Jump to content
  • Member Statistics

    17,606
    Total Members
    7,904
    Most Online
    ArlyDude
    Newest Member
    ArlyDude
    Joined

Potential winter threats


tombo82685

Recommended Posts

  • Replies 1.1k
  • Created
  • Last Reply

Agreed, BUT what IF those pieces timed the phase perfectly? It DOES make me wonder!

Agreed. Was this the first time the GFS showed any southern stream system moving through late this week? I know the Euro showed it for a couple of runs and i believe the GGEM has been showing some southern stream system moving through.

Link to comment
Share on other sites

Agreed. Was this the first time the GFS showed any southern stream system moving through late this week? I know the Euro showed it for a couple of runs and i believe the GGEM has been showing some southern stream system moving through.

Kind of reminds me of what just went down last week, no? All of a sudden, Southern Stream energy got into the mix, and BOOM!

Link to comment
Share on other sites

At this point I'm pulling for NYC to come in with a top 10 coldest winter on record...we need both Jan and Feb to average below 28 to do it

I would be more sure of historic snow than historic cold at this point. For whatever reason, it's been hard to get extreme cold in the past few years. Consistent cold? Yes. Extreme cold? Less likely.

Link to comment
Share on other sites

granted its not going to verify, but its pure entertainment on the gfs the cold air it brings down from canada into the US...sub 474 thickness just above the us border, ouch...then after a snowstorm it places the pv over new england sub 504 thickness phl north..sub 486 in northern maine...850 temps -20 to -24 wow

Yeah, GFS hr 390 would be below 0F for NYC and PHL and probably -15F in the burbs with fresh snow cover. I'd be impressed with single numbers from any of the major reporting stations.

Link to comment
Share on other sites

Yeah, GFS hr 390 would be below 0F for NYC and PHL and probably -15F in the burbs with fresh snow cover. I'd be impressed with single numbers from any of the major reporting stations.

To me, we need single digits in order to qualify any winter as a "classic" winter. That was the one thing missing from last winter, was true cold.

Link to comment
Share on other sites

Yes, me too. I mean seriously. This run is insane. This reminds me of the winter of 1993-1994. Look at the over-running snows it brings the following weekend. Amazing.

That DOES have a Feb 1994 look to it! VERY cold air North of the border, not much of a low pressure system, and you just get moisture due to the thermal contrast.

Link to comment
Share on other sites

I would be more sure of historic snow than historic cold at this point. For whatever reason, it's been hard to get extreme cold in the past few years. Consistent cold? Yes. Extreme cold? Less likely.

I agree with this. And if you look at long term trends - QPF is increasing annually and seasonally, and temperatures are increasing as well. I expect this to continue.

Link to comment
Share on other sites

Not absolutely frigid, but cold enough.

EURO at 168

msl_uv850_z500%21Geopotential%20500%20hPa%20and%20Temperature%20at%20850%20hPa%21168%21North%20America%21pop%21od%21oper%21public_plots%212011010112%21%21chart.gif

GFS at 168

gfs_pcp_168m.gif

While these don't indicate subzero temperatures within 10 days, they do show a very cold look. With or without snowcover, highs will likely be in the mid 20s or so, and lows in the teens. With snowcover, that's a look that would support single digit lows, at least in the suburbs.

Beyond a week or so, things look more interesting--I know several have been harping on the potential between the 11th and 14th, which certainly looks great at the moment. With a resurgent STJ, who knows... but a period of sustained cold looks likely to begin tomorrow through to...?

Link to comment
Share on other sites

I think it's premature to say it will just "continue". We very well COULD be in a cycle right now!

That's true. In fact I'm sure we're in some kind of cycle - probably several different cycles superimposed. But I suspect the overall upward temperature trend is irreversible for a variety of reasons. I'm less sure about the increase in precip.

Link to comment
Share on other sites

Took a few days off but I am glad to return to see a threat of winter weather. It seems we have a PV setup on our hands and those are always extremely difficult to forecast. At this range, you might as well pick a solution out of the grab bag. Guidance just can't handle the vorticity moving around the fast flow and the Polar Vortex itself. That being said, it's definitely good to see the GFS modeling the potential for a light snow event as soon as 102-ish hours. I'm sure all of us will take it. Problem with that setup is the baroclinic zone displacement. I think there's too much being made of the primary surface low position in the Great Lakes. This is a polar vortex with a ton of energy to work with...and it's early to mid January. The surface low in the lakes isn't going to have much of a negative impact with the modeled H5 heights and H85 temps near or below -10 C.

Still, I have to say this. If the modeling is near correct...I am extremely, extremely excited. There is absolutely brilliant Miller B snow potential here with a big shortwave coming out of Alberta and getting an extra southward boost from the big PV gyre. The Miller B potential is going to be displaced to the south if it does occur in this time frame given the degree of blocking over Baffin Island and even back into Central Canada. Potential exists for significant redevelopment given this upper air chart. I'll say this...we will see some mouth watering model solutions the next 2-4 days. Consider me interested.

f132.gif

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...