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Upstate NY/North Country + adjacent ON, QC, VT: Heading into December


Alpha5

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They maybe over hyping to a certain extent, but the amount of low level convergence that will be ongoing along with wide open lakes and orographic effects will give the areas south of BUF (Ski areas??) a chance at well over a foot of snow over 2-3 days....ESE of Ontario we MAY be able to get a decent band going for a bit into Monday morning before the AF slides through...and if it "slides" through slow enough, we could be looking at several hours of "tremendous" rates off Ontario Sun. night.

 

Mon. afternoon, we will transition into much less intense banding and most likely much smaller dendrite sizes.  Still can accumulate around these parts in that scenario.

 

As for Accuweather's proclaimation that ART and BUF will see heavy LES???  That's not going to happen...at least for any substantial length of time....say for SUN morn..

I'm having an extremely difficult time figuring out where the bands are going to be for the next 3 or 4 days.  The wind direction is so changeable and sheared at times.  

 

From the looks of things now, even the Tug will have a tough time Sunday.  The wind veers to about 290 right around the time the les conditions become more ideal. Wayne County to SW Oswego County might be do okay on Sunday night.

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last night's MM5 doesn't bring the arctic front through so quick so it maintains 290 flow or so over LO through 12z Monday.  Actually paints a decent band and precip totals for the Fulton to Central Square area.

It (MM5) does VERY well, from my previous use of it, in depicting the placement/orientation of any lake induced convergence (trough) in modified arctic airmasses....almost always these zones of convergence (in an otherwise weak BL flow) tend to migrate (get stuck) to a parallel shoreline convergence area...and have occasionally observed this on L. Erie as well with a more SW flow pattern, but more often on L. Ontario...now if the AF has enough depth to it, it certainly will be enough to overcome this phenomena....we'll see.

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Advisories up for a bunch of CNY Counties

 

...LAKE EFFECT SNOW ADVISORY IN EFFECT FROM 1 PM SUNDAY TO 8 AMEST MONDAY...THE NATIONAL WEATHER SERVICE IN BINGHAMTON HAS ISSUED A LAKEEFFECT SNOW ADVISORY...WHICH IS IN EFFECT FROM 1 PM SUNDAY TO8 AM EST MONDAY.* LOCATIONS...WESTERN MOHAWK VALLEY AND ONONDAGA COUNTY.* HAZARDS...MODERATE TO HEAVY SNOW SQUALLS.* ACCUMULATIONS...4 TO 6 INCHES WITH LOCALLY HIGHER AMOUNTSPOSSIBLE.* TIMING...LAKE EFFECT SNOW WILL SETTLE INTO THE AREA BY LATEAFTERNOON AND FLUCTUATE THROUGH MONDAY MORNING.* TEMPERATURES...TEMPERATURES WILL FALL INTO THE 20S ON SUNDAYAFTERNOON, DROPPING INTO THE TEENS BY MONDAY MORNING.* WINDS...WEST 15 TO 30 MPH WITH GUSTS UP TO 45 MPH.* IMPACTS...SNOW COVERED AND SLIPPERY ROADS. VISIBILITIES WILL BEREDUCED TO NEAR ZERO AT TIMES IN HEAVY SNOW AND BLOWING SNOW.THERE WILL BE CONSIDERABLE BLOWING AND DRIFTING SNOW AS WELL.
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Winds are ripping here. Theres a roar to the wind I honestly havnt heard in years. TWC just said Buffalo just had a gust between 60-70mph in the last few minutes.

 

KBUF 200954Z 24031G53KT 10SM BKN034 BKN040 OVC060 06/00 A2947 RMK AO2 PK WND 25053/0951 SLP983 T00610000 $

 

Peak wind gust of 53kt or 61mph at Buffalo in the last 15 minutes. I will be real interested to see their next ob though, I feel that a max gust near 70 is entirely possible.

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The surface station at SUNY Oswego reported a 57 mph gust a few minutes ago.

 

http://www.oswego.edu/met_class/tower/index.html

 

i was just out on the L Ontario shoreline, next to the SUNY Oswego campus.  I would guess the wind was still gusting well over 50 mph.  Waves were ripping - easily breaking over 8 feet.  Try to post some pics later.  

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We probably see some cool/odd looking mid-lake bands as we head into Monday through Wednesday.  The surface flow is light at times...and with the psuedostationary arctic front...the bands won't necessarily be over land.  Maybe some MCVs embedded at times, too?

 

Some very intense winds early this morning, woke me up a few times throughout the night. We had one of those I can remember that barely made it over land a few miles at most and produced 3-5 inches of fluff in a matter of 1-2 hours. Was quite insane as it was not predicted by NWS at all.

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i was just out on the L Ontario shoreline, next to the SUNY Oswego campus.  I would guess the wind was still gusting well over 50 mph.  Waves were ripping - easily breaking over 8 feet.  Try to post some pics later.  

 

There were a couple of 61 mph gusts at around noon based on the station obs.

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We probably see some cool/odd looking mid-lake bands as we head into Monday through Wednesday.  The surface flow is light at times...and with the psuedostationary arctic front...the bands won't necessarily be over land.  Maybe some MCVs embedded at times, too?

 

Yea it seems likely there will be a strong land breeze at times given the light synoptic pressure gradient and very cold air. That may lead to a lake mesovortex around the more circular eastern shore of Lake Ontario. A tea kettle band may also develop from the land breeze circulation with snow staying mainly near the shoreline.

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Yea it seems likely there will be a strong land breeze at times given the light synoptic pressure gradient and very cold air. That may lead to a lake mesovortex around the more circular eastern shore of Lake Ontario. A tea kettle band may also develop from the land breeze circulation with snow staying mainly near the shoreline.

 

 

Somewhere between Fulton and Sodus will receive well over a foot of snow between late this afternoon and Tues. morn....and most likely much more in a few "lucky" spots.  Tea kettle snow with a drift inland can put out some of the best "non-orograpically enhanced" snowfall rates....especially as the lowest levels winds die way down.

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BTW, for the BUF ski towns...should be a 2-3 star event, IMO.

 

Latest WRF (GFS based) mm5 from BUF meso's shows a fairly long lasting multi-lake band exiting off L. Ontario for N. Wayne, N. Cayuga, S. Oswego and Onondaga Counties....after tonight, I'd think this progged band will shrink back toward the lake much more than the model is showing.

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There were a couple of 61 mph gusts at around noon based on the station obs.

 

From the 12:48pm NWS forecast discussion:

 

 

THE STRONGEST WINDS ARE AT THE EAST END OF LAKE ONTARIO...WHERE THE

STATION ON THE PIER AT OSWEGO JUST REPORTED A 67 KNOT GUST LAST

HOUR.

 

Just about when i was out there - so that's what a 77 mph wind gust feels like...I could barely open my truck door, let alone stand up straight, so i figured it was easily over 50 mph.  70 mph+, that's pretty cool...

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