Weekly forecast
Data type:
Legacy format
Legacy format
Forecast issued date:
Activity level: very low to low X-ray background flux (1.0-8.0 A): in the range B3.2-B9.5 Radio flux (10.7 cm): a fluctuation in the range: 95-132 Events: class C (0-2/day), class M (0/period), class X (0/period), proton (0/period) Relative sunspot number (Ri): in the range 41-109 Vlastislav Feik RWC Prague, Astronomical Institute, Solar Dept., Ondrejov, Czech Republic
Quiet: Nov 10 - 11 Unsettled: Nov 8 - 9, 11 - 12 Active: Nov 6 - 9 Minor storm: Nov 6 - 8 Major storm: possible about Nov 7 Severe storm: 0 Next days, we expect a significant geomagnetic activity increase because of a large coronal hole 09/-4. Next days, we expect unsettled to active level generally with a possible storming event. We expect at most minor storm event, a major storm event is possible but unlikely. Since Sunday, November 8, we expect a partial decrease to at most unsettled level followed by a quiet to unsettled episode. At the end of currently forecasted period, a partial activity increase to unsettled to active level can be expected. Tomas Bayer RWC Prague Institute of Geophysics of the ASCR, Prague Department of Geomagnetism Budkov observatory (BDV)
Weekly Commentary on the Sun, the Magnetosphere, and the Earth's Ionosphere, November 5, 2026 During the last third of October, solar activity declined steadily. The increase did not begin until two weeks later while could last another two weeks. Low geomagnetic activity—particularly between October 24 and 29—led to an improvement in shortwave ionospheric propagation on a global scale, despite low solar activity. The current increase in solar activity will continue into the first half of November. Given regular seasonal changes, a continued improvement in ionospheric shortwave propagation can be expected on most days during the first half of November. http://ok1hh.nagano.cz/ Emails: ok1hh(at)crk.cz, ok1hh(at)rsys.cz Pmail: OK1HH(at)OK0NAG.#BOH.CZE.EU
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