FILE - Passing storm clouds move over Castaic Lake in Castaic, Calif. on Nov. 9. California remains in the grip of a yearslong drought but the U.S. Drought Monitor’s weekly report shows that recent storms have led to some improvement. The latest map issued Thursday, Dec. 15, shows some contraction in all categories of drought, including “exceptional” and “extreme,” compared to a week earlier. (AP Photo/Richard Vogel, File)