It is not uncommon to experience less sunspots and decreases in solar activity as a solar cycle progresses. Despite this current lull, the solar cycle continues to progress towards maximum https://www.swpc.noaa.gov/products/solar-cycle-progression NSO/GONG Helioseismology is an important tool to help SWPC forecasters garner hints of potential active region development beyond the solar limb. However, caution is always used with these observations because of capability limitations and since sunspot groups can form quite quickly. To learn more about NSO/GONG Helioseismology visit https://gong.nso.edu/info/helioseismology.html and to observe various NSO/GONG imagery imagery, visit https://gong.nso.edu/
NOAA Scales mini
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
Navigation: Low-frequency navigation signals degraded for brief intervals.
Low Solar Activity Likely 20-22 Oct
Low Solar Activity Likely 20-22 Oct