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Upstate NY/North Country + adjacent ON, QC, VT: Winter!


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14 minutes ago, LakeEffectKing said:

 

Looking at the Canadian Radar composite, note the importance of concavity of the shorelines as to the genesis of intense bands (Saginaw Bay off Huron and Keweenaw Bay off Superior)

 

 

So is that why lakes Erie and Ontario are usually single-banded when winds are W to SW? Does the shape of the lake cause convergence of winds to form more intense, single band?

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26 minutes ago, LakeEffectKing said:

Looking at the Canadian Radar composite, note the importance of concavity of the shorelines as to the genesis of intense bands (Saginaw Bay off Huron and Keweenaw Bay off Superior)

 

Canadian Radar.png

That band off of Superior is just unreal. I've always wondered what places on the East side of Superior average per year. Probably 300-400"+. That band is producing 5+" per hour easily. 

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Area Forecast Discussion
National Weather Service Buffalo NY
1029 AM EST Wed Dec 14 2016
 
.NEAR TERM /THROUGH TONIGHT/...
Current radar and satellite trends seem to be right on track with the
forecast for heavy snow across Metro Buffalo and the satellite and
surface observations indicate then Watertown and northern Jefferson
county are getting hit hard by snow off Lake Ontario. Will continue
to monitor and update the forecast as needed, but everything seems
to be verifying well at this time.

...Major impacts to the Buffalo and Watertown evening commutes
expected today as heavy lake effect snow produces near blizzard
conditions...

An arctic airmass will spill across the region today, associated
with a lobe of the polar vortex seen on WV satellite imagery
spinning into far northwest Ontario province. 850 mb temperatures
will fall from around -14C this morning to about -21C by early
Thursday morning. The steepening lapse rates aloft by this
afternoon, combined with increasing synoptic moisture with an
approaching shortwave this afternoon will allow lake effect snow to
develop northeast of Lakes Erie and Ontario, on a southwesterly 230
to 240 flow. This means the lake effect snow will intensify in place
over the city of Buffalo and the Northtowns to near North Tonawanda
this afternoon. Expect the snow to develop after 1pm, and becoming
heavy (1 to 2 inches and hour or more) by 3 to 4pm. As the impinging
shortwave nears, the wind will veer to 260 degrees by 7pm, quickly
pushing the band through the Southtowns, where it will then settle
across the western Southern Tier overnight on 270-280 degree flow
behind the shortwave passage. Thus while we are expecting only a few
hours of heavy snow across the Buffalo metro area, it will come at
prime rush hour, with the worst between 4 and 7pm. Further worsening
the conditions during the evening commute will be the gusty winds
producing blowing and drifting snow, with near blizzard conditions.
Total accumulations across the Buffalo metro area will range from 4
to 7 inches. Also expect the band will get just far enough north to
impact far southern portions of Niagara County, and thus have
included them in a Lake Effect Snow Advisory. Similarly Watertown
area and traffic along the I-81 corridor, from Central Square to
Watertown will experience worsening conditions late this afternoon
and evening. The band of snow will develop near Watertown late in
the afternoon and shift southward toward the Tug Hill this evening.
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2 hours ago, southbuffalowx said:

So is that why lakes Erie and Ontario are usually single-banded when winds are W to SW? Does the shape of the lake cause convergence of winds to form more intense, single band?

Yes, absolutely....Synoptic flow from land, as it enters a bay and then to an open body of water, will converge instantly upon bay entrance....thus beginning the structure necessary to create inflow over the rest of the lake....

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1 minute ago, ayuud11 said:

ROC crew get ready!

 

4ktm2w.png

I'll let you know if anything happens.  Past experience shows the convection always completely crashes and burns as soon as it leaves Genessee county.  Not expecting more than an inch or two.  Thinking of driving west this evening to get at least see some snow.  Good luck B-lo, looking good so far.

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Current conditions at

Buffalo, Greater Buffalo International Airport (KBUF)

Lat: 42.94°NLon: 78.74°WElev: 709ft.
blizzard.png

Thunderstorm Snow Blowing Snow

25°F

-4°C

Humidity 69%
Wind Speed SW 15 G 28 mph
Barometer 29.92 in (1014.5 mb)
Dewpoint 16°F (-9°C)
Visibility 0.50 mi
Wind Chill 13°F (-11°C)
Last update 14 Dec 1:54 pm EST
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1 minute ago, tim123 said:

In right conditions i have seen monroe county get 6 to 12 from erie.

I would love to know the date of these events.  Been watching these for nearly 30 years and have to disagree.  Perhaps hybrid events with strong arctic fronts and lots of synoptic moisture but never a pure bred lake effect event such as this one.  The biggest buffalo events simply do not make it this far.  Time and time again the NWS puts us under warnings/advisories for these events and absolutely nothing happens.  They really need to make LES watches and warnings with the polygons that are used for Thunderstorms.  I mean throwing the whole county under an advisory for this event is plain foolish.   

I do agree that under perfect circumstances we could maybe squeak out 2-4 in the metro with 6-8 in the far SW corner of the county.  That said, this event is missing a lot of ingredients to make that happen.  

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