Nine are dead and more than 20 injured after a charter tour bus drove through a guardrail and off Interstate 84 in rural Oregon Sunday morning.
The bus rolled more than 100 feet down a snowy embankment before coming to a stop and landing upright.
The bus was carrying more than 40 people en route from Las Vegas to Vancouver on icy roads along the west end of the Blue Mountains and west of an area notoriously known as Deadman Pass.
"There was some very light snow in the area, but also some fog, so that could have caused ice to form on the road," AccuWeather.com Senior Meteorologist Dave Samuhel said.
The temperature was around 25 degrees F Sunday morning.
"It is a typically snowy area," Samuhel said.
Though there had not been a big storm for a few days prior to the crash, on average, Meacham, Ore., an area nearby, gets 147 inches of snow per year.
The Oregon Department of Transportation has posted warnings for truck drivers which pass through the area, stating that the pass sees "some of the most changeable and severe weather conditions in the Northwest."
The driver suffered serious injuries and has not yet been able to provide information to investigators.
Tropical Depression 8 has formed east of the Carolinas and should strengthen into a tropical storm before impacting the coastal Carolinas early this week.
Despite struggling to do so last week, a tropical depression has developed just south of Florida and will turn toward the northeastern Gulf Coast of the United States this week.
Brief relief from heat and humidity will arrive in the northeastern United States at the start of September.
Typhoon Lionrock is poised to make landfall in Japan near Sendai early in the new week with heavy rainfall, damaging winds and an inundating storm surge.
Hawaii is facing two tropical threats this week as Madeline and Lester churn westward.
Slow-moving and repetitive downpours will raise the risk for flash flooding along the western Gulf Coast into early week.
Colorado Springs, CO (1978)
Hail 6 inches deep.
Rochester, MN (1979)
2.73 inches of rain fell in 50 minutes making this the wettest August on record. (9.52 inches of rain so far this month). The heavy downpour flooded the streets of Rochester, stranding about 1,500 cars.
A five-state tornado outbreak in Nebraska, Kansas, Wyoming, Iowa and Missouri occurred on this date. In all, 20 tornadoes were reported. Nine were in Iowa. One near Farragut, IA, in the extreme SW corner of the state, caused several fatalities and numerous injuries.