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The mountain is topped by an eight and a half story (84.5 feet tall) concrete radar tower (5 floors interior), known locally as "the Cube" or "the Box". [18] The tower was part of Almaden Air Force Station, a radar surveillance post which operated from 1958 to 1980. [19] The mountain is also the site of the Bay Area NEXRAD weather radar. [20]
MADRE over-the-horizon radar at the NRL's Chesapeake Bay Detachment U.S. Navy Relocatable Over-the-Horizon Radar station. The most common type of OTH radar, OTH-B (backscatter), [3] uses skywave or "skip" propagation, in which shortwave radio waves are refracted off an ionized layer in the atmosphere, the ionosphere, and return to Earth some distance away.
NEXRAD or Nexrad (Next-Generation Radar) is a network of 159 high-resolution S-band Doppler weather radars operated by the National Weather Service (NWS), an agency of the National Oceanic and Atmospheric Administration (NOAA) within the United States Department of Commerce, the Federal Aviation Administration (FAA) within the Department of Transportation, and the U.S. Air Force within the ...
Northern California mountains are under a winter storm warning as the region braces for another snowstorm this weekend.. The National Weather Service issued the warning Thursday. It goes into ...
A Doppler radar is a specialized radar that uses the Doppler effect to produce velocity data about objects at a distance. [1] It does this by bouncing a microwave signal off a desired target and analyzing how the object's motion has altered the frequency of the returned signal.
A powerful winter storm that blasted Northern California with strong winds and heavy rain, knocking out power, toppling trees — including one that killed a toddler — and flooding homes and ...
Polar mesospheric summer echoes (PMSE) have been studied, probing the mesosphere using the IRI as a powerful radar, and with a 28 MHz radar and two VHF radars at 49 MHz and 139 MHz. The presence of multiple radars spanning both HF and VHF bands allows scientists to make comparative measurements that may someday lead to an understanding of the ...
Skywatchers in Northern California could be in for a treat as heightened solar activity could make the northern lights visible on the horizon on Friday, May, 11, 2024 according to NOAA’s Space ...