The NWS said, If outdoors, consider seeking shelter inside a building. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service.
The National Weather Service issued a weather alert at 6:57 p.m. on Sunday for strong thunderstorms in effect until 7:30 p.m. for the Greater Lake Tahoe Area. Wind gusts of up to 40 mph and pea-sized hail (0.25 inches) are expected. At 6:56 p.m., Doppler radar tracked a strong thunderstorm over Emerald Bay, or near South Lake Tahoe, moving east at 20 mph, the NWS Reno NV said.
The National Weather Service issued an updated report at 1:57 p.m. on Saturday for strong thunderstorms in effect until 2:30 p.m. for Yosemite. Prepare for pea-sized hail (0.25 inches) and wind gusts of up to 40 mph. At 1:57 p.m., Doppler radar tracked a strong thunderstorm 13 miles southwest of Twin Lakes, moving north at 20 mph, states the NWS Hanford CA.