As far as snow amounts go, there will be a very sharp drop off in
snow amounts with the southern edge of heavier snow bisecting the
northern portion of the CWA. Expect 4-7" of snow across Niagara and
Orleans counties and possibly far northern Jefferson County as well.
If precipitation changes to all snow fast enough, low end warning
amounts of over 7" cannot be ruled out in this area. The next row of
counties south, including Chautauqua, Erie, Genesee, Monroe may see
2-4" of snow, with less than 2" from the interior Southern Tier to
the western Finger Lakes and counties southeast of Lake Ontario. The
southern edge of heavier snow amounts will be very sensitive to the
position and timing of the front, but the past few model runs have
been fairly consistent.
For ice amounts, expect 0.10"-0.20" across much of Western NY and
the North Country, less than 0.10" from the interior Southern Tier
into the western Finger Lakes and points southeast of Lake Ontario.
Precipitation rates will be quite heavy during the freezing rain, so
there will likely be more QPF falling as freezing rain than these
numbers. High precipitation rates in freezing rain results in very
inefficient conversion to ice, with a large amount of runoff.
Winds...
SSW winds will continue to be quite gusty today, with gusts of 30-40
mph common across the area. Wind gusts will diminish with the
passage of the cold front late this afternoon and evening. There
will be a brief surge of stronger northerly winds overnight behind
the front as colder air rushes back into the region, and this will
bring gusts of 25-35 mph areawide and 40+mph along the south shore
of Lake Ontario.