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Upstate/Eastern New York- Jan 9-11 Lake Effect Snow Event


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8 minutes ago, Syrmax said:

Their snowfall map has north of thruway in 6-8" or 8-12" right along border where we are.  I still like 6" as the over/under for us, net.

I'm still going with my call from yesterday of 6 to 12 inches by Tuesday. I am thinking Bville will get another 8 to 10 inch event.

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I've noticed BGM often has lower totals in their advisories/warnings than on their maps. People tend to read those quick advisories/warnings when they pop up on their phone. Seems like a "middle ground" option where they can bump up if needed or they're just a "little off" if it doesn't materialize.

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This setup looks about as good as you could hope.  Extreme instability from deep Arctic air, upstream seeding from two separate bands on slightly different trajectories, that converge right at the south east end of a lake that has surface temps in the low 40s, and an approaching shortwave with increasing synoptic moisture.  I mean come on.  If you chase this one you better know what you’re doing.

507EB216-0642-4CEF-BF7F-299CA4DF54FB.jpeg.168ba66cf76b5c308a1df1bee25c2630.jpeg

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1 minute ago, TugHillMatt said:

So close, yet so far.

P.S. If you guys want to entertain yourselves for a moment, check out the "Hilarious" thread on the Philly subforum. This guy is ridiculous...so disrespectful to a professional met...giving him a piece of my mind. lol

How much for Philly! :lmao:

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NWS not backing down as of now..

 

Lake Ontario...

Lake induced equilibrium levels will quickly rise to around 8K feet
this evening, then steadily rise to over 10K feet on Monday as the
core of coldest air aloft approaches. Synoptic scale moisture will
steadily deepen, especially Monday afternoon and early evening with
the approach of a strong shortwave. The boundary layer beneath the
inversion will feature a deep favorable thermodynamic environment
for large dendrites, with snow:water ratios of better than 20:1 in
the band. The depth of instability and thermal profiles suggests
some thunder/lighting is possible Monday and early Monday evening.

Expect a few bands of lake effect snow to develop ESE of the lake
this evening across Wayne, Cayuga, and southern Oswego counties.
This initial development will be more lake enhanced snow as trough
induced snow showers interact with the lake. This may produce a few
inches of accumulation this evening ESE of Lake Ontario.

Later tonight expect a band of heavy lake effect snow to consolidate
and intensify across southern Oswego County. This lake effect band
will then drift north late tonight and Monday morning as boundary
layer flow backs a little closer to 270 degrees. We then expect the
lake effect snow to remain in place from northern Oswego to far
southern Lewis counties through most of the day Monday. The forecast
is strongly based on the Canadian GEM band position for Monday, with
the high-res WRF and 3km NAM runs likely showing their systematic
bias of being too far south with dominant single bands. The band on
Monday will be intense, especially in the afternoon when snowfall
rates will likely exceed 3"/hr.

Early Monday evening an arctic front will cross Lake Ontario and
capture the east-west oriented lake band, shoving it south and
onshore along the entire south shore of the lake. This will produce
a quick burst of heavy snow along the entire south shore, including
the Rochester area down to about the NY Thruway. Following this
burst, NW/NNW flow will force multiple bands to develop along the
entire south shore of the lake overnight. The airmass becomes cold
enough to force the dentritic growth zone down to near the ground,
which may cut back some on snow:water ratio. Locally enhanced
low level convergence near Irondequoit Bay and Mexico Bay (driven by
concave lake shorelines) may produce locally better snowfall rates,
including the eastern suburbs of Rochester.

As far as accumulations go, we still expect a bullseye of 2+ feet
focusing on northern Oswego County and the southwest corner of Lewis
County, with 8-14 inches across much of the remainder of Oswego
County. There will be a very sharp northern edge to the band, so
there remains some uncertainty on if it will move into far southern
Jefferson County. We will maintain an advisory there for now and
monitor the movement of the band as the event unfolds. Farther west,
expect 4-7" along the south shore of the lake in Cayuga, Wayne, and
Monroe counties Monday night through Tuesday morning, and 3-5 inches
in Niagara/Orleans counties.
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In the meantime, BGM DROPPED our totals to a max of 5 inches through the entire event. lol

Not sure I agree with that. It says til "1 am Tuesday" so maybe they're "sort of" just issuing it for the first round? But Round 2 would be tomorrow evening.  Sort of confusing.

Onondaga-Madison-
Including the cities of Syracuse, Hamilton, and Oneida
305 PM EST Sun Jan 9 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 AM EST
TUESDAY...
...WIND CHILL ADVISORY IN EFFECT FROM 1 AM TO 10 AM EST TUESDAY...

* WHAT...For the Winter Weather Advisory, lake effect snow
  expected beginning tonight. Total snow accumulations of 1 to 5
  inches, highest along and north of the Thruway. For the Wind
  Chill Advisory, very cold wind chills expected. Wind chills as
  low as 20 below zero.
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21 minutes ago, lakeeffectkid383 said:

Not lake effect rain, that’s the front moving through. Still rain none the less but not lake effect. 

Damage done anyways. Lost most of our snowpack save for the plowing sand piles…and now the euro lost thaw weekend storm…2 weeks of dry would suck fiercely 

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7 minutes ago, Blue Moon said:

I think that just corresponds to the WWA for the first round

 

3 minutes ago, LakeEffectKing said:

Yep...

Hmmm, the timeline of the advisory would not imply that though? The second round comes tomorrow evening before this advisory expires. For example BUF included both rounds in their advisory. It's just a bit more clear. Oh, well. It's a logistical thing.

NYZ005-100400-
/O.CON.KBUF.WW.Y.0002.000000T0000Z-220111T0600Z/
Northern Cayuga-
Including the city of Fair Haven
252 PM EST Sun Jan 9 2022

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 AM EST
TUESDAY...

* WHAT...Lake effect snow tonight, and again Monday night. Snow
  accumulations of 3 to 5 inches tonight in the most persistent
  lake snows. Additional accumulation of 3 to 5 inches Monday
  night. Winds gusting as high as 35 mph will produce blowing and
  drifting snow.
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1 hour ago, TugHillMatt said:

So close, yet so far.

P.S. If you guys want to entertain yourselves for a moment, check out the "Hilarious" thread on the Philly subforum. This guy is ridiculous...so disrespectful to a professional met...giving him a piece of my mind. lol

That guy is a real a**.  I guess they don’t teach professional conduct at that grad school he’s attending. If he keeps this up the only place he’ll be able to get a forecasting job is Siberia. Also, he probably wasn’t even alive in 1996 so where does he get the right to criticize a meteorologist probably in the middle of his career at the time. 

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Just now, sferic said:

@TugHillMatt Matt,

 

Can you tell me please when and why one would look at Kuchera numbers? 

k1.JPG

Kuchera is often used to determine snowfall ratios. It gives us a general idea of ratios based on different atmospheric conditions/temperatures in which the models are determining. Often times, it's an 18:1 or 20:1 ratio.

During synoptic storms, the guys on here are much more prone to use 10:1, as dendritic growth, temperatures, moisture, etc... all affect amounts. Also, if it's a wet snow...OR a very dry snow (pixie dust), ratios can be lower.

We also use Kuchera when we are in weenie moods and want to get excited about future GFS calls of 249 inches over a 384 hour period. :P 

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4 minutes ago, CNY_WX said:

That guy is a real a**.  I guess they don’t teach professional conduct at that grad school he’s attending. If he keeps this up the only place he’ll be able to get a forecasting job is Siberia. Also, he probably wasn’t even alive in 1996 so where does he get the right to criticize a meteorologist probably in the middle of his career at the time. 

For real. He needs to be banned. He's a detriment to the Philly forum and I feel bad they have to deal with him. He didn't deserve the time and energy Mike Gorse put into talking with him.

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