Also Saturday, San Francisco residents awoke to a tornado warning, but no tornado touched down there. It was the first such warning for the city since at least 1950.
A “particularly dangerous situation” red flag warning is also in place in some mountainous areas due to winds, low humidity, extremely dry vegetation, and high fire risk.
Global temperatures in the last two years have been higher than scientists anticipated. That may be because cloud cover has decreased, a study suggests.