People are quick! I just found this under Mount Hood, Climbing Accidents on Wiki
The attraction of Oregon's highest point, easy access and lack of technical climbing challenges lures many to climb Mount Hood. However, the Cascade Range weather patterns are unfamiliar to many, even local residents. Many are seduced by gentle wind and warm air at access points, only to encounter 60 F temperature drop in less than an hour, with suddenly increased sustained winds of 60 mph and more, with visibility going from hundreds of miles to arm's length in the same span of time. That pattern fairly well describes what happened in the December, 2006, story.
http://en.wikipedia.org/wiki/Mount_Hood#Climbing_accidents
The attraction of Oregon's highest point, easy access and lack of technical climbing challenges lures many to climb Mount Hood. However, the Cascade Range weather patterns are unfamiliar to many, even local residents. Many are seduced by gentle wind and warm air at access points, only to encounter 60 F temperature drop in less than an hour, with suddenly increased sustained winds of 60 mph and more, with visibility going from hundreds of miles to arm's length in the same span of time. That pattern fairly well describes what happened in the December, 2006, story.
http://en.wikipedia.org/wiki/Mount_Hood#Climbing_accidents