A mudslide triggered by thunderstorm activity has disrupted traffic along Interstate 80 in the Sierra Nevada, just west of the California-Nevada state line.

The mudslide occurred near the Floriston area of eastern Nevada County around 2:45 p.m., blocking one of the westbound lanes, according to Caltrans.

Caltrans said crews were quickly dispatched to the scene with heavy equipment to begin clearing the debris.

Caltrans

As of 3:05 p.m., only one westbound lane was open, with cleanup ongoing and no estimated time of reopening for the remaining lane, officials said.

A flash flood warning issued by the National Weather Service was in effect at the time of the mudslide and is expected to last until around 4:30 p.m.

Eastbound traffic is also seeing delays as the storm system continues to a

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