


Area Forecast Discussion
Issued by NWS Burlington, VT
Issued by NWS Burlington, VT
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502 FXUS61 KBTV 261934 AFDBTV Area Forecast Discussion National Weather Service Burlington VT 334 PM EDT Thu Jun 26 2025 .SYNOPSIS... Much cooler temperatures with plenty of clouds will impact our region today, along with a few light rain showers. Any rainfall amounts will be light and generally under a tenth of an inch. An active period of weather is anticipated late Friday into Saturday with several rounds of localized heavy rainfall expected. Drier and warmer weather returns by early next week. && .NEAR TERM /THROUGH FRIDAY/... As of 330 PM EDT Thursday...A relatively cool and quiet day continues across the region this afternoon, with just a few light showers reaching the ground given drier air at the surface. High temperatures this afternoon have only climbed into the upper 60s and low 70s, with plenty of cloud cover across the region. Some isolated to scattered shower activity will continue to linger into tomorrow. Overnight lows tonight will be fairly seasonably, with most locations dropping into the 50s. Cooler conditions will continue into tomorrow, with high temperatures once again only warming into the upper 60s and low 70s. && .SHORT TERM /FRIDAY NIGHT THROUGH SATURDAY NIGHT/... As of 330 PM EDT Thursday...An active period of weather is still anticipated for Friday night through Saturday, with several rounds of showers and embedded thunderstorms possible. The environment will be quite favorable for efficient rainfall processes, with PWAT values nearing 2.0 inches and deep warm layer cloud depths. Given the favorable heavy rain set- up, isolated flash flooding will be possible, especially in locations that receive multiple rounds of rainfall. Compared to the previous forecast, the axis of the heaviest precipitation has trended further northward, keeping just the southern periphery near the international border. Despite the current trend, any upstream convection and potential MCS will likely influence the exact location of the heavier rainfall so there is still some uncertainty. The current forecast shows 1.5 to inches across the northern portions of the forecast area, with some locally higher amounts possible. Given this current trend, no Flood Watch has been issued at this time, but trends will need to be monitored with the next few rounds of model guidance as we get closer to the event. WPC continues to maintain a Slight Risk (2 of 4) in the Day 2 Excessive Rainfall Outlook. Showers will begin to taper off towards Saturday evening. Temperatures during this time remain on the cooler side, with highs generally in the 70s. Overnight lows will be on the milder side with cloud cover and precipitation, generally in the upper 50s to mid 60s. && .LONG TERM /SUNDAY THROUGH THURSDAY/... As of 330 PM EDT Thursday...Sunday will see things dry out as the trough moves out of the area bringing the return of warmer weather as temperatures push back into the upper 70s and low 80s. There will still be some potential concerns with runoff from higher terrain heightening the chances for some flooding in the lower valleys during the day. Ridging moves in on Monday, bringing partly cloudy skies and another push of heat ahead of a warm front. Valleys will push into the upper 80s with some spots reaching 90. While we will have mid level ridging, there is still slight chances for some isolated convection in the afternoon across the region Tuesday will be more unsettled as a cold front moves into the region. Timing still remains up in air, but there are chances for more widespread convection during the day Tuesday. The mid-week also remains unsettled as an upper low stalls to our north, bringing chances for afternoon showers and thunderstorms. && .AVIATION /20Z THURSDAY THROUGH TUESDAY/... Through 18Z Friday...Overall, VFR conditions and light winds are expected through the TAF period. Some light rain showers are generally expected between 18Z and 00Z across our terminals but given that the rain is expected to fall out of a 10kft deck, much of it will likely evaporate prior to making it to the ground. Any rain that does make it down to the ground will be light and likely won`t have any impact on the flight category expect some brief periods of MVFR Vis. MPV could see some early morning fog if the mid level deck clears out, with some pre-dawn IFR conditions. Winds will out of the northeast this afternoon at 5-10 knots, becoming light and variable overnight before becoming southeasterly at 5-10 knots tomorrow. Outlook... Friday Night: Mainly VFR, with local MVFR possible. Definite SHRA, Slight chance TSRA. Saturday: Mainly MVFR, with local IFR possible. Definite SHRA, Slight chance TSRA. Saturday Night: Mainly MVFR, with local IFR possible. Chance SHRA, Slight chance TSRA. Sunday: Mainly MVFR, with local IFR possible. Slight chance SHRA. Sunday Night: Mainly VFR, with local IFR possible. NO SIG WX. Monday: Mainly VFR, with areas MVFR possible. Slight chance SHRA, Slight chance TSRA. Monday Night: Mainly VFR, with local MVFR possible. Likely SHRA, Slight chance TSRA. Tuesday: MVFR/IFR conditions possible. Likely SHRA, Slight chance TSRA. && .HYDROLOGY... The latest NWS forecast continues to support the idea of several rounds of moderate to locally heavy rainfall will be possible late Friday into Saturday. With boundary position and movement at play, the exact placement of heaviest rainfall remains somewhat uncertain, with the most recent guidance trending further north with the heaviest precipitation across southern Canada. Given near normal streamflows and 0-40cm soil moisture profiles, we do have some wiggle room/capacity to handle some of the runoff. As such, widespread mainstem river flooding is not expected at this point with the emphasis more on the flash flood threat in small streams/watersheds in steep terrain. However, a few of the smaller rivers may see sharp rises by Saturday. Our current precipitation forecast indicates 1.0 to 2.0 inches, with localized higher amounts likely across the higher terrain and northern portions of the forecast area. It needs to be stated, a significant variability in rainfall distribution often occurs during convective events, so exact precip amounts and placement are very challenging. Current 3/6 hour flash flood guidance of between 2 and 3.5 inches all appears reasonable at this time. && .BTV WATCHES/WARNINGS/ADVISORIES... VT...None. NY...None. && $$ SYNOPSIS...Kremer NEAR TERM...Kremer SHORT TERM...Kremer LONG TERM...Verasamy AVIATION...Verasamy HYDROLOGY...NWS BTV