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Upstate NY/North Country + adjacent ON, QC, VT: End of Fall/Into Winter!


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70%+ chance of 12+

 

 

 

We're at 30%-40% on the WPC point map, so in the gradient on the image file map you posted. Better than being in 0%, right? I'm not going to be pessimistic about this, despite how this winter has played out for North Buffalo so far.

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We're at 30%-40% on the WPC point map, so in the gradient on the image file map you posted. Better than being in 0%, right? I'm not going to be pessimistic about this, despite how this winter has played out for North Buffalo so far.

 

The NWS just sent me this as the top analog for this system. Looks like we all get in on the action.

 

COOP_C75_gfs212F072.png

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We're at 30%-40% on the WPC point map, so in the gradient on the image file map you posted. Better than being in 0%, right? I'm not going to be pessimistic about this, despite how this winter has played out for North Buffalo so far.

FWIW the 18z models quickly veer the winds after 12z Friday and keep it near the far southern Erie county till Saturday, it looks like a 2-4" followed by a quick 3-6" dump for the northtowns..

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FWIW the 18z models quickly veer the winds after 12z Friday and keep it near the far southern Erie county till Saturday, it looks like a 2-4" followed by a quick 3-6" dump for the northtowns..

 

Don't always trust the models with wind forecast this far out. I was predicted 1-2 inches last night and this is why we got more.

 

post-16592-1420598541.gif

 

Frictional Convergence

 

post-16592-1420598938_thumb.jpg

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I guess I don't understand because those analogs were lake effect storms that mostly/all hit the Southern Tier/Ski Country. Except the 95 one.

 

You're right. Top 5 analogs for friday produced the following events.

 

12-11-2009

 

EventSnowFall_2009_12_10.png

 

Maximum Snowfall: Lake Erie 27" (Springville); Lake Ontario 40" (Highmarket) 

Duration: 54 hours +/- 

Prime Feature: Classic WSW event, all ingredients prime. Well inland extent.

 

 

This was quite an event to start the season. Surface winds were very strong with resulting in considerable blowing snow and whiteout conditions at times. The NYS thruway was closed between Dunkirk and the PA line with hundreds of motorists stranded. The Buffalo and Rochester metro areas were affected as well, although major impacts were restricted to Buffalo's South Towns. Snowfall totals were extreme in the heavier areas. It therefore earns five ***** stars.

 

12-23-2000

 

20001222/1915 Heavy Snow WFO: BUF Damage: $20.00K Crop: $ Injuries: 0 Fatalities: 0 This lake effect event began as some of the coldest air of the season crossed the Great Lakes. Meandering snow squall produced snowfall rates of two inches an hour. The activity began off Lake Erie during the early morning hours of the 22nd as a cold front crossed the region. The band set up across the Buffalo southtowns with schools across those areas forced to close. During the afternoon, the band lifted north into the city of Buffalo and adjacent suburbs. The band drifted south during the evening hours. A similar scenario developed off Lake Ontario during the mid to late morning hours, then drifted south in the late evening. Specific reports off Lake Erie: 14"" at West Seneca, 12"" at Hamburg, 11"" at Perrysburg and 9"" at Stockton. Off Lake Ontario: 24"" at Hooker, 19"" at Lowville; 16"" at Oswego, and 15"" at North Rose.

 

1-21-2008

 

Maximum Snowfall: Lake Erie 25" (Perrysburg); Lake Ontario 37" (Fulton) 

Duration: 60 hours +/- 

Prime Feature: Classic westerly flow event. Very dry and cold airmass, but great parameters ohterwise. Longevity and little shear.

 

1-03-1995

 

Can't find anything

 

1-19-1994

 

Can't find anything

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The thing that caught my eye from their forecast was this.

 

THE BAND WILL LIKELY SWING THROUGH FAIRLY QUICKLY AS THE
FLOW CONTINUES TO VEER TO A MORE WEST SOUTHWEST ORIENTATION BY MID
DAY WITH A SIGNIFICANT LAKE BAND SETTING UP ACROSS THE DISTANT
BUFFALO SOUTHTOWNS AND NORTHERN PORTIONS OF THE SOUTHERN
TIER...REMAINING THERE WELL INTO SATURDAY.

 

I think this is a Colden/Boston Hill/Springville special.

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The thing that caught my eye from their forecast was this.

 

THE BAND WILL LIKELY SWING THROUGH FAIRLY QUICKLY AS THE

FLOW CONTINUES TO VEER TO A MORE WEST SOUTHWEST ORIENTATION BY MID

DAY WITH A SIGNIFICANT LAKE BAND SETTING UP ACROSS THE DISTANT

BUFFALO SOUTHTOWNS AND NORTHERN PORTIONS OF THE SOUTHERN

TIER...REMAINING THERE WELL INTO SATURDAY.

 

I think this is a Colden/Boston Hill/Springville special.

If this can hang up a little further north you'll be on a fast track to 200" for the season.  Crazy.    

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If this can hang up a little further north you'll be on a fast track to 200" for the season.  Crazy.    

 

Nearly all from lake effect too. Only 2 synoptic events were the one from early Dec. where I got like 6.5 inches and the Mesolow which gave me 4 inches I believe. The rest are lake enhanced/snow events. This is why I don't mind warmer temperatures in Dec. It opens up the possibility for what happened last night and over the next few days.

 

I'm a pessimist so yeah sorry, I'm just hoping the band stays as organized as models suggest. Been disappointed too often with high wind, some directional shear events like this before.

 

Yeah I don't think wind shear will be a big deal this go around, moisture will be plentiful as well. Wind direction will be the player here.

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KBGM typo? lol

NORTHERN ONEIDA COUNTY MAY GET ENOUGH SNOW TO MAKE ADVISORY
CRITERIA LATE THU NIGHT TO FRIDAY NIGHT BEFORE IT SHIFTS SOUTH.
THE BEST SNOW OF SEVERAL FEET WILL AGAIN BE JUST NORTH OF THEM.
COULD BE A CLOSE CALL. FOR NOW HAVE INCLUDED THE THREAT IN THE HWO
AND HAVE NOT ISSUED A WATCH FOR LES

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Woow!! :arrowhead:

VERY ACTIVE WEATHER PATTERN CONTINUES THROUGH THE NEAR TERM

FORECAST. WE WILL SEE THE CONCLUSION OF A NEAR ADVISORY/ADVISORY

LAKE EFFECT EVENT THIS EVENING OFF OF BOTH LAKES. A CLIPPER SYSTEMS

WILL PUSH ACROSS THE FORECAST AREA TONIGHT BRINGING A WIDESPREAD

GENERAL LIGHT SNOWFALL OF A COUPLE TO A FEW INCHES. IMMEDIATELY

FOLLOWING THE GENERAL SNOWFALL...A SIGNIFICANT LAKE EFFECT WILL

IMPACT THE MORNING COMMUTES FRIDAY MORNING IN THE BUFFALO METRO

AREA...AND THE WATERTOWN AREA. HEAVY LAKE EFFECT SNOW WILL THEN

CONTINUE EAST OF THE LAKES THROUGH SATURDAY /FURTHER DISCUSSED IN

THE SHORT TERM/. SNOWFALL RATES OVER 3 INCHES PER HOUR OFF OF BOTH

LAKES ERIE AND ONTARIO ARE EXPECTED...WITH TOTALS PUSHING 2 TO 3

FEET OFF OF LAKE ERIE AND 3 TO 5 FEET OFF OF LAKE ONTARIO BY

SATURDAY EVENING.

OVERALL SYNOPTIC SETUP REMAINS LARGELY UNCHANGED WITH BROAD CYCLONIC

FLOW OVER THE FORECAST AREA. SOUTHWESTERLY FLOW AHEAD OF THE

APPROACHING SHORTWAVE TROUGH HAS MOVED THE CURRENT LAKE EFFECT BANDS

NORTH AND EAST OF THE LAKES...ACROSS NORTHERN JEFFERSON AND NIAGARA

COUNTIES. THE CURRENT BANDS WILL CONTINUE TO DIMINISH THIS EVENING

WITH LOWER CAPPING INVERSION AND DRY AIR ABOVE THE BOUNDARY LAYER.

OUTSIDE OF THE LAKE EFFECT BANDS...SOME SUN HAS BROKEN THROUGH THIS

AFTERNOON. CLOUD COVER WILL INCREASE THIS EVENING...THEN A

WIDESPREAD LIGHT SNOWFALL WILL SWEEP ACROSS THE FORECAST AREA WITH

THE SYNOPTIC FORCING FROM THE SHORTWAVE TROUGH. OVERALL EXPECT

SNOWFALL TOTALS DUE TO THE SYNOPTIC SNOWFALL WILL BE ONLY AROUND A

COUPLE OF INCHES. NORTHEAST OF THE LAKES...THE SYNOPTIC SNOWFALL

WILL INITIALLY BE LAKE ENHANCED...BUT AS THE SYNOPTIC WAVE STARTS TO

DEPART...THE STRONG SINGULAR LAKE EFFECT SNOW BANDS WILL START TO

DOMINATE.

OFF OF LAKE ERIE...INITIALLY...230 FLOW WILL KEEP LAKE ENHANCED

SNOWFALL ACROSS NIAGARA...ORLEANS...GENESEE AND NORTHERN ERIE COUNTY

AROUND MIDNIGHT. THE EMBEDDED LAKE ENHANCEMENT WITHIN THE SYNOPTIC

SNOW WILL BECOME MORE EVIDENT AFTER MIDNIGHT AS THE SYNOPTIC FORCING

STARTS TO DEPART...AND LAKE PARAMETERS BECOME INCREASING FAVORABLE

IN THE COLD ADVECTION BEHIND THE WAVE. THE FLOW WILL SLOWLY TURN

MORE 240 TO 250 BEFORE SUNRISE...ALLOWING THE LAKE BAND TO SAG

SOUTHWARD ACROSS BUFFALO NORTHTOWNS AND DOWNTOWN BUFFALO AREA. ALL

LAKE EFFECT PARAMETERS ARE EXTREMELY IMPRESSIVE AS THIS BAND IS

FORECAST TO MOVE THROUGH THE BUFFALO METRO AREA. WELL ALIGNED AND

STRONG SOUTHWESTERLY FLOW /WITH WINDS OVER 35KTS/ WILL HELP TO FOCUS

A SINGULAR LAKE EFFECT BAND. DEEP MOISTURE WILL STILL BE HANGING

AROUND JUST BEHIND THE SYNOPTIC SYSTEM...WHICH ALONG WITH

EQUILIBRIUM LEVELS PUSHING OVER 12KFT AND STRONG LOW-LEVEL

OMEGA...WILL RESULT IN A LAKE BAND CAPABLE OF 3+ INCH/HR SNOWFALL

RATES. HIGH RESOLUTION MODELS ARE IN EXCELLENT AGREEMENT ON THE

OVERALL PLACEMENT AND INTENSITY OF THIS SINGULAR BAND OFF LAKE ERIE.

HAVE DECIDED TO ADD NORTHERN ERIE AND GENESEE COUNTIES TO THE LAKE

EFFECT SNOW WARNING THROUGH FRIDAY MORNING. ALSO ADDED NIAGARA AND

ORLEANS COUNTY TO A LAKE EFFECT SNOW ADVISORY FOR THAT TIME PERIOD.

BY LATE FRIDAY MORNING THROUGH FRIDAY EVENING THE BAND WILL PUSH

SOUTH ACROSS SOUTHERN ERIE COUNTY AND THE WESTERN SOUTHERN

TIER...STILL CAPABLE OF 2 TO 3 INCH/HR SNOWFALL RATES. THE BAND

WILL LIKELY SHOW SOME NORTH TO SOUTH MOVEMENT THROUGH FRIDAY

AFTERNOON AS WIGGLES IN THE FLOW ASSOCIATED WITH WEAK SHORTWAVES

PUSH THROUGH. MODELS SHOW SOME UNCERTAINTY IN HOW THE BAND WILL

BEHAVE ONCE IT PUSHES SOUTH...WITH SOME MODELS BREAKING THE BAND

APART ACROSS THE SOUTHERN TIER BEFORE IT REFORMS AND SHIFT NORTH BY

LATE AFTERNOON. BUFKIT PROFILES SHOW THE MEAN FLOW ONLY MAKES IT TO

ABOUT 260/265 DEGREES...AND THUS THE BAND SHOULD NOT PUSH SO FAR

SOUTH AS TO BE DISRUPTED. THIS FORECAST FOLLOWS THE BUFKIT SOUNDINGS

AND MEAN WIND DIRECTIONS...KEEPING THE BAND INTACT THROUGH THE

AFTERNOON AND KEEPING SNOW RATES UP.

OFF OF LAKE ONTARIO...LAKE PARAMETERS ARE JUST AS IMPRESSIVE AS OFF

OF LAKE ERIE...AND THE BAND WILL SIMILARLY START TO THE NORTH AS

LAKE ENHANCEMENT IN THE SYNOPTIC SNOW...WITH AN IMPRESSIVE LAKE BAND

BEING REVEALED BY THE TIME THE SYNOPTIC WAVE DEPARTS. THE BAND SHOULD

START ACROSS NORTHERN JEFFERSON COUNTY AND SHIFT SOUTH INTO CENTRAL

JEFFERSON...NORTHERN LEWIS THROUGH FRIDAY AFTERNOON...FOCUSING THE

HIGHEST SNOWFALL AMOUNTS ACROSS THE TUG HILL...WHERE UPSLOPE IN THE

WESTERLY FLOW WILL ADD ADDITIONAL ENHANCEMENT. SNOWFALL RATES OFF

LAKE ONTARIO WILL SIMILARLY PUSH OVER 3 INCHES AND HOUR IN THE BAND.

WINDS WILL BE ANOTHER LARGE PROBLEM IN BOTH OF THESE BANDS WITH

GUSTS OF 40 TO 45 MPH POSSIBLE AT TIMES...ESPECIALLY ALONG THE EDGES

OF THE BANDS WHERE THE STRONGER WINDS TEND TO FOCUS. THIS WILL

CREATE PROBLEMS FROM BLOWING SNOW IN ADDITION TO THE

SNOWFALL...WHICH WILL HELP TO PUSH VISIBILITIES TO NEAR ZERO AT

TIMES AROUND BOTH SNOW BANDS.

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