Area Forecast Discussion
Issued by NWS Burlington, VT

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304 FXUS61 KBTV 021134 AFDBTV Area Forecast Discussion National Weather Service Burlington VT 734 AM EDT Sun Jun 2 2024 .SYNOPSIS... Anther warm and dry day is on tap for the North Country with high temperatures in the 80s expected. The warming trend will continue through Tuesday when some places may warm into the upper 80s. There is increasing confidence that we will see widespread rainfall on Thursday which is much needed given the recent dry spell. && .NEAR TERM /THROUGH MONDAY NIGHT/...
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As of 733 AM EDT Sunday...Another seasonably warm day with highs in the 80s is expected across the region today. We should see increasingly high clouds this morning but will have minimal impact on our weather today. Dewpoints once again are expected to tank this afternoon as we mix deeply to 6000 to 7000 ft. Afternoon RH values are expected to drop into the low to mid 20s which will feel nice as any noticeable humidity stays shunted well to the south. Winds will likely be weaker today as the upper level ridge axis remains overhead with little wind to speak of within the mixed layer. Light and variable winds may gust up to 10 mph from the west/northwest this afternoon but shouldn`t be much stronger than that. Increasing cloud cover through the evening hours tonight should help stunt radiational cooling tonight leading to temperatures only dropping into the lower 50s to lower 60s; noticeably warmer than previous nights. Monday will be a degree or two warmer for most locations with decreasing clouds expected during the afternoon hours. With the main ridge axis beginning to shift slightly eastward, some high-res guidance is depicting a rogue shower or two on Monday. We have 10-15% PoPs in the forecast for this but the general thinking is that subsidence and dry low level air should keep shower activity at bay for the time being.
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&& .SHORT TERM /TUESDAY THROUGH TUESDAY NIGHT/... As of 326 AM EDT Sunday...The axis of a mid/upper lvl ridge wl be directly overhead during this timeframe, resulting in dry conditions and above normal temps. Progged 925mb temps are btwn 19-21C, combined with good mixing and recent dry wx, we should over perform in the temp department on Tues, especially urban areas. I have trended toward the 75th percentile NBM temps for highs on Tues, resulting in near 80F mtns towns to mid 80s CPV/lower CT River Valley. Given the dry air mass in place, still anticipating comfortable overnight lows in the upper 40s to near 60F on Tues night. && .LONG TERM /WEDNESDAY THROUGH SATURDAY/... As of 326 AM EDT Sunday...Upper lvl pattern continues to show a large omega type block acrs the northern tier conus with trof over northern Plains, ridge acrs the ne conus and another trof over the North Atlantic. This synoptic scale setup typically takes a little time to breakdown, which modeling sometimes does too quickly, so we have continued to delay the highest pops until Thursday. For Weds, ridge is still in place with very weak upper lvl forcing, but some modest instability is present with sfc based CAPE values in the 400-800 J/kg range, so a pop up shower or two is possible acrs the trrn on Weds aftn. Overall, coverage wl be limited due to the lack of forcing and limited deep layer moisture. As deep and closed mid/upper lvl trof slowly works eastward, better dynamics arrive along with favorable moisture advection, increasing the potential for showers. Given the good model agreement, our confidence is highest for measurable precip late Weds night into Thurs acrs our cwa, with the probability increasing for a widespread wetting rainfall during this time period. As 2 to 3 std below normal heights develop acrs our cwa for late week associated with anomalously strong closed cyclonic circulation an unsettled and cooler pattern is likely, especially Friday into next week. Cool air aloft combined with sfc heating creates some weak instability and results in scattered daily showers, with highest probability of precip acrs the higher trrn for Friday and Saturday. Shower activity should decrease in areal coverage during the nighttime hours, with less instability. Progged 925mb temps cool back into the 10-12C by Friday/Saturday, supporting highs mid 60s to mid 70s and lows mid 50s to near 60F. && .AVIATION /12Z SUNDAY THROUGH THURSDAY/...
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Through 12Z Monday...VFR conditions with light and variable winds are expected through the TAF period. Some very localized fog is occurring at KSLK but should lift by, or shortly after, 12Z. Outlook... Monday: VFR. NO SIG WX. Monday Night: VFR. NO SIG WX. Tuesday: VFR. NO SIG WX. Tuesday Night: VFR. NO SIG WX. Wednesday: VFR. Slight chance SHRA. Wednesday Night: Mainly VFR, with local MVFR possible. Chance SHRA. Thursday: Mainly MVFR, with local IFR possible. Chance SHRA.
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&& .BTV WATCHES/WARNINGS/ADVISORIES... VT...None. NY...None. && $$ SYNOPSIS...Clay NEAR TERM...Clay SHORT TERM...Taber LONG TERM...Taber AVIATION...Clay