092
FXUS61 KBTV 281726
AFDBTV
Area Forecast Discussion
National Weather Service Burlington VT
126 PM EDT Thu May 28 2026
.WHAT HAS CHANGED...
As of 117 PM EDT Thursday...
No significant changes.
&&
.KEY MESSAGES...
As of 117 PM EDT Thursday...
1. Showery and cooler weather is expected through the weekend
with potential for a very isolated thunderstorm Friday
afternoon.
2. Omega block to continue through much of next week with
seasonably cool temperatures and period of showers.
&&
.DISCUSSION...
As of 117 PM EDT Thursday...
KEY MESSAGE 1: The region will remain under a northwest flow
pattern through the end of the week into the weekend keeping
temperatures cooler than seasonal averages and promoting daily
shower potential as a series of troughs move through. The
strongest feature will move through Friday bringing more
widespread shower chances, cold temperatures aloft with
steepening lapse rates, and some breezes. With the cold pool
favored to move directly across northern New York and Vermont,
some light snow is probable at peak levels of the Adirondacks
and possibly the Greens. Accumulations will be light to
negligible given recent warmer conditions and likely rapid
melting of snow as it contacts the surface of the ridges. Still
up to an inch of snow is possible, especially in the
Adirondacks, and could catch more casual hikers off guard. If
you have hiking plans at higher elevations, expect to need some
cold weather gear. Periodic breezy conditions are expected,
especially in the northern Champlain Valley where flow tends to
be more channeled; gusts 20-30 mph possible this afternoon over
Lake Champlain and again Friday night as the upper low passes
bringing a resurgence of northerly flow.
KEY MESSAGE 2: A series of shortwaves will help reinforce the upper
level low anchoring the eastern periphery of the omega block on
Monday and Tuesday. Scattered showers are expected due to the
increased forcing from the shortwave energy which will help keep
temperatures below seasonal normals. Global guidance continues to
slow the breaking down of the omega block which is quite typical in
long-duration blocking patterns. It does look like the blocking
pattern will finally begin to weaken on Wednesday with the upper low
pushing to the east/northeast and the ridge across the central US
shifting eastward. The ridge is expected to weaken and become less
amplified as it shifts eastward which will advect in much warmer
temperatures (close to seasonal normals) but won`t be to the same
extreme seen further west.
&&
.AVIATION /18Z THURSDAY THROUGH TUESDAY/...
Through 18Z Friday...VFR conditions are expected to continue through
the TAF period. There will be a few showers that pop up this
afternoon that could lead to very localized visibilities dropping to
as low as 5SM and have been included as PROB30 groups at most
terminals. Gusty north winds this afternoon will weaken and go
light/variable overnight with winds switching to the south/southwest
between 14Z and 18Z on Friday. Winds will likely become gusty at 15
to 20 knots between 16Z and 18Z on Friday. Additional showers will
be possible on Friday but are most likely to occur after 18Z.
Outlook...
Friday Night: Mainly MVFR, with areas VFR possible. Definite
SHRA.
Saturday: VFR. NO SIG WX.
Saturday Night: VFR. NO SIG WX.
Sunday: VFR. Chance SHRA, Slight chance TSRA.
Sunday Night: Mainly VFR, with local IFR possible. Chance SHRA,
Slight chance TSRA.
Monday: MVFR/IFR conditions possible. Chance SHRA, Slight chance
TSRA.
Monday Night: Mainly VFR, with local MVFR possible. Slight chance
SHRA.
Tuesday: Mainly VFR, with local MVFR possible. Chance SHRA.
&&
.BTV WATCHES/WARNINGS/ADVISORIES...
VT...None.
NY...None.
&&
$$
WHAT HAS CHANGED...Boyd
DISCUSSION...Boyd/Clay
AVIATION...Clay
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