(CNN) California is on track to get more rain in a week than it sees in two months, all from unseasonal storm systems rolling through.

The National Weather Service's San Francisco office said that through May 22 the state is expected to get 150-200% of its normal monthly rainfall.

It's all thanks to a series of "atmospheric rivers" that will set up over the Pacific Ocean, moving into California.

Atmospheric rivers suck up water vapor from the ocean, transport it along narrow regions in the atmosphere and then dump precipitation in massive amounts on land, supercharging storm systems.

Water vapor satellite imagery shows the atmospheric river flowing across the Pacific into California early Thursday morning.

The second of three "rivers" is setting up still offshore, but it'll start bringing rain and snow to California on Friday through Saturday. Then a third system, albeit weaker, will move through the state next Wednesday to help push precipitation totals over record amounts.

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