A trough of low pressure will slowly drift across California through Monday.
It will bring cooler weather, higher humidity, and a return of some night and morning marine clouds along the Coast.
An isolated shower or thunderstorm is not out of the question either over the mountains and deserts of San Bernardino County, but most areas will stay dry. High pressure rebuilds off the eastern Pacific later in the week for a return of very warm days and continued dry weather.
United States Overview:
Heavy rainfall threat continues for South Texas.
Below normal temperatures for the western U.S. as most of the eastern U.S. stays warm and dry.
Very strong Santa Ana winds developed on this day and continued through 10/23. A gust of 85 mph was recorded at Fremont Canyon, 79 mph at San Bernardino, 75 mph at Descanso and Mira Loma, and 74 mph at Fallbrook and Rancho Cucamonga. Some locations experienced winds at least 45 mph for more than 36 consecutive hours. Winds caused at least $60 million in damage and destruction to buildings, fences, vehicles, etc. The devastating wildfires of 2007 were fanned by these winds. These fires caused one million Californians to evacuate, the largest mass evacuation in California history. Several notable fires that started on this day include the Witch Creek, Harris, and Santiago Fires. The Witch Creek fire eventually grew into the sixth largest wildfire in California since 1932, consuming 197,990 acres, 1,650 structures, injuring 40, and causing two fatalities. The combined cost of damages and fighting the fire was estimated at more than $1 billion. The Harris and Santiago Fires would scorch 90,440 and 28,445 acres respectively and cost a combined $43 million to fight.