The US state of California is bracing itself for flooding after ex-hurricane Hilary made landfall in Mexico.

It is expected to be the first tropical storm to hit the state in more than 80 years.

Hilary, which was downgraded from a category 4 hurricane before it made landfall in Mexico, has been moving north after it hit the Baha coast.

Meteorologist at the national weather service in Los Angeles, David Sweet told the ABC California isn’t equipped to deal with heavy rain.

(IMAGE: National Hurricane Centre)