Mmm mmm good, BTV
Bolded the important parts. I knew it, @powderfreak.
As northern/southern stream energy phases double barrel low pres
with strong cad signature on lee-side of the Appalachians Mtns
develops on Sunday. The mid lvl ascent associated with an axis of
moderate to strong 7h fgen forcing wl shift from the mid Atlantic
states toward central New England on Sunday night, while potent
northern stream energy moves directly overhead. This synoptic scale
lift and advection of deeper sub-tropical over our very cold air
mass in place wl produce a period of moderate snowfall with high
fluff factor. Did note even in the drier GFS sounding profiles an
extremely deep DGZ from the sfc thru 22,000 feet with near
saturation in terms of ice in the cloud. This moisture/thermal
profiles indicate the potential for big time fluff factor acrs our
cwa, which could result in higher snowfall totals if enough moisture
is present. Snow ratios could be in the 20 to 25 to 1 ratio. The
primary impacts would be difficult travel late Sunday into Monday,
with moderate snowfall rates and very low visibilities. NBM
indicates probability of 7 inches or more of 60% or greater along
and south of a OGS to BTV to 1V4, with 60 to 80% or higher for
snowfall of at least 4 inches or more.
Mid/upper lvl trof along with some mid lvl goodies for enhanced
synoptic scale ascent lingers into Monday night with additional
light snowfall likely, that is why the watch is thru 06z Tues. This
lagging energy causes sfc low pres to stretch and linger just east
of MA, which could result in light snow prevailing into Tues,
especially as northwest upslope flow develops. Eventually moisture
decreases and snow showers taper off.
Temps wl continue to be much below normal for Sunday through the
middle of next week, especially Sunday into Monday with cold
northerly sfc winds and plenty of cloud cover.