today. Clouds should mostly dissipate Tuesday night, and expect there could be another round of patchy valley fog, especially where any showers are able to occur. Lows will be in the mid/upper 40s to mid 50s. Dry weather continues on Wednesday. Tuesday`s weak upper low will open up and translate eastward as a weak shortwave, skirting along the international border. The main impact from this feature should just be partly to perhaps mostly cloudy skies, but a few rain showers can`t be ruled out in northern areas. It`ll be another day with highs in the mid 70s to low 80s, but we`ll see a little more wind than previous days, owing to a tightening pressure gradient ahead of our next system approaching from the west. && .LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/... As of 209 AM EDT Monday...A deep trough will build into the region for late in the week, bringing cooler conditions and some shower chances. The most widespread rainfall will occur with the initial cold front that looks to move through in the Thursday night into Friday time frame. Afterword, there will be more fronts and shortwaves that pivot around this trough that will bring additional rounds of showers. Despite this, there will be large breaks in the rain and any hydro concerns are very low at this time. GEFS/EPS/CAN ensemble probabilities of more than an inch of rain in twenty-four hours are only around ten percent, with each individual ensemble having similar probabilities. The notable thing about this trough will be the colder air aloft, with 850 mb temperatures looking to range between three to five degrees celsius. Ridging will build in on the backside but cool surface high pressure will remain in place going into next week. && .AVIATION /12Z MONDAY THROUGH FRIDAY/... Through 12Z Tuesday...Any remaining fog/low clouds are expected to lift within the next two hours and VFR conditions will then persist for the rest of the day. Patchy fog will develop again tonight, but it should be less widespread than last night. The most likely places to see fog are SLK and MPV but it would likely be for a shorter duration than last night and may move in and out a few times. Winds will generally be light and terrain driven today and tonight. Outlook... Tuesday: VFR. Slight chance SHRA, Slight chance TSRA. Tuesday Night: VFR. NO SIG WX. Wednesday: VFR. NO SIG WX. Wednesday Night: VFR. NO SIG WX. Thursday: VFR. Slight chance SHRA. Thursday Night: Mainly VFR, with local MVFR possible. Likely SHRA, Slight chance TSRA. Friday: Mainly VFR, with areas MVFR possible. Likely SHRA, Slight chance TSRA. && .BTV WATCHES/WARNINGS/ADVISORIES... VT...None. NY...None. && $$ SYNOPSIS...Hastings NEAR TERM...Hastings SHORT TERM...Hastings LONG TERM...Myskowski AVIATION...Myskowski