Understanding Polar Jet Streams

During the winter of 1976-1977, global cooling and large amounts of Arctic sea ice produced this jet stream pattern.  It caused very cold temperatures in the Eastern US, and warmth, drought and fire to the western US.

In February 1977  the Sierra snowpack—a scant quarter of normal—reached down only to 6,500 feet, setting the stage for a summer of massive forest fires. Already low after the previous year’s drought, California’s reservoirs began to go dry, idling hydroelectric turbines and forcing farmers to drill more irrigation wells.  But California was not alone. Virtually the entire West suffered as low snowpack reduced the flow of the Colorado, Columbia, and other critical river systems.

National Geographic Magazine Archive

During the winter of 2013-2014, global warming and small amounts of Arctic sea ice produced the identical jet stream pattern.  It caused very cold temperatures in the Eastern US, and warmth , drought and fire to the western US.

U.S. temperature extremes and the polar jet stream | NOAA Climate.gov

Climate science is wonderful, because you never need any evidence or logic to support your theory, and you can talk out of both sides of your mouth.

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3 Responses to Understanding Polar Jet Streams

  1. garyh845 says:

    Great work Tony. I remember that Buffalo blizzard (didn’t live there). Life Mag’s cover had a color photo from a plane flying over the suburbs. Was a crystal clear blue sky day and the homes were buried up to the eves. So deep that there wasn’t even a sign of a car parked in driveways, or on the streets. Been looking for that photo for years.

    PS – what was the jet stream doing back in 1885 and 1891?

  2. Pathway says:

    This year we tied our record of 90 degree days which was set in 1977. Our domestic water supply is better in 2018 due to water companies increasing storage capacity.

  3. Ulric Lyons says:

    It wasn’t exactly the same jet stream pattern as the UK was far milder and stormier Jan-Feb 2014. The common factor was negative Arctic Oscillation conditions, but 1976-1977 winter probably didn’t such a powerful NE Pacific warm blob like winter 2013-2014.
    My solar based forecast for 2013-2014 was a deep cold shot for around 2 months from around Jan 7th 2014:
    https://wattsupwiththat.com/2013/09/13/like-the-pause-in-surface-temperatures-the-slump-in-solar-activity-continues/#comment-1104789

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