Miller Type-B situation unfolding on Sunday. Sfc low over the Mid-
Mississippi Valley heads ever so slowly east while weakening as tracks
across the Ohio Valley and then dissipates over western PA. While
this occurs, a secondary low is forecast to develop along the Mid-
Atlantic coast. For our region, there still remains a lots of
uncertainty at this point. While it appears that a good portion of
the region will remain precipitation free Sunday, some moisture may
make inroads into Western NY (Southern Tier). Elsewhere, the stout
sfc ridge to our north will likely keep a grip on the rest of the
region. Still lots of time for things to change. Will have to keep a
close eye on this system. It could bring accumulating snows or not
much at all as we head into next week.
&&
.LONG TERM /MONDAY THROUGH WEDNESDAY/...
Again still lots of uncertainty during this time period. Strong area
of Canadian sfc high pressure will "likely" still have a firm grip
on the region. Depending on which wins the position battle will then
determine our chances for some snow.
It`s still anticipated that the parent sfc low will dissipate over
western PA on Monday. As of the 28/12Z guidance, nearly all models
are still in decent agreement that a rapidly intensifying nor`easter
will develop just off the Mid-Atlantic coast at the start of the work
week, then moves in a northeasterly direction. The question will
then be how much the Canadian sfc high holds on to its crushing grip
across the region. If it holds strong, it`s "likely" that the region
will feel no more than a glancing blow for parts of the forecast
area. 28/12Z ECMWF is currently advertising this solution.
Furthermore, to hammer home the uncertainty there is a large spread
in potential snowfall in the ensembles. With that said, have a mix
of chance to low end likely POPs for Western NY for Sunday night
through Monday. Low confidence at this point. Stay tuned as things
could change moving forward through the first half of the work week.
Storm system then pulls away by midweek and then sfc high pressure
takes over for late Wednesday through Thursday.