High Wind — Los Angeles County San Gabriel Valley, California

2010-12-29 · Los Angeles County San Gabriel Valley, California

Event narrative

Strong northerly winds developed across the San Gabriel Valley. The RAWS sensor at San Rafael Hills reported north winds gusting to 61 MPH.

Wider weather episode

At the end of December, one final winter storm rolled across Central and Southern California. The storm produced between 0.50 and 1.50 inches of rainfall across the area. As the storm moved through the area, snow levels dropped to around 4000 feet. With the lowering snow levels, 4 to 8 inches of new snowfall was reported in the mountains. Along with the precipitation, this storm system produced strong and damaging northerly winds across the area. Wind gusts in excess of 60 MPH were reported both in the mountains and the valley areas of Southern California. With the ground already saturated from previous rainfall, the strong winds toppled many trees, producing scattered power outages and road blockages.

Source: NOAA Storm Events Database, event_id 266941. Narrative written by the NWS forecast office that issued the report.