California hit by first tropical storm in 84 years
Tropical Storm Hilary landed in Southern California on Sunday, the first tropical storm in the region in 84 years.
The last time a tropical storm made landfall in the area was in 1939, according to the National Weather Service.
The National Hurricane Center warned on Monday that the storm could cause "life-threatening" flooding in the southwestern US, as well as record-breaking rainfall, with flooding possible as far north as Oregon and Idaho.
Hilary has dumped more than half the average annual rainfall in some areas. Hundreds of flights were canceled in San Diego, Los Angeles and other cities, and classes were canceled in California's two largest school districts, Los Angeles and San Diego.
The storm dumped 8.7 inches of rain on parts of Nevada by Monday, breaking the state's heaviest rainfall record in 116 years. Hilary was also the first tropical storm ever to enter Nevada.
At present, the storm did not cause major causalities or damage, but risks remain, especially in mountainous areas where rising water and wet hillsides could trigger mudslides.