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Friday, June 13, 2025 21:59:50 UTC

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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.
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G1 (Minor) Geomagnetic Storms Observed - 11 June 2017

G1 (Minor) Geomagnetic Storms Observed - 11 June 2017
published: Monday, June 12, 2017 15:05 UTC

G1 (Minor) geomagnetic storm conditions were observed at 11/1759 UTC due to an observed SSBC and the arrival of a recurrent, positive-polarity CH HSS.