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Upstate/Eastern New York


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As the low tracks over southern Quebec on Thursday night, low-level
flow becomes more westerly/then northwesterly which along with H85
temps down to -9c will support some lake response most vigorous it
appears off Lake Ontario where low-level convergence into the Tug
Hill is strongest. Forecast soundings showing sufficient moisture
and lake equilibrium levels to around 8kft (Lake Erie) and 11kft
(Lake Ontario) easily should support solid advisory amounts east of
both lakes and possible warning amounts of 7"/12hr or 9"/24hr. Main
issue is steadily shifting winds, so that *could* limit total
amounts. No watches for this relatively shorter event attm, but will
keep mention in HWO. Later headlines, either warnings or advisories
are likely though.

&&

.SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/...
A potent shortwave trough will track across the North Country
Thursday night into Friday and additional synoptic moisture and lift
will intensify lake snows especially east of Lake Ontario. A
secondary cold front will move through late Friday morning and lake
effect bands with shift south into the southern shore of Lake
Ontario and western Southern Tier. The mobile nature of the lake
bands off of both lakes with the passing front will limit some of
the snowfall amounts for any one location. Snowfall amounts of 1-3
inches will be possible for Friday with the lake bands. Behind the
passing cold front, 850H temperatures will cool to around
-16C through Friday night. Lake snows will likely stick around
through Friday night as an upper level trough remains overhead.
Areas outside of lake bands may see around an inch or so as the cold
front moves through the region Friday.

Temperatures will reach the upper 20s to low 30s Friday with lows in
the single digits to teens Friday night.

As the trough over the region tracks east and ridging increases
over the area, the lake response off of both lakes will diminish
through the day on Saturday. Chance POPs for snow showers southeast
of the lakes will be in place for most of the day on Saturday, and
any snow showers that do occur should be light with only around a
half inch possible
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After a mostly dry morning, light snow chances increase west to east
Sunday afternoon out ahead of an approaching mid level trough
tracking across the Great Lakes region Sunday night and into Monday.
Uncertainty still remains fairly high in regards to the synoptic
scale dynamics as this feature moves across the Great Lakes. Long
range guidance indicates that this shortwave will propogate fast
enough to catch up with the longwave ridge, effectively creating a
more zonal flow pattern and limiting the amount of vorticity
advection taking place overhead. Additionally, model guidance
signals a better organized low pressure system tracking east across
the Central CONUS, which looks to pass our area to the south. This
system may clip the Southern Tier with greater chances for snow
Monday afternoon through the evening hours. The placement and track
of this system remains highly uncertain due to the spread in the
model solutions even with the newest 12z guidance, with the latest
ECMWF bringing this system far enough north to bring widespread
precip to most of the forecast area. Keeping only chance PoPs
through Monday evening until better concensus can be established.

Increasing NNW flow and marginal 850mb temps may lead to a few light
lake effect showers southeast of Lake Ontario and Lake Erie for
Tuesday and Wednesday, though this will be highly dependant on the
track of the aforenentioned low as it passes to the east. Highs
through the rest of the period will be in the mid to upper 20s for
most of the area, with lows in the mid to upper teens and single
digits east of Lake Ontario.
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6 minutes ago, wolfie09 said:

After a mostly dry morning, light snow chances increase west to east
Sunday afternoon out ahead of an approaching mid level trough
tracking across the Great Lakes region Sunday night and into Monday.
Uncertainty still remains fairly high in regards to the synoptic
scale dynamics as this feature moves across the Great Lakes. Long
range guidance indicates that this shortwave will propogate fast
enough to catch up with the longwave ridge, effectively creating a
more zonal flow pattern and limiting the amount of vorticity
advection taking place overhead. Additionally, model guidance
signals a better organized low pressure system tracking east across
the Central CONUS, which looks to pass our area to the south. This
system may clip the Southern Tier with greater chances for snow
Monday afternoon through the evening hours. The placement and track
of this system remains highly uncertain due to the spread in the
model solutions even with the newest 12z guidance, with the latest
ECMWF bringing this system far enough north to bring widespread
precip to most of the forecast area. Keeping only chance PoPs
through Monday evening until better concensus can be established.

Increasing NNW flow and marginal 850mb temps may lead to a few light
lake effect showers southeast of Lake Ontario and Lake Erie for
Tuesday and Wednesday, though this will be highly dependant on the
track of the aforenentioned low as it passes to the east. Highs
through the rest of the period will be in the mid to upper 20s for
most of the area, with lows in the mid to upper teens and single
digits east of Lake Ontario.

An actual winter forecast discussion, it's finally here. 

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4 minutes ago, Luke_Mages said:

We’re going to St Lucia Saturday, I hope I can’t get into my driveway when I get back :lol:

Nice! We went away one year during the winter when we lived in Michigan. While we're gone, a couple of synoptic storms hit....with freezing rain and sleet mixed back and forth with snow. Our driveway was IMPOSSIBLE to get into after the plows pushing it and it freezing over. One of the few times I did NOT enjoy shoveling my driveway!

 

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4 minutes ago, Luke_Mages said:

We’re going to St Lucia Saturday, I hope I can’t get into my driveway when I get back :lol:

Nice!  Went there 2 years ago for a work trip with the wife!  Amazing- you will get sick on the way to the resort of choice as the hills are so steep.  It is a true paradise in the West Indies.  Enjoy!

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17 minutes ago, TugHillMatt said:

Nice! We went away one year during the winter when we lived in Michigan. While we're gone, a couple of synoptic storms hit....with freezing rain and sleet mixed back and forth with snow. Our driveway was IMPOSSIBLE to get into after the plows pushing it and it freezing over. One of the few times I did NOT enjoy shoveling my driveway!

 

Wait...it snowed WHILE you were away??? Surprise surprise!!!

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Some hopeful words from KBGM Long Range Disco:

Low pressure is expected to track northeastward from the Gulf coast to the Mid-Atlantic Monday and Tuesday. The 12Z Operational GFS is showing similar biases with a further south and east storm track. Given research into it`s biases this solution was discounted with the forecast weighing heavily on the ECMWF suite, UKMET and CMC. These solutions bring a low into the Ohio Valley then send it offshore as it encounters a blocking high to the north. Temperatures generally look to be in the 10`s and 20`s early next week leaning precipitation chances to be in the form of snow. While confidence has increased slightly, this event is still 5 days away and any small adjustments to the track and intensity could lead to significant changes in forecaster thinking.

 

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54 minutes ago, SyracuseStorm said:

Nice!  Went there 2 years ago for a work trip with the wife!  Amazing- you will get sick on the way to the resort of choice as the hills are so steep.  It is a true paradise in the West Indies.  Enjoy!

We went on our honeymoon 11 years ago and my wife got sick going to and from the resort lol. Last year we rented a car and that was much better. This year you cant rent cars becsua of Covid so we'll see this goes. I agree, this is our favorite island. St Kitts is a close second.

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