A tornado touched down just outside of Mariposa on Saturday afternoon, the National Weather Service said.
Officials from the NWS surveyed the area where a video was taken of a funnel cloud on Ben Hur Road near Beach Road, according to Meteorologist Jim Bagnall.
Surveyors found branches ripped from trees and grass swirls that indicated a tornado had touched down.
Bagnall said that the tornado touched down briefly just eight miles south of Mariposa and reached winds speeds 65 to 85 miles per hour.
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He also said the tornado was the weakest of tornado categories.