Deadly weather: 6 killed in Montana dust storm

A dust storm on Interstate 90 in Montana caused a traffic jam of 21 vehicles Friday night, Montana Highway Patrol Sgt

Six people, including two minors, died in the crash and eight others were hospitalized for their injuries

Severe flooding Friday night in Buckthorn Canyon in northern Colorado swept away a house, killing a woman and child inside, authorities said

Meanwhile, the National Weather Service also issued a flood warning for Yavapai, Arizona on Friday

This is because monsoon rains occur in this area

 Water washes mud into people's homes in Flagstaff, Coconino County

In addition, the courtyards and streets were flooded

The storm is expected to move toward parts of the northern plains on Saturday before moving south and east on Saturday evening