Associated with this system is the advection of some very cold air (for this time of year) out of the Gulf of Alaska ... 850mb temps in the -6 to -8 deg C range (see below). This should drop the freezing level down to 1500 - 2000ft and given the spring insolation (amount of energy/heating from the sun), result in unstable conditions. With 50+ knot winds at 700mb, the instability could result in some strong winds mixing down to the surface. Plus, these are prime conditions for hail, t-storms, and possibly a funnel cloud or two.... especially in the Puget Sound convergence zone, given the constant west-northwesterly wind through Sunday after the cold front passes tonight.
