AREA FORECAST DISCUSSION
National Weather Service Albany NY
740 PM EST Tue Jan 24 2023
.SYNOPSIS...
Lake-effect snow showers and flurries will gradually come to an
end tonight. A storm system will push across the region
Wednesday through Thursday. Snow will overspread the area on
Wednesday and could fall moderate to heavy at times in the
afternoon. Precipitation will become a wintry mix or even rain
in some areas Wednesday night. Precipitation switches back to
all snow on Thursday and continue across areas mainly outside of
the Hudson Valley before ending Thursday night.
.SHORT TERM /6 AM WEDNESDAY MORNING THROUGH THURSDAY/...
Winter Storm Warnings and Winter Weather Advisories issued for
the entire area beginning on Wednesday.
Low pressure will approach from the Tennessee Valley on
Wednesday and bring our next widespread winter precipitation
event. The day will start out cloudy and dry, then the first
round of warm air advection precipitation (in the form of snow)
moves in from south to north during the late morning hours and
continues through the afternoon. As we enter the afternoon
hours, strong frontal forcing (northward lifting enhanced 700
hPa frontogenesis) could result in a northward translating heavy
snow band (per CSTAR research) which could lead to periods of
moderate to heavy snowfall. Snowfall rates could reach up to 1
inch per hour within the snow band and could impact any or all
areas. Where upslope flow is favored (i.e. eastern Catskills,
eastern Mohawk Valley and Adirondacks), snowfall rates could
exceed 1 inch per hour at times. The Wednesday evening commute
will be impact across all areas with the snow continuing to
fall.
By Wednesday evening, a mid-level dry slot and warm nose will
begin to punch into the region from the southwest. This will
both lead to a gradual decrease in precipitation intensity and
could also result in precipitation changing over to a wintry mix
and/or plain rain in some areas as surface temperatures attempt
to rise to or above the freezing mark. Forecast soundings
suggest that we may end up losing ice in the cloud during
Wednesday night and precipitation could eventually be more in
the way of drizzle/freezing drizzle instead. For now, we kept
precipitation types as rain or freezing rain at this time.
As we head into Thursday, the cold conveyor belt of the system
moves in as precipitation switches back to all snow and is
mainly focused across areas outside of the Hudson Valley. (WTAF?)
Additional light accumulations are expected during this time. A
few flurries cannot be ruled out from time to time across the
Hudson Valley but no accumulation is expected as temperatures
will be above freezing.
When all is said and done, snow/sleet amounts of 2 to 5 inches
are expected across most valley areas with 4 to 10 inches in the
higher terrain (eastern Catskills, Adirondacks and southern
Greens). Ice amounts will range from a light glaze to one tenth
of an inch. Winter Storm Warnings and Winter Weather Advisories
were issued as a result.
Wind will also accompany this system with gusts in the 25 to 35
mph range on Wednesday and Wednesday evening out of the east to
southeast and the westerly direction on Thursday.
High temperatures on Wednesday will reach the mid-20s to mid-30s
with temperatures slowly rising Wednesday night. Highs Thursday
will reach the lower 30s to lower 40s.