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Wednesday, July 23, 2025 01:53:37 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

Update: R1 and R2 radio blackouts

Update: R1 and R2 radio blackouts
published: Monday, October 06, 2014 13:19 UTC

Regions 2172 and 2173 produced R1 (Minor) and R2 (Moderate) solar flare radio blackouts yesterday at 02/1744 UTC (1344 EDT) and 02/1901 UTC (1501 EDT) respectively. Analysis of SOHO/LASCO coronograph imagery confirms that the associated CME is not Earth-directed and no geomagnetic impacts are expected as a result of this event.

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