Yes, Irene was bad, 2006. Lots of houses got smashed, mine included. $76K and a year to totally repair. Some were way less lucky, especially in Calvert. One house very near me was condemned.
I don't live in Portland. Close enough for me though. Seems a pretty cool city from what I've seen of it. Been to a few events and they were ok, saw a bagpipe playing guy dressed as Darth Vader riding a unicycle riding around during the food beer one. Bicycles and hiking/ running are very big...
Not really, just keep a low profile and use an obscure trail. lol. We camped overnight near Yuma point after finding out on the trail there were a bunch of rangers where we had planned on going. The trail was a bit hard to find in some areas having been wiped out by rockslides.
Driving from Phoenix is a much prettier trip, especially if you take the route through Sedona. From Vegas you get to see Hoover Dam though and that is very cool. Either way get away from the main overlooks and take a short hike to a spot along the rim. Worth it.