Warm storms at high altitude are washing away snow in the Sierras and the runoff is filling up reservoirs throughout the northern part of California. The heavy rains are also impacting the slopes. “It’s slippery and hard to stop,” said one snowboarder at Boreal Mountain.

State workers at the Department of Water Resources are also taking notice.

“So you’re getting rains in areas that you should be getting snow,” said David Rizzardo, the Snow Survey Chief with the Department of Water Resources.