Area Forecast Discussion
Issued by NWS Burlington, VT
Issued by NWS Burlington, VT
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959 FXUS61 KBTV 220701 AFDBTV Area Forecast Discussion National Weather Service Burlington VT 301 AM EDT Sat Aug 22 2026 .WHAT HAS CHANGED... As of 259 AM EDT Saturday... No significant changes to the current forecast. && .KEY MESSAGES... As of 259 AM EDT Saturday... 1. A pair of systems will increase precipitation chances across northern New York and southeastern Vermont into the latter portion of the weekend. 2. Trending drier mid next week before showers arrive toward the end of the week. && .DISCUSSION... As of 259 AM EDT Saturday... KEY MESSAGE 1: Today will mainly be dry and seasonable with chances for precipitation increasing later Sunday. A pair of systems will split our area bringing shower chances to portions of the area. The first of the two systems will be a weak coastal low along the coast of southern New England, which will track near Cape Cod and is expected to continue moving northeast out into the Gulf of Maine. Some showers may be possible in eastern Windsor and Orange Counties tonight, however, recent trends have suggested steadier precipitation associated with the coastal system will stay east of the Connecticut River. Any showers that do develop in southeastern Vermont will be light in nature. The second stronger system will be an approaching long wave trough that will track east from the Great Lakes region. The trough moves east into the St. Lawrence Valley later today into early Sunday, with scattered rounds of showers. The trough slowly tracks east through the day Sunday reaching Vermont by later Sunday into Sunday night. Some isolated thunder is possible with these showers, though instability is limited. Precipitation amounts will be light, generally below a half an inch. The higher amounts around a quarter inch will be in northern New York, primarily in the northern St. Lawrence Valley. The trough will pull away to the northeast on Monday. As the trough occludes and drifts northeast, the parent upper low will continue to keep showers chances around with wrap around cyclonic flow. Clouds and shower chances near the International Border and northern New York will continue through the day Monday with seasonable temperatures in the low to mid 70s. KEY MESSAGE 2: Ridging should dominate for Wednesday before it pushes to the east for the end of the week. An upper-level trough looks to build in Thursday and Friday and bring the chance for some showers. A weak northern-stream low should track from west to east out of the Great Lakes Region and into Quebec on during this time, bringing the chance for the showers. A low will try to develop off the Mid- Atlantic Coast and move northward into the region, but model guidance is very split on this. This would enhance rainfall late Friday into Saturday, but right now the rain reaching the region is not favored among the ensembles. && .AVIATION /06Z SATURDAY THROUGH WEDNESDAY/... Through 06Z Sunday...Patchy fog will develop during the rest of the night. It is expected to reach SLK and MPV where IFR visibility is expected to develop. It is possible at EFK, with maybe around a 30-40 percent chance of occurring. Elsewhere, VFR visibility should prevail. After any fog lifts by around 12Z, VFR visibility is expected to continue through the evening. A few showers should develop across northern New York and southern Vermont late tonight and a brief reduction to MVFR visibility will be possible. Winds will generally be southerly up to around 15 KT today, with the highest gusts at PBG and BTV. Winds lighten a little tonight, generally staying under 10 KT. Outlook... Sunday: Mainly VFR, with local MVFR possible. Likely SHRA, Slight chance TSRA. Sunday Night: Mainly VFR, with local MVFR possible. Slight chance SHRA. Monday: Mainly VFR, with local MVFR possible. Chance SHRA, Chance TSRA. Monday Night: Mainly VFR, with local MVFR possible. Slight chance SHRA. Tuesday: Mainly MVFR, with areas VFR possible. Chance SHRA. Tuesday Night: Mainly VFR, with local MVFR possible. NO SIG WX. Wednesday: Mainly VFR, with areas MVFR possible. Slight chance SHRA. && .BTV WATCHES/WARNINGS/ADVISORIES... VT...None. NY...None. && $$ WHAT HAS CHANGED...Neiles DISCUSSION...Myskowski/Neiles AVIATION...Myskowski