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National Oceanic and Atmospheric Administration

Thursday, July 03, 2025 02:27:15 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

New JSON Data Now Available

New JSON Data Now Available
published: Monday, December 03, 2018 21:04 UTC
Beginning December 3, 2018, SWPC will be adding a variety of space weather data in the JSON format via our data service. Much of this data is currently available either on our website or FTP site.  No existing data or formats are being discontinued. The root directory for the new JSON format data can be found here: