Do you need weather-related school, road, bridge closings? Here is one I have found fairly useful, though there are others no doubt. Portland Emergency Info (PDXInfo dot net) is back in action after a long lull. Welcome to Winter in the Northwest.
But don’t look for Trimet announcements at PDXInfo; they didn’t participate last year and we aren’t holding our breath this year. You will need to go here to find out if your bus or train has broken down, though you may know it before they do.