SANTA ROSA, Calif. (KRON) – The latest storm has brought hail to parts of the North Bay and snow to the Bay Areas mountain peaks.

The Pacific storm is bringing much-needed rain and snow to California at the tail-end of a largely dry winter.

Winter storm warnings are in effect Wednesday in the southern Cascades, down the length of the Sierra Nevada and in the mountains of Southern California.

Caltrans is urging drivers to check for chain controls before heading through mountains.

The weather service says storm conditions have included showers, downpours, thunderstorms, hail and low-elevation snow.

The Sierra snowpack is an important contributor to California‘s water supply, but at the start of March its water content was about half the average normally recorded on April 1, when it is typically at its most robust.

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The Associated Press contributed to this report.