Hanford, California – Travel across California’s central Sierra Nevada could grind to a halt within hours as heavy snow and powerful winds intensify across high-elevation corridors, creating near-impossible driving conditions Tuesday night into Wednesday morning.
According to the National Weather Service in Hanford, a Winter Storm Warning remains in effect until 4 p.m. Wednesday for Yosemite National Park outside the valley, the Upper San Joaquin River region, and the Kaiser to Rodgers Ridge area. Snow totals are expected to reach 12 to 18 inches above 7,000 feet, with up to 24 inches at the highest elevations. Wind gusts between 40 and 50 mph are expected to produce blowing snow and sudden whiteout conditions.
Impacts will be widespread across mountain communities including Shaver Lake, Huntington Lake, Wawona, Tuolumne Meadows, Florence Lake, Lake Thomas Edison, and Devils Postpile. High mountain roads, including routes connecting to Yosemite and backcountry recreation areas, may become impassable. Tuesday evening travel and the Wednesday morning commute are expected to be the most hazardous as snowfall rates peak.
Caltrans warns drivers to avoid non-essential travel in the warned areas. Those who must be on the road should carry emergency supplies, including food, water, and a flashlight, and be prepared for extended delays or road closures. Road conditions can change rapidly and should be checked through Caltrans by calling 511.
The heaviest snow tapers Wednesday afternoon, but additional advisories may follow as lingering snow and gusty winds continue to affect high elevations.
