India, May 2 -- Sierra Nevada winter storm warning: A significant late-season winter storm is causing concern across the Western United States, posing the risk of severe conditions in California's Sierra Nevada until Tuesday.

Meteorologists have issued winter storm warnings as a Pacific low-pressure system drives moisture levels to 90% above the norm in the mountainous regions.

The storm is anticipated to deliver as much as 4 feet of snow on the tallest peaks, with wind gusts potentially reaching 70 MPH along the Sierra crest.

Travel conditions are becoming hazardous on major routes such as I-80 over Donner Pass and Highway 50, where snow levels are forecasted to plummet from 7,000 feet to as low as 4,500 feet.

Officials caution that ...