Jump to content
  • Member Statistics

    17,589
    Total Members
    7,904
    Most Online
    LopezElliana
    Newest Member
    LopezElliana
    Joined

Thanksgiving week transient cold shot and the pattern beyond


ORH_wxman

Recommended Posts

  • Replies 1.3k
  • Created
  • Last Reply

maybe this will be the kind of year where it just snows whenever possible. With the pattern of high and regular precip events maybe we will keep gettin lucky.

1993 and 2003, both were like that early on, 1993 had the interior Halloween event, the 12/11 event, and the 12/27 one...in 2003 both the 12/5 and 12/14 events occurred in so-so and hostile patterns respectively.

Link to comment
Share on other sites

Getting there Scott. Every day it's been JUST A WEE BIT better. Today the end result is a noticeable change. 12/10 and beyond could be very nice.

Its akin to having a 110* day and stating that every day since has gotten just a wee bit cooler....lol

I hear ya, though....good winter en route.

Link to comment
Share on other sites

Honestly, that's when I would set your clocks to. If it's earlier or we get a couple of snow events prior...consider it a bonus. Week 3 and 4 aren't the most stable, but it's good to see that wretched vortex gone on the weeklies.

Like I said the other day about being weary of long range guidance, except when they fit into the general scheme of things.....that has been a period targeted by many for some time and likely coincides with progression of the MJO. I buy it.

Just like I bought the extended doom and gloom.

Link to comment
Share on other sites

Scott--what's the low down on the black hole vortex over AK on the weeklies?

By week 3 and especially week 4, it's replaced with some ridging. By week 4, we have cold anomalies across western Canada, eastward through Hudson Bay. We also have a squashed east-west ridge it appears across the southern tier of the CONUS. Also weak ridging into Iceland. It's a decent looking -EPO into Aleutian. It's not like last year, but I would think it would be enough to deliver the goods...IF it occurred.

Link to comment
Share on other sites

Just got a look at weeklies, looks like we really torch first week of December, and return to near climo by week 4, but as people dismissed them beyond week 2 when it did not show what they wanted, I am positive those same people will take todays maps with the same grain of salt.

Having said that, looks like a pattern change in the making towards mid month into the holidays.

Link to comment
Share on other sites

18z GFS came in suppressed just S of N. Eng.

Not a bad look at this time frame.

Looks like there is a chance for a polar stream and intermediate stream phase in there, but the 12z Euro also lost that stream interaction. 00z had more though... This 18z GFS runs shows the two S/W shearing passed oneanother.

Much of that will come down to the amount of western N/A ridging... If heights pop a bit more that polarward S/W will dig more and subsume the intermediate tream along the MA - you'd have an interesting result, albeit progressive.

Predicated on the assumption that the CPC/CDC PNA rise is valid for D7, therein would be a possibility that the western heights are not responding just yet - it "could" be a red flag that hte 00z Euro showed more stream interaction.

Link to comment
Share on other sites

Week 4 on the weeklies has a hell of a gradient. Canada is really cold (which is finally good)

But the southern 3/4th of the country still looks quite mild.

Will, I think the winter pattern might be showing its head here, obviously a nina moderate most likely, fairly robust se ridge, NS dominated. Gradient cold, that combo could really deliver the goods across new england especially away from the south coast.

Link to comment
Share on other sites

For those of you down about the mild weather and the mild outlook, I quote to you from Sidney perley's Historic Storms of New England,

"The winter of 1801-02 was very mild, the month of January being so warm that on the twenty-fourth, the ice on the Merrimack river began to move down the stream, and on the twenty-eight, at Salem, Massachusetts, the thermometer indicated sixty degrees above zero. It was the warmest January that the people remembered. There had been but little snow, and they congratulated themselves upon the pleasant winter and the prospect of an early spring. On Sunday, the twenty-first of February, the aspect of the weather changed. The first part of the day was remarkably pleasant, but the wind soon changed to the northeast and a fierce storm came on. The storm continued for nearly a week, covering the earth with snow and sleet to the depth of several feet. Intense cold prevailed, which produced much suffering among all classes, and caused the sleet to freeze upon the snow. forming a crust so hard and thick that the people, not distinguishing the location of the roads, drove in their sleighs across lots over fences and walls." (page 134)

Link to comment
Share on other sites

They now release the weeklies twice a week?..seems like today's look much better than Monday's

Yes, but the Thursday edition rolls it out another week. Monday's version only went out to Dec 12....today's has week 4 from Dec 13-19, which is where we see the first signs of a better pattern. The Dec 5-12th week is still ugly like Monday was.

Link to comment
Share on other sites

We are 0.5C to 1C above normal at 850 on week 4. That's ok, as 850 climo starts getting chilly. We can afford to have those temps if we get systems coming from the OV. It seems like SWFE city possible.

Yeah climo has us about -3C to -4C at 850mb by mid December. As long as we don't torch, we can get some decent events in that type of gradient pattern.

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...