Thanks for the update Rose. RIP
I'd say it's odd that his airplane hasn't been found, but the terrain here is as rugged and remote as it gets in the lower 48. Direct path is over North Cascades NP.
FWIW NTSB found no record of him checking weather. Given distance, it was a requirement (over 50 NM is considered a "cross country" as opposed to a local, flight)-most pilots either check with a flight briefer over phone or use a free service (ie DUATs) which provides a record of having met the requirement.
He held certified flight instructor and Instrument flight ratings, had 1200 total hours, and 40in past 6 months prior to presumed fatal accident.
link to NTSB investigation-
https://app.ntsb.gov/pdfgenerator/R...=20120806X11036&AKey=1&RType=Final&IType=FAMS