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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. The influence of the ocean generally moderates temperature extremes, creating warmer winters and substantially cooler summers in coastal areas.
The Weather Prediction Center's Excessive Rainfall Outlook on February 4 NOAA Automated Atmospheric River Detection Real-time Application to Satellite-Derived IWV Data on February 3 From February 1 to February 2, 2024, California experienced the impact of the first Pineapple Express storm caused by the atmospheric river, which subsequently ...
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Map of regions covered by the 122 Weather Forecast Offices. The National Weather Service operates 122 weather forecast offices. [1] [2] 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.
While some measurements suggest the 2015-2016 El Niño was the strongest on record since 1950, [29] Southern California received below average precipitation contrary to what the Climate Prediction Center predicted leading up to the winter months. [31]
An example of 500 mbar geopotential height prediction from a numerical weather prediction model. In the past, human forecasters were responsible for generating the weather forecast based upon available observations. [72] Today, human input is generally confined to choosing a model based on various parameters, such as model biases and ...
An airport station was established at Mines Field (now LAX) in 1931, with a District Forecast Office established there on April 7, 1947, having relocated from Burbank. This satellite office was open until in 1997 when it was redesignated a NWS Contract Meteorological Observatory.
Weather reconnaissance aircraft, such as this WP-3D Orion, provide data that is then used in numerical weather forecasts.. The atmosphere is a fluid.As such, the idea of numerical weather prediction is to sample the state of the fluid at a given time and use the equations of fluid dynamics and thermodynamics to estimate the state of the fluid at some time in the future.