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Winter Weather Advisories: Prepare for Up to 10 Inches of Snow

Update Preparing for Adverse Weather: What to Expect The winter weather advisories announced by the National Weather Service (NWS) signal an approaching cold front delivering substantial snowfall across key mountainous regions in California. Starting this afternoon, snow accumulation is expected to alter travel conditions, particularly on bridges, overpasses, and mountain highways. As three vital mountain passes are set to close, local traffic is poised to face significant disturbances through the next few days. Understanding the Advisories and Closures The advisories from both the NWS offices highlight areas above 8,000 feet, indicating the western slope will witness snowfall primarily affecting Yosemite National Park, Kings Canyon, Sequoia National Parks, and the southern Sierra regions. The advisory is in effect from 2 p.m. ET Wednesday until 2 p.m. ET Thursday, forecasting a high likelihood—up to 80%—of at least four inches of snow on Tioga Pass and Highway 120, while a 50% to 60% chance persists in surrounding areas. On the eastern side, the NWS Reno advisory forecasts similar conditions in Mono County, where accumulations of four to eight inches have been predicted, with possible totals reaching ten inches on the highest peaks. The advisory, effective from 2 p.m. ET Wednesday until 8 p.m. ET Thursday, aims to prepare travelers for hazardous conditions that may affect Wednesday evening and Thursday morning commutes. Impact on Travel: Pass and Road Closures Caltrans has initiated proactive measures, closing Highway 108 over Sonora Pass and Highway 4 over Ebbetts Pass in advance of the snowfall, specifically locking them down by 11 a.m. ET Wednesday, three hours preceding the predicted snowfall. With closures in place, maintenance crews will reassess conditions intermittently to evaluate when these passes may safely reopen. Further complicating travel plans, Tioga Road—which comprises Highway 120 through Yosemite—will close at 8 p.m. ET Wednesday. The park has already restricted overnight parking on Tioga Road, emphasizing safety during expected weather developments. Winter Driving Preparedness: Essential Tips For those venturing out during these snowy conditions, understanding chain control requirements is crucial. During snow accumulation, Caltrans implements three levels of restrictions. The R2 level demands that four-wheel and all-wheel-drive vehicles need snow-tread tires across all four wheels and must carry traction devices. The R3 level stipulates chains or traction devices on every vehicle, emphasizing how essential it is to know whether your car is rear or front-wheel drive before hitting the road. Caltrans also advises that travelers regularly check their chain size to ensure a proper fit before departure. Equipped with essentials like a flashlight, spare repair links, and possibly checking the weather forecast before any drive into the mountains can pave the pathway toward safer travel during inclement weather. Conclusion: Be Ready, Stay Informed As California prepares for what could be a wintry few days ahead, remaining informed about weather advisories and road conditions will significantly enhance safety measures for all travelers. Whether planning winter excursions or essential trips, keeping informed and prepared can protect you from potential hazards. Remember, safety should always be your priority—even more so in adverse weather conditions.