I found a place to ski nearer to home, in Spain, which looks very promising.
Contrary to Portugal’s only offering (Serra da Estrela) which has several drawbacks –most importantly the miniscule nature of the trails– this one appears to have decent skiable slopes and is only about 5 hours or so from Lisbon.
I’m trying to set up a weekend trip there to test it out. It seems I may stop being constrained to one week a year of snow fun. Yay!