Excessive heat warnings will continue for much of the Desert Southwest through Monday. Here, Maria Wieser of Italy drinks water while sightseeing in Death Valley National Park on Friday.
This ominous-looking wall of clouds formed near Purcell, Okla., on Thursday. There were more tornadoes in Oklahoma and Arkansas as severe weather continued to pummel those states.
That's the coast of the U.S. on the left, the tip of Greenland at the top center and the coast of Europe on the top right. Meanwhile, the storm's tail extends down into the Caribbean.
NOAA Satellite and Information Service