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November II Discussion


CapturedNature

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Yeah, I think Friday will be colder. It's a better trajectory of the airmass for us. Might be a closer call down in Zuckerland...but I'd probably still lean toward Friday there too. There's a tight gradient though on the southern end of the cold in the 2nd cold shot, but should be closer to DC/VA.

The first cold shot is really extreme in the Deep South...-10 850s are all the way down to Mississippi and Alabama. I don't like the angle of the cold air though coming from the west or even WSW, which tends to moderate things and give us more downsloping. I bet the Deep South breaks some records though with radiational cooling under the 1030mb high and very cold upper air temps. 

 

Second cold shot only gets the -10C down to DC but looks pretty chilly up here. The airmasses after clippers tend to be more focused on the northern states, so we'd expect to get the brunt.

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I still would not expect much excitement heading into the beginning of December. It's a Pacific driven pattern and all stat and dynamical guidance seem to keep a weak MJO signal in the IO and eventually moving east. If we can keep the block north of AK strong, then it probably can work out to be a serviceable pattern, especially inland. Models are back and forth with that, but the overall idea has been to keep a semblance of higher heights there. Hopefully it stays around. I'm not ruling anything out, but IMHO I don't see much of a wintry pattern overall if snow is your desire.

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Thought you guys here would appreciate this forecast discussion. I am in awe of this...

 

A TROUGH OVERHEAD CONTINUES MOVING NORTHEAST THIS AFTERNOON WITH A
WELL DEPICTED RAIN-SNOW LINE ON DUAL POL IMAGERY FROM ALLEGANY
COUNTY NORTHEAST THROUGH LOWVILLE. LIGHT SNOW ON THE NORTHERN EDGE
IS FALLING INTO AN AREA JUST BARELY ABOVE FREEZING...WITH MAINLY
WET ROADS SEEN ON AREA WEBCAMS. THERE ARE SOME REPORTS OF LIGHT
ACCUMULATING SNOW OVER HIGHER ELEVATIONS...BUT THE EVENT SEEMS
LIGHT ENOUGH TO REMOVE AN EXISTING ADVISORY. THIS WILL ALLOW FULL
FOCUS ON A MUCH MORE IMPORTANT LAKE EFFECT EVENT THAT WILL DEVELOP
LATER TONIGHT INTO TUESDAY.

LATEST GUIDANCE IS NOT TOO FAR OFF FROM PREVIOUS DATASETS...AND
WILL CONTINUE WITH A HEAVY HANDED SNOW AMOUNT FORECAST...WITH SOME
LOCATIONS EXPECTED TO PUT DOWN 3-5 INCHES PER HOUR FOR SEVERAL
HOURS LATE TONIGHT INTO TUESDAY. THE FORECAST SCENARIO MATCHES
SEVERAL NEAR RECORD SETTING EVENTS...DECEMBER 2001 TO NAME
ONE. TOP 10 EVENTS FOR BUFFALO GENERALLY PUT DOWN 24 INCHES IN
24 HRS. DUE TO AN EXPECTED EXTREME GRADIENT ON THE NORTH SIDE OF
THE LAKE BAND...KBUF MIGHT OR MIGHT NOT SEE THIS...BUT SEE NO
REASON WHY OTHER AREAS JUST TO THE SOUTH WILL NOT BE ABLE TO
EXCEED 24 INCHES...AND THAT IS JUST FOR THE FIRST EVENT ENDING
SOMETIME TUESDAY NIGHT OR WEDNESDAY. THE NEXT ONE ON THURSDAY MAY
ALSO BE IMPRESSIVE...BUT THAT IS ANOTHER STORY...

500MB TEMPERATURE IS FORECAST TO DROP BELOW -40C...A TESTAMENT TO
HOW UNUSUAL THE PATTERN WILL BE BY TUESDAY AFTERNOON. HEIGHTS
ACROSS THE BOARD WILL BE SIMILARLY IMPRESSIVE...WITH 200MB WAY OF
THE CHARTS OVER A 30 YEAR CLIMATOLOGY.

WILL INCREASE FORECAST AMOUNTS A LITTLE...WITH UP TO 3 FEET IN THE
MOST HARD HIT AREAS...MAINLY JUST SOUTH OF BUFFALO AND
SOUTHTOWNS...AND OVER THE TUG HILL EAST OF LAKE ONTARIO. HAVE
CREATED ABOUT AS TIGHT OF A GRADIENT AS POSSIBLE FROM KBUF TO THE
NORTHTOWNS...WITH AMOUNTS QUICKLY DROPPING OFF TO AN INCH OR SO IN
NIAGARA COUNTY.

BLIZZARD CONSIDERATIONS...THE LATEST GUIDANCE IS SIMILAR TO
PREVIOUS GUIDANCE...WITH BORDERLINE BLIZZARD CONDITIONS OVER
WESTERN NY...AND A POSSIBLY SLIGHTLY MORE FAVORABLE SCENARIO EAST
OF LAKE ONTARIO. WILL CONTINUE TO REVIEW THE POTENTIAL SETUP THIS
AFTERNOON. COMPARISONS TO PREVIOUS NEAR AND VERIFYING LAKE EFFECT
BLIZZARDS DO NOT SHARE THE SAME PROFILE...WITH THIS EVENT
APPEARING TO BE CREATING ITS OWN STRONG WINDS WITHOUT AS MUCH
SUPPORT ALOFT. THIS IS NOT A CLEAR CUT CASE...NEED SOME MORE TIME TO
REVIEW THIS.

&&

.SHORT TERM /TUESDAY NIGHT THROUGH WEDNESDAY NIGHT/...

OFF LAKE ERIE...THE INTENSE LAKE SNOW WILL SHIFT TO THE SOUTH
THROUGH EARLY WEDNESDAY WITH THE PASSAGE OF A TROUGH CAUSING THE
LOW LEVEL FLOW TO VEER. DURING MOST OF THIS TIME...THE INTENSE
LAKE SNOWS WILL BE FOCUSED ACROSS THE BUFFALO SOUTHTOWNS... SKI
COUNTY AND NORTHERN PORTIONS OF THE WESTERN SOUTHERN TIER.

ON WEDNESDAY...THE BOUNDARY LAYER FLOW QUICKLY BACKS TO THE
SOUTHWEST CARRYING THE LAKE EFFECT SNOW BACK NORTH ACROSS THE
BUFFALO METRO AREA. BY THIS TIME THE BAND SHOULD BE IN A WEAKENING
PHASE AS INVERSION HEIGHTS BEGIN TO LOWER.

 

I am right in the middle of 30+!!!

 

StormTotalSnowFcst.png

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Buffalo soldier, how cool is it to be under a LES warning and a LES watch at the same time

 

It feels amazing. I am just really worried about getting to work/training for my new position. Really hope the thruway closes. They are calling for 2-3 feet+ for this event and another 1foot+ for the next event. Crazy!! Someone from TWC is in Hamburg, I want to get on Tv!

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