Just for the record... weather to the south is cloudy... but Mt. Baker is currently in full sun.
Forget Heather Lake, I'm heading to Mt. Baker/Heather Meadows. Might stomp up to Panorama Dome and practice some ice axe self-arrest techniques. Probably won't head to Artist Point but might poke around on the Twin Lakes road or White Salmon after visiting Heather Meadows.
Depending on weather and time, may stop by the Stimson Trail near Sudden Valley/Lake Whatcom/Lake Louise just to see what there is to see. Maybe I'll hit Raptor Ridge Thursday afternoon.