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After further investigation, the National Weather Service revised its first assessment of one Glenn County tornado Wednesday evening to three separates EF1 tornadoes, with winds speeds of up to 100 miles per hour.

Between 5:30 p.m. and 6 p.m., one twister touched down north of County Road 39 between roads R and TT and another one hit south of 36 between R and TT, according NWS. Outbuildings, a barn and pheasant pen as was a grove of trees, NWS found.

The third tornado was at 5:43 p.m,. a witness told NWS. The event was west of the other two tornadoes and it crossed Bayliss Blue Gum Road. The NWS survey found more than 100 almond and decidious trees uprooted, broken windows and damaged fencing.

NWS uses the EF, or Enhanced Fujita scale to give a tornado a 'rating' based on estimated wind speeds and related damage. NWS says when tornado-related damage is surveyed, it is compared to a list of damage indicators and degrees of damage which help estimate the range of wind speeds of the tornado. Based on that information, a rating from EF0 to EF5 is assigned.

Another tornado, rated as EF0 with winds from 65 to 85 mph, struck two miles west of Roseville Wednesday evening, causing damage to some homes and fences.

STORY: 2 tornadoes reported, multiple funnel clouds spotted in N. Calif.

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