I would hope "my brother" would be wise enough not to engage in self endangering behavior.
You said -- "I would hope "my brother" would be wise enough not to engage in self endangering behavior."
There are thousands of people in Oregon who do that, plus the ones who come in from out of state. Mt. Hood is a popular place. They've got a group called the Mazamas, to help you out, doing that, too --
http://www.mazamas.org/
People in Oregon wouldn't consider it a foolhardy endeavor. They would simply try to be prepared. But, it is not always possible to be prepared for everything that Oregon can throw at it. It can get pretty fierce at times. And you never know when it's coming...
Regards,
Star Traveler