AREA FORECAST DISCUSSION
National Weather Service Albany NY
705 PM EST Fri Feb 12 2021
.SYNOPSIS...
High pressure will bring cold, dry weather to the area through
Saturday. A weak storm system passing by to our south will
probably bring a light snowfall Saturday night into Sunday, then
dry and slightly milder weather will follow later Sunday. A more
unsettled with pattern will develop next week with chances for
snow starting on Monday.
.SHORT TERM /6 AM SATURDAY MORNING THROUGH MONDAY/...
High pressure will bring continued cold dry weather to the area
on Saturday. On Saturday night, a weak wave of low pressure
will develop off the mid-Atlantic coast and track east-northeast
well to the south of New England. This system will combine with
a weak northern branch feature to bring a little light snow to
most of our area Saturday night into early Sunday. Snowfall
totals for most of the area will be less than 2 inches.
.LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
Active weather pattern is expected in the long term period as two
separate systems are likely to impact our area.
The first system approaches Monday night and moves across the region
on Tuesday. There is fairly good model agreement with this system as
the surface low will track along a strong baroclinic zone, which
looks to be positioned to the south of the area (perhaps around New
York City or Long Island). The differences with the guidance is how
far north the warm nose gets aloft, which will determine where the
mixing line occurs. A general blend of the GFS/ECMWF at this time
suggests the best mixing potential is to the south of the Capital
District (across the mid-Hudson Valley into Litchfield County, CT)
but could shift farther north or retreat south in future runs. Areas
that are all snow could end up with at least a moderate
accumulation.
High pressure will build in on Wednesday and bring a dry day before
the next system forms near the Lower Mississippi Valley and tracks
across our area Thursday and Friday. Model guidance varies regarding
the track of this system. The GFS is rather consistent in tracking
this low to our west, which would lead to a transition from snow to
ice and then rain for most areas. The ECMWF, however, has more of a
track to our east, which would favor mostly all snow, with perhaps a
wintry mix to the south and east of the Capital District, pending on
how far north the warm nose gets. This system is still several days
out at this time so will hold with a blended approach and keep
p-type just snow/rain.