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Tuesday, April 08, 2025 20:33:40 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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CH HSS Influences Likely on 29-31 October, 2023

CH HSS Effects 29-31 October, 2023
CH HSS Influences Likely on 29-31 October, 2023
published: Monday, October 30, 2023 19:05 UTC

CH HSS influences to increase geomagnetic responses 29-31 October, 2023. GOES-16 SUVI / 284A and 195A imagery from 27 Oct at 1230 UTC reveal the CH features - seen as the darker areas near the center of the solar disk. Learn more about GOES satellite imagery at https://www.swpc.noaa.gov/products/goes-solar-ultraviolet-imager-suvi and about CH HSS at https://www.swpc.noaa.gov/phenomena/coronal-holes  Also, continue to visit our webpage for the latest information and forecasts.