Mammoth Lakes, CA – Power outages and hazardous travel could sweep across California’s Eastern Sierra starting Wednesday afternoon as a powerful wind event targets Mono County with damaging gusts capable of downing trees and power lines.
According to the National Weather Service in Reno, a High Wind Warning remains in effect from 2 p.m. Wednesday through 11 a.m. Thursday for Mono County, including Mammoth Lakes, Lee Vining, Bridgeport, and Coleville. Southwest winds will increase to 35 to 45 mph, while gusts may reach 60 mph in many communities.
The most dangerous conditions are expected along exposed stretches of U.S. Highway 395, particularly through narrow canyon corridors where gusts could surge to 80 mph. Forecasters also warn that ridgetops across the Sierra may see wind speeds exceeding 100 mph, creating extreme conditions for backcountry areas and mountain passes.
Travel will likely become difficult Wednesday evening and overnight. Large trucks, campers, and other high-profile vehicles may struggle with powerful crosswinds, especially between Lee Vining, Bridgeport, and the Nevada state line.
Emergency officials say the strongest gusts could knock down trees and power lines, raising the risk for widespread outages across Mono County communities.
Residents are urged to secure outdoor furniture, trash bins, and loose items before winds increase Wednesday afternoon. Authorities also recommend keeping flashlights, batteries, food, and water ready in case outages occur during the overnight hours.
Winds are expected to gradually weaken late Thursday morning, though additional advisories could follow if hazardous conditions persist.
