UPDATE: Tornado Warning Expires; No Damage Reported

Bay City News—The tornado warning for San Mateo County issued today by the National Weather Service expired at 11:30am with no report of damage, a
meteorologist with the weather service said.

The warning was issued at about 11am for most of the county, but not in San Bruno, as the weather service's radar system picked up signs of a severe thunderstorm and possible tornado approaching the coast, meteorologist Steve Anderson said.

Winds of 30 to 40 mph, a downpour of rain and pea-sized hail were reported, but not a tornado, Anderson said.

The heavy part of the storm has passed through the Peninsula, and "once it got over the Bay, it decreased in intensity rapidly," he said.

The storm was moving through Alameda and Contra Costa counties as of 11:40am, he said.

Throughout the rest of the day, showers are expected to continue in San Bruno through the evening with a possibility of a thunderstorm and small hail. It is expected to continue to be breezy with gusts as high as 32 mph.