After coming back from our first backcountry overnighter, I realized I had taken WAY too much stuff. Maybe not.
I always try to take gear if conditions get worse. They rarely do, but when it happens, it can make all the difference. Holli & I did a hike to LeConte last year Boulevard to Alum. Supposedly upper 60's really turned out to be 38 with 20-30 mile an hour winds.
Jay, I doubt you were as close as this guy was, but it always a good lesson in keeping it safe.