Cheektowaga, New York 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

793
FXUS61 KBUF 270817
AFDBUF

Area Forecast Discussion
National Weather Service Buffalo NY
317 AM EST Sat Dec 27 2025

.SYNOPSIS...
Low pressure will exit this morning ending any lingering snow
or mixed precipitation. High pressure building into the region
will bring a return to dry weather today through Sunday
morning. A moisture ladened low pressure system will cross the
eastern Great Lakes late Sunday through early Monday, with a
widespread soaking rain, which may start as some freezing rain,
especially east of Lake Ontario. A sharp cold front will cross
the region later Monday, followed by much colder air along with
the potential for strong winds and heavy lake effect snow early
next week.

&&

.NEAR TERM /THROUGH TONIGHT/...
Inverted trough extending from departing surface wave
maintaining snow across eastern sections of the region early
this morning. Any additional snowfall will be minor and less
than two inches. Ridging builds in behind the departing low
and brings a return to dry weather today through tonight.

&&

.SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/...
A very active and changeable stretch of weather this period. A mid-
latitude cyclone will be located near the central Mississippi Valley
Sunday morning, ahead of a phasing upper jet across the south-
central Plains. Through Sunday night the center of the sfc low will
track NE into the Great Lakes region, where it will rapidly deepen
before wobbling into southern Quebec and northern New England. This
will drive a strong, arctic cold front through the eastern Great
Lakes Monday with a variety of associated hazards coming to the
region.

Flooding concerns:

Ahead of the cold front, copious Gulf moisture funneling northward
will push PWATs into potential record territory for late December.
The much warmer airmass will allow plain rain to be the dominant
ptype for most areas through early Monday, with mid-range ensembles
continuing to advertise QPF amounts generally between 1-1.5" across
WNY. While there is little in the way of snow pack across the lower
terrain areas, the amount of rain on top of snowmelt from the higher
elevations could push several creeks and rivers to near flood stage.
The window for this occurrence for the flashier Buffalo Creeks would
be Sunday afternoon through late Monday, when falling temperatures
below freezing slows runoff and allows creek and river levels to
begin to fall. Given the continued wetter and more pessimistic trend
from the NAEFS/GEFS, have elected to put up a Flood Watch with this
update.

In addition, will need to keep an eye on the lakeshore flood
potential Monday and Monday night as strong winds are expected on
the lakes.

Wintry mix potential:

As the system`s warm nose encroaches on the region, there is a
small, brief window for a wintry mix across WNY at the onset of
precip Sunday afternoon. However, given the expected quick warmup to
plain rain, the main focus for more impactful wintry precip will be
east of Lake Ontario. A retreating area of Canadian sfc high
pressure will likely allow for colder air to funnel down the St.
Lawrence Valley Sunday into Sunday night, which will hold down
temperatures and potentially lead to the warm layer overrunning
a shallow subfreezing layer Sunday evening. This could lead to
a period of freezing rain in the valley into Sunday night, as
well as up along the Tug Hill and Western Dacks. Still some
uncertainty in ptype with potential wet bulb cooling aloft,
though Winter Weather Advisories may eventually be needed for
Jefferson/Lewis if these trends hold.

Lake effect snow:

A steady stream of arctic air and reinforcing synoptic moisture
behind the front Monday afternoon will cause lake effect snow to
develop downwind of both lakes, which will persist through Monday
night and beyond. Initially, winds will be southwesterly which will
likely cause the bands to form over the Niagara Frontier in the
afternoon and from around Watertown northward by the early evening.
Winds are expected to shift relatively quickly to westerly and then
northwesterly through Monday night, which would place the
greatest snowfall accumulations by Tuesday morning off Lake
Erie south of Buffalo (Southtowns/Ski Country). Off Lake
Ontario, the greater snows will likely be south of Watertown
across the Tug, and generally across northern Rochester and
eastward towards Oswego. Band intensity and timing of the wind
shifts remains in question, especially early on in the event as
there will be a fast-moving dry slot moving through the region.
By the time the deeper moisture arrives, winds may already be
directing the bulk of the snows south of the Buffalo/Watertown
metros. This said, winds will already a concern when the snow
develops around these areas, so will need to keep a close eye on
trends the next few forecast cycles especially for the Monday
evening commute. Speaking of winds...

Strong gusty winds:

An impressive CAA high wind wind setup will quickly establish itself
behind the arctic front, with favorable momentum transfer taping
into a strong LLJ. The broader jet will be in the 45-55kt range,
though over the lakes models are depicting 850mb wind speeds in the
60-70kt range. This will bring southwest to westerly winds gusting
into 40 to 50 mph range, and likely higher northeast of Lake Erie in
particular. Southwest gusts early Monday would not be great for
trees, especially shallow rooted trees, that may now be situated
within a soggy ground. Additionally these winds, combined with the
lake effect snow will create blowing and drifting snow, with very
poor visibility expected within the lake effect snow bands by Monday
evening.

&&

.LONG TERM /TUESDAY THROUGH FRIDAY/...
Cold arctic air will continue to pour across the lakes this period,
setting the stage for a prolonged period of lake effect snow off
both lakes through most, if not all of next week. Several passing
synoptic features will oscillate these bands of snow, primarily east
and southeast of the Lakes (Lake Erie - Buffalo Southtowns/Ski
Country/ and Lake Ontario- Tug Hill/SE of Lake Ontario) but there
will be times the snowbands lift northward across Buffalo and
Watertown through the week. Shortwave troughs Tuesday night and
Wednesday night will also return deeper moisture to our region which
in addition to upstream connections at times will add moisture to
fuel these bands of oscillating snow. These features could also fuel
additional snow showers outside the main lake effect areas at times.

Winds will remain blustery on Tuesday, not nearly as windy as
Monday, though potentially enough for some blowing snow concerns in
the heart of the lake effect areas, and in any stronger passing snow
showers.

&&

.AVIATION /08Z SATURDAY THROUGH WEDNESDAY/...
Widespread IFR/LIFR will continue across the entire region
this morning. Some light snow and mist early this morning, then
dry weather is expected across the terminals through
tonight. Flight conditions will slowly improve across western NY
this afternoon into tonight.

Outlook...

Sunday...VFR in the morning, deteriorating to MVFR/IFR with rain
developing from southwest to northeast. Freezing rain possible
across the North Country.

Monday...MVFR/IFR. Rain changing to snow early from west to east.
Localized heavier lake effect snow developing east of the lakes late.

Tuesday through Wednesday...Areas of MVFR with scattered snow
showers. Localized heavier lake effect snow and IFR/LIFR possible
east/southeast of Lake Erie and Lake Ontario.

&&

.MARINE...
Moderate easterlies continuing on Lake Ontario this morning,
gradually diminishing through the day.

A strong cold front will cross the lower great Lakes Sunday night
into Monday. Westerly gales are likely with possible storm force
gusts Monday into Tuesday.

&&

.BUF WATCHES/WARNINGS/ADVISORIES...
NY...Winter Weather Advisory until 4 AM EST early this morning for
     NYZ001>003-007-008-010>014-019>021-085.
     Flood Watch from Sunday afternoon through Monday afternoon for
     NYZ001-002-010>012-019>021-085.
     Winter Storm Warning until 4 AM EST early this morning for
     NYZ004>006.
MARINE...Gale Watch from late Sunday night through Tuesday evening for
         LEZ040-041.
         Small Craft Advisory until 10 AM EST this morning for
         LOZ042>044.
         Gale Watch from Monday morning through late Tuesday night
         for LOZ042>045-062>065.

&&

$$

SYNOPSIS...TMA
NEAR TERM...TMA
SHORT TERM...PP/Thomas
LONG TERM...PP/Thomas
AVIATION...Hitchcock/HSK/TMA
MARINE...Hitchcock/TMA