I had my clock radio set to MPR as well and woke up to them talking about the first plane. Usually the news every morning didn’t register but that day it did.
I turned on the TV to see what was going on, which I usually don’t do. After a couple minutes of “oh my that’s a tragic accident” the second plane hit an I immediately knew it was no accident.
I worked downtown Mpls at the time and no way I was going to work that day. Thankfully my boss told everyone to stay home.
Seeing all of it live is a memory burned into my brain the same as watching the Challenger blow up live in middle school.