Weekly forecast
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Activity level: mostly Low to Moderate X-ray background flux (1.0-8.0 A): in the range B1.5 - B7.0 Radio flux (10.7 cm): a fluctuation in the range 90-105 (Jun 1 - 4) and 100-120 (July 5 - 7) Events: class C (1-3/day), class M (0-1/period), class X (0-1/period), proton (0-1/period) Relative sunspot number (Ri): in the range 60-150 Jana Hrabalova RWC Prague, Astronomical Institute, Solar Dept., Ondrejov, Czech Republic e-mail: sunwatch(at)asu.cas.cz
Quiet: Jun 30, Jul 1 -7 Unsettled: Jul 3 - 4, 7 Active: 0 Minor storm: 0 Major storm: 0 Severe storm: 0 Geomagnetic activity summary: After the last active events (June 24 - 26) which did not exceed the active level without storming event (local K-index = 4), we expect geomagnetic activity decrease to quiet to unsettled level during the coming seven days. More unsettled character of geomagnetic activity can be expected about July 3 - 4, and also at the end of currently forecasted period, i.e. July 7. Other days, we expect geomagnetic activity at quiet to unsettled level, nearer to the lower one. 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 - June 30, 2022 (Free continuation of predictions of the Earth's magnetic field activity, published in the years 1978 - 2021.) Solar activity has declined over the last seven days. Geomagnetic activity was highest on June 26 (G1-class geomagnetic storm broke out around midnight UT on June 25-26) and is lowest since on June 28-29. June 26th, a big, bright CME billowed away from the sun's southern hemisphere. A slow-moving CME that left the sun could pass close to Earth on June 30. The near miss, if it occurs, could disturb our planet's magnetic field. Dark filament of magnetism erupted in the sun's northern hemisphere on June 28th, but no CME was observed after the explosion. Shortwave propagation conditions were relatively worst on June 26-27. After that, they started to improve, but only very slowly due to the declining solar activity. F. K. Janda, A.R.S. OK1HH Emails: ok1hh(at)crk.cz, ok1hh(at)rsys.cz Pmail: OK1HH(at)OK0NAG.#BOH.CZE.EU
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