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Southern California is a geographic and cultural region that generally comprises the southern portion of the U.S. state of California. It includes the Los Angeles metropolitan area and also the Inland Empire. The region generally contains ten of California's 58 counties: Imperial, Kern, Los Angeles, Orange, Riverside, San Bernardino, San Diego, Santa Barbara, San Luis Obispo and Ventura counties.
Greater Los Angeles is the second-largest metropolitan area in the United States, with a population of 18.5 million in 2021, encompassing five counties in Southern California extending from Ventura County in the west to San Bernardino County and Riverside County in the east, with Los Angeles County in the center and Orange County to the southeast. According to the U.S. Census Bureau, the Los Angeles–Anaheim–Riverside combined statistical area covers 33,954 square miles (87,940 km2), making it the largest metropolitan region in the United States by land area. Of this, the contiguous urban area is 2,281 square miles (5,910 km2), the remainder mostly consisting of mountain and desert areas. In addition to being the nexus of the global entertainment industry, Greater Los Angeles is also an important center of international trade, education, media, business, tourism, technology, and sports. It is the 3rd largest metropolitan area by nominal GDP in the world with an economy exceeding $1 trillion in output.
Needles is a city in San Bernardino County, California, in the Mojave Desert region of Southern California. Situated on the western banks of the Colorado River, Needles is located near the California border with Arizona and Nevada. The city is accessible via Interstate 40 and U.S. Route 95. The population was 4,959 at the 2020 census, up from 4,844 at the 2010 census.
The Santa Clara River is an 83 mi (134 km) long river in Ventura and Los Angeles counties in Southern California. It drains parts of four ranges in the Transverse Ranges System north and northwest of Los Angeles, then flows west onto the Oxnard Plain and into the Santa Barbara Channel of the Pacific Ocean.
Pineapple Express is a non-technical term for a meteorological phenomenon, a specific recurring atmospheric river characterized by a strong and persistent large-scale flow of warm moist air, and the associated heavy precipitation both in the waters immediately northeast of the Hawaiian Islands and extending northeast to any location along the Pacific coast of North America. A Pineapple Express is an example of an atmospheric river, which is a more general term for such relatively narrow corridors of enhanced water vapor transport at mid-latitudes around the world.
Seven Oaks Dam is a 550-foot (170 m) high earth and rock fill embankment dam across the Santa Ana River in the San Bernardino Mountains, about 4 miles (6.4 km) northeast of Redlands in San Bernardino County, southern California. It impounds Seven Oaks Reservoir in the San Bernardino National Forest.
The 1939 California tropical storm, also known as the 1939 Long Beach tropical storm, and El Cordonazo, was a tropical cyclone that affected Southern California in September 1939. Formerly a hurricane, it was the only tropical storm to make landfall in California in the twentieth century. Fisherman in the villages along the Mexican coast have named these storms, the Lash of St. Francis. The only other known tropical cyclone to directly affect California at tropical storm intensity or higher is the 1858 San Diego hurricane, and only three other eastern Pacific tropical cyclones have produced gale-force winds in the continental United States. The tropical storm caused heavy flooding, leaving many dead, mostly at sea.
All types of floods can occur in California, though 90 percent of them are caused by river flooding in lowland areas. Such flooding generally occurs as a result of excessive rainfall, excessive snowmelt, excessive runoff, levee failure, poor planning or built infrastructure, or a combination of these factors. Below is a list of flood events that were of significant impact to California.
The climate of Los Angeles is mild to hot year-round, and mostly dry. It is classified as a Mediterranean climate, which is a type of dry subtropical climate. It is characterized by seasonal changes in rainfall—with a dry summer and a winter rainy season. Under the modified Köppen climate classification, the coastal areas are classified as Csb, and the inland areas as Csa.
Citrus Plaza, is a shopping center located in Redlands, California, United States, owned by Majestic Realty Co. It consists of 520,000 square feet of retail and restaurant space, anchored by Target and Kohl’s, on 53 acres of a 120-acre master planned shopping center. Citrus Plaza opened in 2004-05.
The Great Flood of 1862 was the largest flood in the recorded history of California, Oregon, and Nevada, inundating the western United States and portions of British Columbia and Mexico. It was preceded by weeks of continuous rains and snows that began in Oregon in November 1861 and continued into January 1862. This was followed by a record amount of rain from January 9–12, and contributed to a flood that extended from the Columbia River southward in western Oregon, and through California to San Diego, and extended as far inland as Idaho in the Washington Territory, Nevada and Utah in the Utah Territory, and Arizona in the western New Mexico Territory. The event dumped an equivalent of 10 feet (3.0 m) of water in California, in the form of rain and snow, over a period of 43 days. Immense snowfalls in the mountains of far western North America caused more flooding in Idaho, Arizona, New Mexico, as well as in Baja California and Sonora, Mexico the following spring and summer, as the snow melted.
The geography of southern California refers to the geography of southern California in the United States.
The January 2010 North American winter storms were a group of seven powerful winter storms that affected Canada and the Contiguous United States, particularly California. The storms developed from the combination of a strong El Niño episode, a powerful jet stream, and an atmospheric river that opened from the West Pacific Ocean into the Western Seaboard. The storms shattered multiple records across the Western United States, with the sixth storm breaking records for the lowest recorded air pressure in multiple parts of California, which was also the most powerful winter storm to strike the Southwestern United States in 140 years. The fourth, fifth, and sixth storms spawned several tornadoes across California, with at least 6 tornadoes confirmed in California ; the storms also spawned multiple waterspouts off the coast of California. The storms dumped record amounts of rain and snow in the Western United States, and also brought hurricane-force winds to the U.S. West Coast, causing flooding and wind damage, as well as triggering blackouts across California that cut the power to more than 1.3 million customers. The storms killed at least 10 people, and caused more than $66.879 million in damages.
The Inland Empire (IE) is a metropolitan area or region inland of and adjacent to coastal Southern California, centering around the cities of San Bernardino and Riverside, and bordering Los Angeles County to the west. The bulk of the population is centered in the cities of northwestern Riverside County and southwestern San Bernardino County, and is sometimes considered to include the desert communities of the Coachella and Victor Valleys, respectively on the other sides of the San Gorgonio Pass and San Bernardino Mountains from the Santa Ana River watershed that forms the bulk of the Inland Empire; a much broader definition includes all of Riverside and San Bernardino counties. The combined land area of the counties of the Inland Empire is larger than ten U.S. states—West Virginia, Maryland, Hawaii, Massachusetts, Vermont, New Hampshire, New Jersey, Connecticut, Delaware and Rhode Island.
In terms of property damage, 2017 was the most destructive wildfire season on record in California at the time, surpassed by only the 2018 season and the 2020 season, with a total of 9,560 fires burning 1,548,429 acres (6,266.27 km2) of land, according to the California Department of Forestry and Fire Protection, including five of the 20 most destructive wildland-urban interface fires in the state's history. Throughout 2017, the fires destroyed or damaged more than 10,000 structures in the state, a higher tally than the previous nine years combined. State data showed that the large wildfires killed 47 people – 45 civilians and 2 firefighters – almost higher than the previous 10 years combined. The total property damage and total amount of burned land were both surpassed by the 2018 California wildfires.
A series of 29 wildfires ignited across Southern California in December 2017. Six of the fires became significant wildfires, and led to widespread evacuations and property losses. The wildfires burned over 307,900 acres (1,246 km2), and caused traffic disruptions, school closures, hazardous air conditions, and power outages; over 230,000 people were forced to evacuate. The largest of the wildfires was the Thomas Fire, which grew to 281,893 acres (1,140.78 km2), and became the largest wildfire in modern California history, until it was surpassed by the Ranch Fire in the Mendocino Complex, in the following year.
Hurricane Kay was a Category 2 hurricane that made landfall along the Pacific coast of the Baja California peninsula as a tropical storm. The twelfth named storm and eighth hurricane of the 2022 Pacific hurricane season, Kay originated from an area of disturbed weather that formed south of southern Mexico. Overall, damage from Kay totaled $10.62 million and it was responsible for five fatalities. Rain from the storm proved beneficial for firefighters battling the Fairview Fire in Southern California.
Periods of heavy rainfall caused by multiple atmospheric rivers in California between December 31, 2022 and March 25, 2023 resulted in floods that affected parts of Southern California, the California Central Coast, Northern California and Nevada. The flooding resulted in property damage and at least 22 fatalities. At least 200,000 homes and business lost power during the December-January storms and 6,000 individuals were ordered to evacuate.
References
- ↑ Barber, Megan (2017-01-06). "4 historic California storms that caused serious destruction". Curbed SF. Retrieved 2017-09-01.
- 1 2 Malnic, Eric (2005-06-30). "When It Comes to a Record, L.A. Rain Falls a Drop Short". Los Angeles Times. ISSN 0458-3035 . Retrieved 2017-09-01.
- ↑ "National Weather Service Public Information Statement". National Weather Service via sierraphotography.com. 2005-07-01. Retrieved 2017-09-01.
- ↑ Becerra, Hector (2005-02-14). "Flood Aid Fills Needs -- at a Cost". Los Angeles Times. ISSN 0458-3035 . Retrieved 2017-09-01.
- ↑ "California Flooded River". Full Force Nature. Season 1. Episode 1. January 15, 2006. The Weather Channel . Retrieved October 9, 2021– via YouTube.
- ↑ "Episode 7". World's Most Amazing Videos. Season 3. Episode 7. 2006. Spike TV. Retrieved October 9, 2021– via YouTube.
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