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The flash flood guidance system (FFGS) was designed and developed by the Hydrologic Research Center, a non-profit public-benefit corporation located in San Diego, CA, US, for use by meteorological and hydrologic forecasters throughout the world. The primary purpose of the FFGS is to provide operational forecasters and disaster management ...
Property damage. ~3 billion [2] In early February 2024, two atmospheric rivers brought extensive flooding, intense winds, and power outages to portions of California. The storms caused record-breaking rainfall totals to be observed in multiple areas, as well as the declaration of states of emergency in multiple counties in Southern California.
California groundwater basins, subbasins, and hydrologic regions. The California Department of Water Resources recognizes 10 hydrologic regions and three additional drainage areas within the U.S. state of California. The hydrologic regions are further subdivided into 515 groundwater basins.
The South Coast hydrologic region has a surface area of about 11,100 sq mi (29,000 km 2 ), and includes all of Orange County, major portions of Los Angeles, Riverside, San Bernardino, San Diego, and Ventura counties, and a small portion of Santa Barbara County. [1] The state-defined South Coast hydrologic region is roughly equivalent to the ...
Map of regions covered by the 122 Weather Forecast Offices. The National Weather Service operates 122 weather forecast offices. Each weather forecast office (WFO or NWSFO) has a geographic area of responsibility, also known as a county warning area, for issuing local public, marine, aviation, fire, and hydrology forecasts.
The Southern California coastal subregion, sometimes called the South Coast Hydrologic Subregion, is a second-level subdivision [1] covering is approximately 11,000 sq mi (28,000 km 2; 7,000,000-acre) and extends from Rincon Creek on the north to the international border with Mexico on the south. [2] The South Coast Hydrologic Subregion is ...
The 1939 California tropical storm, also known as the 1939 Long Beach tropical storm, and El Cordonazo (referring to the Cordonazo winds or the "Lash of St. Francis" ( Spanish: el cordonazo de San Francisco )), was a tropical cyclone that affected Southern California in September 1939. Formerly classified a hurricane, [1] it was the first ...
On NOAA's HeatRisk tool, the scale ranges from 0 or green, meaning little or no risk from expected heat, to 4 or magenta, which indicates extreme and/or long-duration heat-related impacts.