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The climate of California varies widely from hot desert to alpine tundra, depending on latitude, elevation, and proximity to the Pacific Coast. California 's coastal regions, the Sierra Nevada foothills, and much of the Central Valley have a Mediterranean climate , with warmer, drier weather in summer and cooler, wetter weather in winter.
They also issue severe weather warnings, gather weather observations, and daily and monthly climate data for their assigned area. The local weather forecast offices also control the broadcasts of weather information on the NOAA Weather Radio All Hazards stations. [3] The NWS is divided into six regions.
NCDC also maintained World Data Center for Meteorology, Asheville. The four World Centers (U.S., Russia, Japan and China) have created a free and open situation in which data and dialogue are exchanged. NCDC maintained the U.S. Climate Reference Network datasets and a vast number of other climate monitoring products. [7]
The most substantial rainfall occurred in the Eel and Russian River basins, leading to severe flooding. The Russian River at Guerneville reached a flood stage of 45 feet, about 3.5 feet lower than the record 48.56 feet stage in 1986, but still the second-highest stage since 1995.
In 2016, the average annual precipitation levels were lower because of a drought that was coming to an end at that time. The minimal rainfall in that year showed that 119 landslides had been moving. Comparatively, in 2017, there were very extreme levels of precipitation in the Central Valley, which cause 312 landslides to move that year. [47]
The Climate Prediction Center (CPC) in College Park, Maryland is responsible for all of the NWS's climate-related forecasts. Their mission is to "serve the public by assessing and forecasting the impacts of short-term climate variability, emphasizing enhanced risks of weather-related extreme events, for use in mitigating losses and maximizing ...
A Climate Data Record (CDR) is a specific definition of a climate data series, developed by the Committee on Climate Data Records from NOAA Operational Satellites of the National Research Council at the request of NOAA in the context of satellite records. [1]
American Samoa's climate regime is dominated by southeast trade winds. The island dependency is wet, with annual rainfall averaging near 120 inches (3,000 mm) at the airport, with amounts closer to 200 inches (5,100 mm) in other areas. [77] There is a distinct rainy season when tropical cyclones occasionally visit between November and April.