A weather pattern change will bring cooler and unsettled weather to the Inland Northwest for the next several days as high pressure aloft is replaced by an area of low pressure. A dry cold front will mark the initial change as it pushes through Central Washington today with gusty breezy winds persisting for much of the day, especially for much of Central Washington coupled with dry humidity’s. The strongest winds will span from the Wenatchee area and Waterville Plateau to the Moses Lake area with wind gusts of 45 mph this afternoon and a Wind Advisory continues for this area until 9:00 this evening. A Red Flag Warning also remains in place for our area until 9:00 p.m. Temperatures today will be noticeably cooler by 5 to 15 degrees, with highs topping out in the mid-60s to mid-70s.
It`s been about 9 days since we have seen below normal temperatures.
A northerly pressure gradient develops overnight into Thursday morning, promoting increased north winds down the Okanogan and Wenatchee Valley’s and into the western Columbia Basin 25-35 mph with gusts as high as 50 mph overnight. For Thursday, expect breezy afternoon winds 15-25 mph, mostly sunny skies and cool temperatures with highs tomorrow in the lower 70’s.
The upper level weather system releases its grip on the region by Friday as high pressure builds in from the west. Friday`s temperatures will see a slight rebound into the upper 70’s while lighter winds are expected.
On Saturday and Sunday, the upper level trough will finally exit to our east bringing mostly sunny skies, light wind with afternoon high temperatures in the lower to mid- 80’s. A zonal weather flow will continue for Sunday while an upper level low originating from the Gulf of Alaska inches down the British Columbia Coast. In terms of weather, Sunday should be similar to Saturday albeit slightly cooler as subtle cold air advection takes over the Wenatchee Valley.
Monday through Wednesday weather models continue to bring this upper level low pressure down the West Coast next week with an increase in clouds, a 20% chance of showers each day with afternoon high temperatures in the upper 70’s to near 80 degrees.