NWS Forecast Office Pendleton, OR

Mountain snow will develop tonight and prevail through tomorrow night. Snow levels will drop to pass levels overnight-early Wednesday promoting difficult driving conditions in the WA/OR Cascades and the Northern Blue Mountains. Meanwhile, persistent breezy to windy conditions are expected. Breezy winds will ramp-up tomorrow as a cold front drops south with the strongest peak gusts around 35-45 mph Wednesday and Thursday afternoons. The cold front will usher in a colder air mass with below average lows forecast Thursday Morning and Friday morning. Late-season freezing temperatures threaten Kittitas and Yakima Valleys, as well as climatologically prone areas in the foothills of the Northern Blues (50-70%). The coldest conditions are most likely Thursday. However, there is quite a spread with a lower overall likelihood (30-50%) for freezing conditions across the Lower Columbia Basin and nearby vicinity. Those with sensitive vegetation, plants, and crop interest should be aware and stay tuned to the forecast!