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Boulder Magnetometer | NOAA / NWS Space Weather Prediction Center

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Friday, January 10, 2025 20:21:33 UTC

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HF Radio: Weak or minor degradation of HF radio communication on sunlit side, occasional loss of radio contact.
Navigation: Low-frequency navigation signals degraded for brief intervals.
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Boulder Magnetometer

This plot provides SWPC forecasters with a near real-time view of the geomagnetic field fluctuations at the Boulder magnetometer station.

The Boulder Magnetometer provides one set of measurements of the Earth's geomagnetic field, used to provide details of the  surrounding space environment.

The Boulder Magnetometer has been in operation since 1961, by the USGS, and has provided a complete set of the magnetic field components D, H and Z since then. SWPC makes use of the data in it's daily forecast operations. A document of the early history of the site is available (USGS).









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