Atmospheric conditions are lining up just right to set off quite a show for much of the PNW between tonight and Friday afternoon. While every location has the risk, areas north of Albany into SW WA have a high probability for heavy rainfall (localized street flooding), thunder, lightning and potential for hail & gusty winds. The most severe storms are likely to form east of the Cascades, so patrons there should heed Nat'l Wx Service announcements (flash flooding/damaging winds). As the slow moving low spins northward, things will settle down from the south first.
From Chicago, -Rufus