Natural disasters across the United States

The Red river in Fargo North Dakota - swollen with seasonal snow melt - approaches record levels. Scores of homes in North Dakota's plains were evacuated on Friday Photograph: Ben Garvin/AP

Mount Redoubt bellows steam and ash across the Cook Inlet from Ninilchik, Alaska. The volcano erupted twice on Thursday and Friday after blowing its top six times earlier in the week Photograph: Al Grillo/AP

A buffalo searches for food during a snowstorm in Cheyenne, Wyoming. The state was battered by two storms this week Photograph: Michael Smith/AP

Michael Stensgard uses a boat to return to his home in Fargo, North Dakota. The state is under a major flood warning and officials had to blow up ice jams in order to rescue trapped residents Photograph: Richard Tsong-Taatarii/AP

Snow covers a sandbag dike as the Red river rises in Fargo, North Dakota. The river is expected to crest to a record 41 feet (12 metres) by Saturday Photograph: Carolyn Kaster/AP

Members of the Corinth Baptist church of Magee, Mississippi salvage paintings following a tornado on Thursday. The storm shattered dozens of homes and injured at least 17 people, authorities said Photograph: Rogelio V Solis/AP

Elsie the dog sands on a dike surrounding the home of her owners near the Red river in Fargo, North Dakota. The floods are forecasted to be the state's worst in recorded history Photograph: Carolyn Kaster/AP

Students from Felix A Williams school in Stuart, Florida evacuate onto buses as a massive brush fire threatened the area on Wednesday. The fire took over six hours to contain Photograph: Matthew Ratajczak/AP

A valley is flooded in Kenai, Alaska after Mount Redoubt erupted. The 10,200-foot volcano erupted six times on Sunday and Monday Photograph: AP