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The 2011 Southwest blackout, also known as the Great Blackout of 2011, [1] [2] was a widespread power outage that affected the San Diego–Tijuana area, southern Orange County, Imperial Valley, Mexicali Valley, Coachella Valley, and parts of Arizona. [3]
Forecasters say Southern California this week could see the worst winds since 2011, when a massive storm cut a path of destruction through Pasadena and other parts of the San Gabriel Valley.
This could be the strongest such wind event since the 2011 storm that caused serious damage in Pasadena, Altadena and other San Gabriel Valley neighborhoods, including knocking out power for days ...
Hurricanes that affect California are mainly the remnants of hurricanes or tropical storms. In the twentieth century, only four eastern Pacific tropical cyclones have brought tropical storm-force winds to the Continental United States: the 1939 Long Beach Tropical Storm, Tropical Storm Joanne in 1972, Tropical Storm Kathleen in 1976, and Tropical Storm Nora in 1997.
The storm had undergone Explosive cyclogenesis on December 19, which caused flooding and mudslides in California. [7] It would start to weaken as it move towards the Gulf of Mexico. It would dump snow on the mountains of Southern California and the 4 Corners region of the Country.
State officials have confirmed 9 people died in the storm, including four hit by trees in Northern California and at least two in car wrecks in Southern California.
The Santa Anas are katabatic winds (Greek for "flowing downhill") arising in higher altitudes and blowing down towards sea level. [7] The National Weather Service defines Santa Ana winds as "a weather condition [in southern California] in which strong, hot, dust-bearing winds descend to the Pacific Coast around Los Angeles from inland desert regions".
Southern California Edison reported about 8,000 customers without power as of Monday at 12:30 a.m., and Pacific Gas & Electric reported more than 650,000 customers without power as of 7 p.m. Sunday.