>> dickerson: a neighborhood in canton, illinois, is recovering from a tremendous gas explosion last night. surveillance cameras captured the moment it happened. a worker repairing a gas leak was killed. about a dozen other people were hurt. windows were shattered blocks away. across the southeast, 50 large wildfires have destroyed about 120,000 acres, from alabama to virginia. arson is suspected in many of them. arrests have been made in tennessee and kentucky. a large fire in georgia was sparked by lightning. in the west, snow is finally falling in colorado, utah, and wyoming. some areas could get eight inches or more tonight. it had been unusually warm in the rockies, 80 degrees yesterday in denver. up next, hooves pounding, hearts racing, it's round-up time.