High Wind in Northern San Joaquin Valley, California

Southerly gusts of 40 to 70 mph were observed from December 24th through 25th. Stockton Metropolitan Airport measured a gust to 55 mph. Modesto Airport measured a gust to 45 mph. There were several reports of downed trees and powerlines from California Highway Patrol.

A prolonged period of wet weather brought heavy snowfall and strong winds to the Sierra Nevada. Heaviest snowfall was observed from 12/24-12/26 when snow levels came down below the mountain passes. Snowfall measurements over the 12/24-12/26 timeframe were around 2-5 ft per Caltrans, Ski resorts, and UC Berkeley Central Sierra Snow Lab. Southerly wind gusts of 50-80 mph were observed as well across the Valley, foothills and mountains that resulted in numerous downed trees and thousands of power outages. There were also numerous reports of flooding in the lower elevations from heavy rain, including two fatalities and 3 injuries from vehicles that hydroplaned and crashed.