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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.
Snow forecast map. The map below shows the probability that an area could receive more than 4 inches of snow. Use the slider at the top left to toggle by day. Winter weather forecast map: See full ...
Another day of gusty winds is forecast Wednesday for Southern California, where a rare "Particularly Dangerous Situation" red flag warning continues until 3 p.m. for western Los Angeles County and ...
The national weather forecast map for Wednesday, December 11, 2024, shows a cold front racing toward the East Coast as a potent storm lashes the region.
Eleven reservoirs have a storage capacity greater than or equal to 1,000,000 acre-feet (1.2 km 3); all of these except one are in or on drainages that feed into the Central Valley. The largest single reservoir in California is Shasta Lake, with a full volume of more than 4,552,000 acre-feet (5.615 km 3).
Progress in forecasting methods has allowed more efficient or "smart" operation at certain California reservoirs, such as Lake Mendocino. If dry weather is forecast, water is allowed to be stored above the legal flood control limit, rather than being wasted downstream. This program is known as "Forecast Informed Reservoir Operations". [50]
The National Weather Service warned Friday of flooding, rock slides, debris flows and more power outages. Friday weather forecast map Friday's national weather forecast map.
A standard weather phenomenon along the northern and central California coast from late spring to early fall. May Gray / June Gloom : A characteristic weather pattern of late spring (May and June) in which a combination of inland heat, off-shore cool water, and prevailing wind patterns bring foggy and overcast weather to coastal regions.