


Area Forecast Discussion
Issued by NWS Burlington, VT
Issued by NWS Burlington, VT
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004 FXUS61 KBTV 080105 AFDBTV Area Forecast Discussion National Weather Service Burlington VT 905 PM EDT Sat Jun 7 2025 .SYNOPSIS... After the showers move out this evening, mostly dry conditions will prevail through Monday. Temperatures will be relatively seasonable with lowering humidity. Wildfire smoke looks to linger at the surface through tomorrow. Widespread rain will occur Tuesday with the possibility for a few thunderstorms. && .NEAR TERM /THROUGH MONDAY/... As of 905 PM EDT Saturday...Forecast remains in great shape, with no updates needed. Prior discussion follows. Have a great night! Prior discussion... The stratiform rain has mostly exited southern Vermont and it will leave within the next couple hours. A few showers have developed this afternoon along a weak cold front. These will slowly move south this afternoon and evening, and a few will contain lightning. While 0-6 KM shear would be sufficient for some severe storms, with values generally in the 30-40 KT range, CAPE is weak. Cooling temperatures aloft will help create some but weak surface heating will keep values relatively low. If BTV remains dry, it will break the 10 Saturdays of measurable precipitation streak. Drier air is trying to infiltrate the region from the northwest behind the front but its progression has been quite slow. Weak surface winds are significantly limiting the advection. Ahead of this front, mixing has been very poor and it has kept surface dew points higher than forecast. While they should decline slightly this afternoon, they will probably stay in the upper 50s and 60s for most areas heading into tonight. This poor mixing has kept the Canadian wildfire smoke in place at the surface, though it has also remained a bit across parts of northern New York that have seen the drier air and better mixing. There is no reason the smoke will go anywhere tonight, and with light flow tomorrow, it will probably linger a bit through the day, though mixing should be better. Fog development is likely across parts of the region tonight as skies clear, and it will be aided by the limited mixing/drying this afternoon and plenty of condensation nuclei from the smoke. It should be most widespread across the valleys of southern and eastern Vermont. These areas have seen rain today and they should not get into the drier air moving in from the north. Outside the smoke, conditions tomorrow will be quite benign. Highs will be in the 70s for most places, and the humidity should finally be able to drop off once diurnal heating/mixing occurs. Dew points are expected to fall into the 50s and upper 40s. && .SHORT TERM /MONDAY NIGHT THROUGH TUESDAY NIGHT/... As of 416 PM EDT Saturday...After a brief period of quieter weather, precipitation chances will once again increase Monday ahead of a frontal system passing through the region. Much of region should see an increase of clouds throughout the day Monday, with the better chances for showers arriving towards the evening. Southerly flow will make for increasing moisture ahead of the frontal boundary, allowing for fairly widespread precipitation to develop. Preliminary rainfall amounts generally look to be between 0.5 to 1.0 inches, although there is still some uncertainty as to how quickly the front progresses and if any convective elements develop. WPC continues to maintain a Marginal Risk in the Excessive Rainfall Outlook across portions of the region for both Day 3 and Day 4, so trends will continue to be monitored as we closer. Temperatures on Monday and Tuesday look to be seasonable, with high temperatures climbing into the 70s area wide. Overnight lows look to be on the milder side with plenty of rain and cloud cover, with most locations in the upper 50s to lower 60s. && .LONG TERM /WEDNESDAY THROUGH FRIDAY/... As of 416 PM EDT Saturday...Unsettled and showery weather conditions look to continue into mid- week as an upper-level trough continues to meander across the region. Several shortwaves look to pivot around the upper trough, bringing chances for precipitation Wednesday into Thursday. Most of this activity looks to be more focused across the northern portion of the forecast area, especially the higher terrain. Some drier conditions may look to build in towards the end of the week with more zonal flow across the region, although it will largely depend on how quickly the upper level trough pushes eastward, with plenty of uncertainty at this time. Temperatures during this time frame look to be seasonable, with high temperatures warming into the mid 70s to near 80s later this week. Overnight low temperatures will generally be in the 50s to low 60s for much of the week. .CLIMATE... && .AVIATION /01Z SUNDAY THROUGH THURSDAY/... Through 00Z Monday...Terminals are generally VFR with the exception of MPV where haze from Canadian wildfire smoke has reduced visibilities to MVFR. Winds across the area will continue to trend towards calm by sunset. By 05Z, as the nocturnal boundary develops and sinks towards the surface, smoke/haze should trend visibilities at all sites outside of SLK/MSS towards 3-5SM. This thinking is also based on persistence from last nights observations, but with slightly higher visibilities, but reductions none the lest. Confidence is higher in further visibility reductions at EFK/MPV, where afternoon rain has fallen, to IFR with some guidance indicating near 1/2SM with FG. Ceilings if fog develops would be 100-500 ft agl. The timing of the lowest visibilities will be between 07Z and 11Z. RUT may also see vsbys to 2SM based on current radar trends of rain showers, but lower confidence exits there. Beyond 12Z, HZ will remain across the area with VFR conditions and light winds through the remainder of the TAF period. Outlook... Sunday Night: VFR. Slight chance SHRA. Monday: VFR. Slight chance SHRA. Monday Night: Mainly VFR, with local MVFR possible. Chance SHRA. Tuesday: Mainly MVFR, with local IFR possible. Definite SHRA, Slight chance TSRA. Tuesday Night: MVFR/IFR conditions possible. Chance SHRA. Wednesday: Mainly VFR, with areas MVFR possible. Chance SHRA. Wednesday Night: VFR. Slight chance SHRA. Thursday: VFR. Slight chance SHRA. && .BTV WATCHES/WARNINGS/ADVISORIES... VT...None. NY...None. && $$ SYNOPSIS...Myskowski NEAR TERM...93/Myskowski SHORT TERM...Kremer LONG TERM...Kremer AVIATION...Danzig