Jump to content
  • Member Statistics

    17,584
    Total Members
    7,904
    Most Online
    LopezElliana
    Newest Member
    LopezElliana
    Joined

Moving Through December - Changing Patterns and Changing Diapers


ChrisM

Recommended Posts

  • Replies 2.5k
  • Created
  • Last Reply

Yeah a few of us were thinking that earlier today. While others said it was impossible..Esp. With NAO going neg and a cold HP in E Canada. all you have to do is go back to last Tuesday snow event from Jersey north and the snow / ice we had this weekend. You get a high up there, and neggy NAO,you likely won't cut a storm

enjoy your hour of sleet sunday night

Link to comment
Share on other sites

My temperature here in Central NH reached its high at 6am. Even with increasing sunshine past couple of hours the temp is slowly coasting down. High was 45.6F early this AM but now 43.9F at noon

Yeah high of 48.5F at 6:25am and down to 46.2F at 12:30pm. Still pretty torchy as we should be barely reaching 39-40F on 12/3, but not too bad. Feels like a torch day with windy conditions and all the snow gone. Hopefully 12/9-12/10 plays out in our favor.

Link to comment
Share on other sites

Man have you flip flopped

Not really...the time period has been post-10th...if that 12/12 system doesn't work out, then its a virtual punt of the first half of December...we've done this many times in the past...most recently 2010. 2008 too.

Still liking the overall pattern look though leading toward Christmas. Hopefully we cash in.

Link to comment
Share on other sites

BUF NWS put out a detailed long-range discussion today. Seems to echo a good deal of what the mets have been posting here recently.

LOOKING FURTHER DOWN THE ROAD...

AS MENTIONED IN THE OPENING PARAGRAPH TO THIS LONG TERM SECTION...

THERE IS A SUGGESTION BY MEDIUM RANGE MODELS THAT SIGNIFICANT

RIDGING MAY SET UP OVER THE NORTH ATLANTIC DURING THE SECOND FULL

WEEK OF THIS MONTH. THE ECMWF AND A MAJORITY OF THE GEFS ENSEMBLES

SUPPORT THIS SCENARIO...WHICH WOULD MEAN AN AMPLIFIED TROUGH-RIDGE

PATTERN OVER EASTERN NORTH AMERICA AND THE NORTH ATLANTIC. THIS

WOULD LEAVE THE DOOR OPEN FOR SEASONABLY COLD AIR TO WORK SOUTH FROM

NORTH CENTRAL CANADA...WHERE COLD AIR SHOULD BE INTENSIFYING THE

NEXT 10 DAYS.

THE SOLUTION BEING PORTRAYED BY THE AFOREMENTIONED GUIDANCE PACKAGES

WOULD FAVOR A BROAD BASED TROUGH SETTING UP OVER THE MISSISSIPPI AND

LOWER OHIO VALLEYS...WITH THE COLDER AIR TAKING MORE A MORE

CIRCUITOUS ROUTE ACROSS THE MID WEST BEFORE MAKING ITS WAY TO OUR

FORECAST AREA. THIS ROUTE WOULD FAVOR SIGNIFICANT LAKE SNOWS EAST

AND NORTHEAST OF LAKES ERIE AND ONTARIO...INCLUDING THE BUFFALO

AREA. THE AIRMASS WOULD NOT BE ANOMALOUSLY COLD...BUT ALL THAT WOULD

BE NEEDED IS FOR H85 TEMPS TO BE IN THE VCNTY OF -8C OR LOWER.

IN TERMS OF THE REAL COLD AIR...THERE HAVE BEEN TWO MAIN CORES OF

ARCTIC AIR THE PAST TWO WEEKS WITH ONE OVER SIBERIA AND THE OTHER

OVER THE CANADIAN ARCTIC. UNUSUALLY STRONG RIDGING OVER SIBERIA THIS

WEEK WILL DISPERSE/DISPLACE THE AIRMASS ON THE OTHER SIDE OF THE

POLE...WHILE THE ARCTIC AIR ON THIS SIDE OF THE POLE IS EXPECTED TO

INTENSIFY SOMEWHAT. WHILE THIS COLD AIR WILL NOT MAKE IT DOWN TO THE

LOWER 48 ANYTIME SOON...IT IS WORTH NOTING.

ALSO WORTH MENTIONING IS THAT THE PERSISTENT MID LEVEL JET THAT

CROSSED NORTH AMERICA AND NEARLY ENCIRCLED THE GLOBE (AT ROUGHLY

40-50N) AT THIS TIME LAST YEAR IS IN A MUCH WEAKER STATE THIS FALL.

THE MERIDIONAL FLOW AT H7 IS MORE ANOMALOUS IN NATURE...WHICH

SUGGESTS MUCH MORE CONDUCIVE CONDITIONS FOR BLOCKING AND A HIGHER

CHANCE FOR COLD AIR INTRUSIONS. PART OF THIS IS DUE TO THE FACT THAT

THE ICELANDIC LOW HAS BEEN WEAKER THIS FALL AND HAS ACTUALLY GIVEN

WAY TO RIDGING SEVERAL TIMES.

TO SUMMARIZE...WHILE TEMPERATURES WILL AVERAGE A LITTLE ABOVE NORMAL

LATE THIS WEEK AND THROUGH NEXT WEEKEND...A STRETCH OF SEASONABLY

COLD WEATHER WILL SET UP DURING THE SECOND WEEK OF DECEMBER. NO

ANOMALOUSLY COLD WEATHER IS EXPECTED THOUGH.

Link to comment
Share on other sites

i'd think 12/10 period could certainly swing colder and that scooter is just stating what's possible. HM mentioned punting nearly the whole month of december as a possibility a week ago

It's really ashame the wave 2 to wave 1 configuration in the stratosphere went down and is going down like it is because I think it is the thing that ultimately ruined the NAO. Of course, the month just started so we have a long way to go.

Isotherm, I meant "ineffective NAO" as in the charts may register negative and there may be a thumb ridge into the E / E-C regions but it does very little to combat the SE ridge / RNA pattern outside of maybe the Upper Midwest-New England corridor.

Link to comment
Share on other sites

I wouldn't rule out a virtual first half December punt.

Down in the Mid Atlantic, I wouldn't rule out a virtual December punt altogether.

The NA mountain torque spike is happening now...the wave 2 is happening now... the MJO pulse through the IO is happening now... the low sun is happening now...

All of these things can only change for the worse the deeper we move into December right?

Link to comment
Share on other sites

Close to meltdown mode with this wx today/ tomorrow... No comment

Well Will is right. There are several posts in the other thread from myself and others stating that it was around 12/10 when we would start to see changes in the pattern to allow more cold into the CONUS and thus begin the transition. I know I specifically said that is does not mean an abrupt change to cold and snow here locally on that date. I even said it may take several days after that, but none of us could possibly say exactly when. I don't think anything has changed regarding that time. I can't help it, if people think it means the onslaught of 3' snowpack..it simply means a change to a pattern that allows for more wintry chances.

Perhaps your damaging ice storm trends colder next week.

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

Guest
This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.

×
×
  • Create New...