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


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Wow, that was quick. It's tough to say how much fell since there's a bit of blowing and drifting going on, but it's probably a stretch to say we even picked up 1" here. It was basically a 30-minute snow squall.

 

Oh well, at least my flight shouldn't have any issues. As always, It's been enjoyable experiencing the rapidly changing wx that is so common in western New York. Since Saturday I've experienced a rainstorm, a little bit of ice, 60-degree temperatures, a 4" lake effect event, near-zero temperatures, and a snow squall. Not bad! Good luck to everyone with "round two" of this LES event later tonight.

 

Have a safe trip back! The freezing process has begun. =(

 

lice-00.gif

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That freezing process will rapidly accelerate next week, too. There is pretty strong model consensus that we are really heading into the deep freeze in the 6-10 day period. In fact, check out these h85 temps on last night's run of the Canadian model (GGEM):

 

post-619-0-03941100-1388080899_thumb.gif

 

Granted the core of the coldest air is directly a little bit farther east into northern New York and northern Vermont, but I don't believe I have ever seen h85 temps of -34C to -36C progged in the NEUS before. That would potentially rival the historic arctic outbreak of December 1980!

 

The Euro has occasionally been bringing extremely low (-30C) h85 temps into the NEUS late next week as well, so it's not like this is just one random run of the Canadian - it has occasionally been flagged by other models as well. Definitely a frigid signal heading into the New Year.

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Haven't measured yet but probably 1 to 2 ft.  The owner of the chalet we are in said there was about 5 feet until the rain and warm temps.  Definitely not as much as I thought there was going to be since they got about 7 ft of snow in a few days back a couple weeks ago.

 

Had a heavy burst from the current band but we are stuck on the southern end of the band and in and out of it right now.  Probably picked up an inch or so though.

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Looks like a pretty decent period shaping up this week for snowfall. A lake enhanced event Monday Night-Tuesday followed by a clipper, and another long duration event possible Weds Night into Friday.

We also look to go into the icebox with temperatures.  This board sure is more quiet than it used to be years ago when I posted..

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We also look to go into the icebox with temperatures.  This board sure is more quiet than it used to be years ago when I posted..

 

Yea I migrated over to the Ohio/Great Lakes section. That's where I post most often now, since there are Cleveland posters and Toronto posters. Close enough to us since this sub-forum is dead. It is weird that its so dead since we have some of the best winters in the entire country.

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Yea I migrated over to the Ohio/Great Lakes section. That's where I post most often now, since there are Cleveland posters and Toronto posters. Close enough to us since this sub-forum is dead. It is weird that its so dead since we have some of the best winters in the entire country.

I just popped over to that forum as well.  Great discussion over there.  Trying to see what the Euro showed for my area Wednesday night - Friday.  QPF looks great for your area..

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Euro QPF output. All of this is snow. With how cold it's going to be this is easily 15 inches+ if it comes to fruition. ^_^

 

 

euro_BUF_132hr.jpg

that looks way too high compared to the maps I've looked at for the Thursday snowstorm.  Is that precip total over several days?  I thought the Euro looked more like in the 0.50-0.75 range here.  

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ahh cool okay.  I'm thinking 2-4" on Tuesday with the lake enhancement and then somewhere in the 4-8" range with the Miller B nor'easter on Thursday.  

 

Yeah, that's what I was thinking as well. Went to my parents house in Amherst and they have a ton more snow on the ground and in the piles than here. Hopefully the entire area can cash in this week. What are your thoughts on the Ice Age coming following this storm? ^_^

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ahh cool okay.  I'm thinking 2-4" on Tuesday with the lake enhancement and then somewhere in the 4-8" range with the Miller B nor'easter on Thursday.  

Looking at the NAM and Hi Res NAM at 00z.. looks like some decent lake enhancement/LES Tuesday/Tuesday night east of Lake Ontario.. wouldn't be surprised if we see some 6"+ amounts up my way in Altmar/Orwell, area.  Good 1st call on the Thursday event.  Sounds reasonable.

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Looking at the NAM and Hi Res NAM at 00z.. looks like some decent lake enhancement/LES Tuesday/Tuesday night east of Lake Ontario.. wouldn't be surprised if we see some 6"+ amounts up my way in Altmar/Orwell, area.  Good 1st call on the Thursday event.  Sounds reasonable.

yeah my call for was more metro BUF...I'd think the southern Erie/Wyoming/Chautauqua etc. off of Erie and especially east of Ontario would get more on Tuesday and Tuesday night with the LES.  

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NWS BUF AFD

 

THE AIRMASS IS PLENTY COLD ENOUGH TO SUPPORT A RESPONSE FROM THE

LAKES HOWEVER...WITH A COMPLEX LAKE ENHANCED SNOW SCENARIO APPEARING

LIKELY. LAKE INDUCED EQUILIBRIUM LEVELS RISE TO AROUND 10K FEET NEAR

THE TIME OF THE COLD FRONTAL PASSAGE...FOLLOWED BY A PERIOD OF

MODERATE INSTABILITY AND EQUILIBRIUM LEVELS AROUND 9K FEET TUESDAY

AFTERNOON AND EVENING. THE BETTER INSTABILITY WILL FADE TUESDAY

NIGHT OFF LAKE ERIE AS SURFACE HIGH PRESSURE BUILDS NEAR THE LAKE...

BUT WILL LINGER INTO WEDNESDAY MORNING OFF LAKE ONTARIO.

OFF LAKE ERIE...

LATEST MESOSCALE MODEL GUIDANCE CONTINUES TO SUGGEST A BAND OF

MODERATE TO HEAVY LAKE ENHANCED SNOW WILL DEVELOP ACROSS THE NIAGARA

FRONTIER EARLY IN THE MORNING...THEN SWING SOUTH ACROSS THE BUFFALO

METRO AREA DURING THE MID MORNING BEFORE SETTLING INTO SOUTHERN

ERIE/WYOMING COUNTIES AND EVENTUALLY THE SOUTHERN TIER DURING THE

AFTERNOON. THE SNOW WILL NOT LAST LONG ACROSS THE NIAGARA FRONTIER

OR IMMEDIATE BUFFALO AREA...BUT THE INSTABILITY AND STRONG

CONVERGENCE MAY SUPPORT HIGH SNOWFALL RATES FOR A BRIEF PERIOD OF

TIME AND DUMP A QUICK 2-4 OR 3-5 INCH ACCUMULATION.

BY AFTERNOON WITH THE CLIPPER PULLING AWAY THE LAKE ENHANCEMENT WILL

TRANSITION INTO MORE PURE LAKE EFFECT ON WESTERLY FLOW ACROSS THE

SOUTHERN TIER. THE BOUNDARY LAYER FLOW WILL CONTINUE TO VEER MORE

WNW BY TUESDAY EVENING. THE CONSTANT CHANGE IN WIND DIRECTION WILL

LIMIT THE RESIDENCE TIME OF THE BAND OVER ANY ONE LOCATION...SO THIS

SHOULD KEEP AMOUNTS IN THE ADVISORY RANGE ACROSS THE WESTERN

SOUTHERN TIER. THE MOST PERSISTENT BANDS MAY PRODUCE 4-8 INCHES IN

SOME SPOTS TUESDAY AND TUESDAY EVENING.

LATER TUESDAY NIGHT AND WEDNESDAY THE LAKE EFFECT SHOULD SLOWLY

DIMINISH TO SCATTERED LIGHT SNOW SHOWERS ACROSS THE SOUTHERN TIER AS

INVERSION HEIGHTS LOWER TO AROUND 5K FEET.

WITH THE ABOVE IN MIND...WE WILL GO WITH AN ADVISORY FOR NORTHERN

ERIE AND GENESEE COUNTIES FOR A BRIEF HEAVY BAND OF SNOW TUESDAY

MORNING. ADVISORIES WILL ALSO BE POSTED FROM SOUTHERN ERIE AND

WYOMING COUNTIES INTO THE SOUTHERN TIER TUESDAY AND TUESDAY EVENING.

FOR NOW HAVE LEFT ALLEGANY COUNTY OUT...BUT FAIRLY STRONG BOUNDARY

LAYER WINDS MAY BRING SOME DECENT SNOW WELL INLAND AND INTO PORTIONS

OF THAT COUNTY. IF CONFIDENCE GROWS IN THAT SCENARIO THEY CAN BE

ADDED TO THE ADVISORY.

OFF LAKE ONTARIO...

LATEST MESOSCALE MODEL GUIDANCE SUPPORTS AN AREA OF LAKE ENHANCED

SNOW DEVELOPING OVER JEFFERSON COUNTY BY EARLY AFTERNOON. THIS WILL

QUICKLY SHIFT SOUTH ACROSS THE TUG HILL REGION DURING THE AFTERNOON

AND TRANSITION INTO A MORE PURE LAKE EFFECT BAND BY LATE AFTERNOON

AS ANY CLIPPER SNOW PULLS AWAY. THE BAND SHOULD REMAIN MOBILE AND

QUICKLY DROP INTO OSWEGO COUNTY BY EARLY EVENING. SIMILAR TO LAKE

ERIE...SNOWFALL RATES COULD BECOME QUITE HIGH GIVEN THE INSTABILITY

AND STRONG CONVERGENCE...BUT WITH THE BAND MOVING STEADILY SOUTH

THIS SHOULD LIMIT ACCUMULATIONS TO THE ADVISORY RANGE THROUGH LATE

TUESDAY. THE TUG HILL MAY GET CLOSE TO WARNING CRITERIA WITH AN

ADDED BOOST OF UPSLOPE FLOW...BUT FOR NOW WILL KEEP AMOUNTS IN THE

4-8 INCH RANGE EAST OF THE LAKE TUESDAY.

TUESDAY NIGHT THE BAND WILL SETTLE FURTHER SOUTH AND END UP IN

SOUTHERN OSWEGO COUNTY AND ALSO PORTIONS OF NORTHERN CAYUGA/WAYNE

COUNTIES. LATEST NAM SUGGESTS A DYNAMIC UPSTREAM CONNECTION TO

GEORGIAN BAY MAY DEVELOP FOR A FEW HOURS. LATER TUESDAY NIGHT INTO

WEDNESDAY MORNING THE NAM OMEGA PLUME SIMULATION OF THE LAKE

EFFECT BAND TAKES ON ANTICYCLONIC CURVATURE...EXTENDING INTO THE

FAIR HAVEN/OSWEGO AREAS. PAST EXPERIENCE SHOWS THESE BANDS CAN

PRODUCE HIGH SNOWFALL RATES AS LOW LEVEL CONVERGENCE INCREASES FROM

LAND BREEZE CIRCULATIONS. CONVERGENCE IN GENERAL WILL ALSO FOCUS ON

THIS BAND OVERNIGHT AS AN ARCTIC BOUNDARY SITS OVER LAKE ONTARIO.

UNLIKE DURING THE DAY TUESDAY...IT APPEARS THE BAND MAY SIT IN ONE

PLACE LONG ENOUGH TO PRODUCE HIGHER ACCUMULATIONS TUESDAY NIGHT INTO

WEDNESDAY MORNING SOUTHEAST OF THE LAKE.

WITH THIS IN MIND...WILL COVER JEFFERSON AND LEWIS COUNTIES WITH AN

ADVISORY FOR A FAST MOVING YET STRONG BAND TUESDAY. HAVE THEN GONE

WITH A WATCH TUESDAY AFTERNOON THROUGH MIDDAY WEDNESDAY FOR OSWEGO

COUNTY AND TUESDAY EVENING THROUGH MIDDAY WEDNESDAY FOR WAYNE AND

NORTHERN CAYUGA COUNTIES WITH HIGHER AMOUNTS POSSIBLE.

OUTSIDE OF LAKE EFFECT AREAS ON WEDNESDAY...SOME LIGHT SNOW MAY

DEVELOP ACROSS WESTERN NY LATER IN THE DAY AS WARM ADVECTION

INCREASES AHEAD OF THE NEXT SYSTEM. AMOUNTS WILL BE LIGHT AT FIRST.

HIGHS ON WEDNESDAY WILL BE WELL BELOW AVERAGE WITH TEENS IN MOST

LOCATIONS AND SINGLE NUMBERS ACROSS THE NORTH COUNTRY.

-- End Changed Discussion --
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