Probabilistic Heavy Snow and Icing Discussion
NWS Weather Prediction Center College Park MD
311 AM EST Sat Feb 26 2022

Valid 12Z Sat Feb 26 2022 - 12Z Tue Mar 01 2022

...Northeast...
Day 2...

An arctic cold front will whip through the Northeast Sunday,
likely accompanied by a burst of snow along and behind its
boundary. This will be most favored over the North Country in NY
and across parts of central and northern New England. Amounts with
the front and squalls may only be an inch or two (with some
enhancement over higher terrain), but some may fall in a very
short period of time. Please see the Key Messages statement below
for further information.


...Pacific Northwest...
Days 1-3...

Active pattern for the Northwest over the next few days as an
atmospheric river gets established into the region by Monday after
a lead system Sunday weakens over the region. Day 3 appears to be
the wettest overall with a precipitable water surge from the
southwest of +2 to +3 sigma (0.75-1.00") yielding a large area of
at least 1" liquid equivalent even up to 3" or so near the
mountain tops. Snow levels will start low Day 1 with lighter snow
amounts but increase by day 3 above 5000ft over much of
Washington. Multi-day totals will exceed several feet at the
highest elevations with significant accumulations possible at some
pass levels before even they change over to rain late Day 3.
Farther east, westerly flow will carry precipitation across the
eastern lowlands especially late Day 2 into 3 with a few inches of
snow in the Okanogan Highlands. More snow is expected into
northern Idaho and northwestern Montana into Day 3 where WPC
probabilities of at least 6 inches of snow are moderate (40-70%). 


Fracasso



Key Messages:

 - A strong cold front will sweep through the Northeast Sunday
afternoon and evening.

 - Snow squalls are likely to move from northwest to southeast
along and behind the front across northern portions of New York
and New England.

 - Intense but brief snowfall up to 1 inch per hour and wind gusts
over 40 mph will be possible with these snow squalls. Visibility
can quickly drop and create hazardous travel conditions when
combined with new snow on the roads.

 - Any wet roadways will quickly freeze back over as temperatures
drop into the teens and single digits Sunday night.