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Times of clouds and sun
An afternoon thunderstorm
of sunlight, then sets at
of moolight, then sets at
Yellowstone National Park's Firehole Lake Drive was closed Thursday, July 10, as portions of the roadway's asphalt melted amid the summer's recent heat wave in the Northwest. more >
May 17, 2012; 5:00 AM ET
This product plays a big role as humidity rises.