Týždenná predpoveď slnečnej
a geomagnetickej aktivity

Solar activity forecast for the period August 7 – 13, 2026

Issued: 2026 Aug 6 2100 UTC

Activity level from Aug 7 to Aug 10: mostly low to moderate
X-ray background flux (1.0-8.0 A): in the range B1.0-C1.0
Radio flux (10.7 cm): a fluctuation in the range 90-140 f.u.
Events: class C: 0-18/day, class M: 0-4/day, class X: 0-1/period, proton: 0-1/period
Relative sunspot number (Ri): in the range 10-125

Activity level from Aug 11 to Aug 13: mostly low to moderate
X-ray background flux (1.0-8.0 A): in the range B1.0-C1.0
Radio flux (10.7 cm): a fluctuation in the range 90-140 f.u.
Events: class C: 0-18/day, class M: 0-4/day, class X: 0-1/period, proton: 0-1/period
Relative sunspot number (Ri): in the range 10-125

Jozef Lesko
Vihorlat observatory, Slovak Republic
e-mail: safor (at) protonmail.ch

Geomagnetic activity forecast for the period August 7 – 13, 2026

Issued: 2026 Aug 6 2130 UTC

Quiet to active: Aug 7 – 13

Jozef Lesko
Vihorlat observatory, Slovak Republic
e-mail: safor (at) protonmail.ch