As heat wave holds in NorCal, thunderstorms roll over Nevada

A timelapse video by the University of Nevada Seismology Lab shows the dramatic progress of a thunderstorm moving over the mountains near east of the Sierra Nevada and west of Hawthorne, Nev., on Monday, June 19, 2017, the same day that temperatures and dry conditions will continue to bake the Sacramento region.
University of Nevada Seismology Lab