How'd We Miss Summer? | NBC Bay Area

How'd We Miss Summer?

California's 'invisible summer' slips away.

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    NEWSLETTERS

    (Published Tuesday, Sept. 21, 2010)

    There's no need to root around the closet for sweaters and jackets: Californians never really put them away this year.

    Summer in the Golden State was marked by below-normal temperatures while many other parts of the U.S. and other countries sweltered in persistent heat.

    Jet Propulsion Laboratory oceanographer and climate scientist Bill Patzert calls it the "invisible summer."

    Patzert says the cause was a stalled jetstream pattern in the Northern Hemisphere that created a semipermanent trough of low pressure from Alaska to southern Baja California and kept the entire west coast of North America cool.

     Fall begins Wednesday night.