Parts of California saw extreme rainfall for August as "insane" monsoonal moisture flooded the state over the weekend.

Why It Matters

On Monday, the National Weather Service (NWS) warned that monsoonal moisture would continue producing showers and thunderstorms over parts of the U.S. West. Monsoon season runs through much of the summer across the U.S. Southwest, and although many times it hits deserts in Arizona, New Mexico, and Southern California, it is not unusual for the monsoon to funnel moisture into Central and Northern California, NWS Weather Prediction Center senior meteorologist Brian Hurley told Newsweek .

What to Know

On Sunday, extreme weather chaser Colin McCarthy posted the rainfall totals on X, formerly Twitter .

"This is insane," McCarthy wrote in the post. "

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