High Wind — San Bernardino and Riverside County Valleys - the Inland Empire, California

2023-11-20 to 2023-11-21 · San Bernardino and Riverside County Valleys - the Inland Empire, California

Event narrative

High winds occurred across portions of the Inland Empire starting on the evening of November 20th and lasting through the morning and early afternoon hours on the 21st. The Highland Springs mesonet site recorded a peak wind gust of 65 mph, while the Devil Canyon SoCal-Edison site recorded a peak wind gust of 64 mph. Other high peak wind gusts include 63 mph at the Devore SoCal-Edison site, 62 mph at Rialto, and 60 mph at Rancho Cucamonga.

Wider weather episode

Strong high pressure centered over the Great Basin brought a strong round of Santa Ana winds to Southern California on November 20-21. Numerous damage reports were observed on the morning of November 20th, with very strong peak winds observed starting late in the evening on the 20th and running through the morning of the 21st.

Source: NOAA Storm Events Database, event_id 1147006. Narrative written by the NWS forecast office that issued the report.