Severe Winter Storm Approaches Sierra Nevada: Heavy Snow and High Winds Expected

A significant winter storm is approaching the Sierra Nevada, prompting warnings for heavy snowfall and strong winds. With snow levels expected to drop dramatically, travel conditions may become hazardous, particularly on major routes like I-80 and Highway 50. Drivers are advised to prepare for potential road closures and to carry emergency supplies. This storm also impacts Colorado, where significant snowfall has already been recorded. Stay informed about real-time conditions to ensure safe travel.

By Narendra Chaudhary May 2, 2026, 20:30 IST

Severe Weather Alert for Sierra Nevada

A significant late-season winter storm is set to impact the Sierra Nevada region, prompting Winter Storm Warnings for Donner Pass on I-80 and other key mountain routes. The National Weather Service has issued alerts for heavy snowfall, strong winds, and rapidly decreasing snow levels, which may lead to dangerous conditions even at lower elevations.

Forecast Overview

Snow Accumulation: Anticipated snowfall of 1 to 2 feet above 6,000 feet, with the potential for 3 to 4 feet at the highest elevations.

Wind Speeds: Gusts reaching 50 to 70 mph along the Sierra crest, with localized gusts possibly hitting 80 mph.

Snow Levels: Expected to start around 7,000 feet on Sunday, dropping to as low as 4,500 feet by Tuesday morning.

Routes Most Affected

I-80 over Donner Pass — This area faces the highest risk.

Highway 50 over Echo Summit.

Highway 395 along the Eastern Sierra.

Caltrans anticipates implementing chain controls for most vehicles above 5,000 feet. Full closures of I-80 and Highway 50 are likely, particularly from Sunday night through Tuesday morning. When both passes are closed, there are virtually no alternative routes across the central Sierra.

Peak Risk Period

The most dangerous conditions are expected from Sunday night through Tuesday morning, as falling snow levels and the formation of ice overnight will pose significant risks for drivers.

Impact in Colorado

This storm system has already affected Colorado, where substantial snowfall has been recorded in the mountains. Divide received 12.5 inches, while Blue River and Weston Pass each saw 9.6 inches. More snow is anticipated in these areas.

Travel Recommendations

Ensure chains are installed before attempting to cross mountain passes — even all-wheel-drive and four-wheel-drive vehicles may need them.

Pack emergency supplies, including a blanket, water, food, flashlight, portable charger, and ensure your fuel tank is full.

Check real-time conditions using Caltrans QuickMap prior to departure.

This unusual early May storm serves as a reminder that the mountain passes in the Sierra Nevada can remain hazardous well into the spring season.