Jump to content
  • Member Statistics

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

Winter 2011-2012


ORH_wxman

Recommended Posts

  • 2 years later...
  • Replies 1.7k
  • Created
  • Last Reply

From my posts in the Mid Atlantic forum...

We might see another Neg A O winter coming up...Since 1950 Aug. 2011 has the third lowest AO index...all the analogs below had a lower AO value in the winter months.....

year...Aug.AO index...Winters low value

1977.....-1.412.....-3.014 Feb...

1964.....-1.207.....-2.084 Feb...

2011.....-1.063.....-3.451 Jan...

1960.....-1.008.....-1.506 Jan...

1950.....-0.851.....-1.928 Dec...

1987.....-0.836.....-1.066 Feb...

1986.....-0.826.....-1.473 Feb...

years with at least one month with an AO index -2.000 or lower...

1955-56

1956-57

1957-58

1958-59

1959-60 five straight years

1962-63

1964-65

1965-66 eight of eleven years

1967-68

1968-69

1969-70 three straight years

1976-77

1977-78

1978-79

1979-80 four straight years

1983-84

1984-85

1985-86 three straight years

1995-96

1997-98

2000-01

2009-10

2010-11 two years

it looks like we could have a third straight winter with at least one month with an AO -2.000...It worked wonders the last two years but not so good for some other years...almost every time there were two straight years at least one more followed...1976-77 and 2009-10 had Dec/Jan/Feb all below -2.000...There were only three winters between 1986 and 2008 with a monthly ao index lower than -2.000...Are we in a downward cycle of the AO?

looking back at this the AO did go negative late January and early February but most of the rest of the winter was quite positive...It did get lower than any of the previous August lows but it was to brief...January and February actually averaged a little negative while December and March were positive...

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...