A storm system which brought damaging winds to California over the weekend is now moving quickly eastwards across the USA, bringing blizzards to the Rockies and Mid-West, and the threat of severe thunderstorms for southern states.

At least one person was killed over the weekend in California, where winds gusted 50mph in San Diego, and 65mph in Malibu. The winds brought down trees and cut power for a time. An inch of rain fell in some areas, and significant snow affected the mountains.

As the system moved east, it developed into a large area of low pressure, producing significant snowfalls and strong winds. Blizzard conditions are extending to the Mid-West through Tuesday.

Tornadoes are likely across the Mississippi valley during Tuesday afternoon and night. The risk of severe weather advances eastwards into Wednesday as a cold front moves east, engaging with tropical moisture from the Gulf of Mexico.