Predikce sluneční a geomagnetické aktivity

Solar activity forecast for the period

August 07 - August 13, 2026

Activity level:	low
X-ray background flux (1.0-8.0 A):	in the range B2.5-B8.2
Radio flux (10.7 cm):	a fluctuation in the range 99-143
Events:	class C (0-8/day), class M (0-1/period), class X (0-0/period), proton (0-0/period)
Relative sunspot number (Ri):	in the range 37-101

Vlastislav Feik
RWC Prague, Astronomical Institute, Solar Dept., Ondrejov, Czech Republic
e-mail: sunwatch(at)asu.cas.cz

Geomagnetic activity forecast for the period

August 07 - August 13, 2026

Quiet:	Aug 8 - 9, 12 - 13
Unsettled:	Aug 9 - 10, 11 - 12
Active:	Aug 10 - 11
Minor storm:	about Jul 10
Major storm:	0
Severe storm:	0
Geomagnetic activity summary:	Next week, at most, we expect geomagnetic activity at most at quiet to unsellted level. More unsettled conditions with possible active event can be expected about August 10 - 11. Then, we expect at most quiet to unsettled conditions return.

Tomas Bayer, RWC Prague
Institute of Geophysics of the ASCR, Prague
Department of Geomagnetism
Budkov observatory (BDV)

Geomagnetic activity forecast for the period

August 07 - August 13, 2026

Remarks:

Weekly Commentary on the Sun, the Magnetosphere, and the Earth's Ionosphere August 07 - August 13, 2026
Weekly Commentary on the Sun, the Magnetosphere, and the Earth's Ionosphere, August 6, 2026

The effects of the expected decline in solar activity (within the context of the 27-day cycle), which began before the end of July, were exacerbated by the geomagnetic disturbance that occurred on August 2–3. The effects of this decline will still be felt in the ionosphere during the first third of August. The second third of the month will bring an improvement. Then, in the final third, when solar radiation levels will once again be elevated, the approaching fall will also have a noticeable and positive effect on the ionosphere.

F. K. Janda, A.R.S. OK1HH

e-mail: ok1hh(at)crk.cz; ok1hh(at)rsys.cz

Pmail: OK1HH(at)OK0NAG.#BOH.CZE.EU