Quote:
Originally Posted by pmrid
Except for 1973-1975 and 1998-2000. So maybe not so rare.
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There have been 30 La Nina's since 1900, so, to have three consecutive requires some good odds, or a change in the odds...
The two triples listed above account for 20% of recorded La Nina's since 1900.
All but two of the la Nina's occurred after 1950.