High pressure will strengthen over the Pacific Northwest over the next few days promoting stable weather and unseasonably warm temperatures. Under sunny skies, afternoon highs for the next few days will be warming into the lower 70’s today, mid 70’s on Thursday and possibly upper 70’s on Friday. Our normal high temperature for this time of year is 60 degrees. Winds will be light with speeds of 10 mph or less throughout the weather period.
On Saturday, a vigorous shortwave trof of low pressure will drop down out of British Columbia on the front side of an amplified ridge of high pressure in the Gulf of Alaska. This pattern is very favorable for strong winds down the Okanogan Valley and spreading out across the western basin. There will be a drastic air mass weather change as well with strong cold air advection accompanying the front. What will be left in the wake of the frontal passage on Saturday afternoon will be a strong pressure gradient as low pressure rapidly spins up over eastern Wyoming and Colorado in the lee of the Rockies. Much of the west will likely see breezy to windy weather conditions. The Okanogan Valley is traditionally susceptible to strong winds though as the cold air funnels down between the higher terrain. Wind gusts of between 50-60 mph will be possible and solidly within advisory criteria. Impacts will include the potential for tree damage and power outages. Drought conditions across portions of central Washington, including the Okanogan Valley and Waterville Plateau will mean that blowing dust will also be a potential concern.
Mostly sunny skies for our weather forecast Saturday with highs much cooler down into the lower 60’s.
On Easter Sunday, a strong ridge of high pressure in the eastern Pacific will keep Northcentral Washington under a northerly flow and cool, under sunny skies on Sunday, high temperatures will top out near 60 degrees.
Mostly sunny skies on tap for both Monday and Tuesday with warmer temperatures as well with afternoon highs on Monday in the mid 60’s while Tuesday’s temperatures will reach the upper 60’s.