Tuesday, December 20, 2016

Weather Washington Cascades- Extended Outlook

Issued 12-20-2016

The 10 to 15 day forecast models continue the pattern of above normal precipitation and below normal temperatures. Thus, we should continue to add to our snowpack in the Cascades. Most places already have above normal snowpack and that pattern will continue through at least early January. The map below continues the pattern of troughs of low pressure that drop down from the Gulf of Alaska.

500 mb (18,000') for 12-27 shows trough in Gulf of Alaska

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