I saw things I've never seen this time of year on the weather maps yesterday - tornado watches/warnings in Utah and Arizona.
As well as severe thunderstorm watches/warnings in those states and Colorado too.
The storms actually left behind several severe weather reports, mostly in Arizona and Utah, including a few tornadoes.
Some of those storms even held together and rolled from the foothills into the Denver metro area around midnight.
Extremely rare for October.
When people talk about global warming, the put so much focus on the temperature. I actually don't associate global warming with temperatures as much as I do with stuff like this - extreme and unusual weather patterns.