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Alerts, Watches and Warnings | NOAA / NWS Space Weather Prediction Center

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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Thursday, March 13, 2025 09:05:11 UTC

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NOAA Scales mini

R1 (Minor) Radio Blackout Impacts
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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.
More about the NOAA Space Weather Scales

Alerts, Watches and Warnings

Similar to the bulletins put out by the NWS local forecast offices, SWPC provides Alerts, Watches and Warnings to the public at large about what to expect from Space Weather. These bulletins are levels of severity of the solar activity that can be expected to impact the Earth’s environment.

Previous text files of the alerts and Warnings page are available.

The current Alerts, Watches and Warnings data is available directly from this JSON file, and previous files of this information are also available.









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