In this file photo, Frank Gehrke, chief of snow surveys at the California Department of Water Resources, conducts a snow survey at Phillips Station in California on January 29, 2015.

(AP) – Back-to-back California storms blanket the Sierra Nevada in snow, more than twice the snowpack level compared to this time last year, with winter still nearly two weeks away.

At the same time last year, the Sierra snowpack was 47 percent of average, the San Francisco Chronicle reported Friday.

A series of systems starting around Thanksgiving dropped several feet (meters) of fresh powder in some mountain areas.

In the southern Sierra, Mammoth Mountain has recorded nearly 6 feet (1.8 meters) since Oct. 1. The ski resort claims to have the deepest snowpack in the country right now.

The newspaper says mountain snowpack provides about 30 percent of the yearly fresh water supply for California, which has struggled with drought in recent years.