Jump to content
  • Member Statistics

    17,587
    Total Members
    7,904
    Most Online
    LopezElliana
    Newest Member
    LopezElliana
    Joined

Pattern Change thread


ORH_wxman

Recommended Posts

  • Replies 1.5k
  • Created
  • Last Reply

Coastal, I have seen a theme in which the polar highs move into the central US, which is expected during La Ninas, and then move southeastward into the TN River Valley and then the surface winds turn to the southwest across New England and we warm up. What do we need to get the highs into Qubec, Canada?

Confluence is a good way, and this is inherent on the pattern. Take 12/16/07. We had a big 1040 high north of Maine. Notice on the 500mb map that you can see air coming from the northwest. This is right on the top right part of the 500mb map. Now check out the flow over the eastern US. It's out of the southwest. You can see where the 500 height lines start to pack tightly near and just east of Maine. This is showing the air converging in the mid and especially upper levels. Now if air is converging in the mid and upper levels, it has no where to go but down. Now we have sinking air and surface high pressure. Don't forget, high pressure is also a function of very cold dense air too.

Basically what you want is a polar vortex that is east of Labrador. This is close enough to funnel in cold arctic air into sne.

Link to comment
Share on other sites

Archived

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

  • Recently Browsing   0 members

    • No registered users viewing this page.

×
×
  • Create New...