We may be looking at some convection tomorrow afternoon into tomorrow night. First in the evening with scattered pop ups, then another surge overnight as a shortwave moves through from the SSW. Chances for lightning look typically better to the south and east.
A concerning situation looks to develop into the early week as the shallow cutoff responsible for our convective threat first grazes by our region to our SW, then swerves eastward into NorCal. That eastward push is going to instigate strong easterly flow throughout the PNW. Surface winds on the westside will still be muddled especially south of Seattle, but any fire starts east of the Cascades caused by the lightning we do see will pour smoke into the higher atmosphere over western WA and OR, then mix downward to the surface amidst descending midlevel easterlies and strong ridging aloft with excellent clearing+mixing.