Týždenná predpoveď slnečnej
a geomagnetickej aktivity

Solar activity forecast for the period January 22 – 28, 2021, 2021
Issued: 2021 Jan 21 2100 UTC

Activity level from Jan 22 to Jan 25: very low to low
X-ray background flux (1.0-8.0 A): in the range A2.0-B2.0
Radio flux (10.7 cm): a fluctuation in the range 75-90 f.u.
Events: class C (0-4/day), class M (0/period), class X (0/period), proton (0/period)
Relative sunspot number (Ri): in the range 0-40

Activity level from Jan 26 to Jan 28: very low to low
X-ray background flux (1.0-8.0 A): in the range A2.0-B2.0
Radio flux (10.7 cm): a fluctuation in the range 75-95 f.u.
Events: class C (0-6/day), class M (0/period), class X (0/period), proton (0/period)
Relative sunspot number (Ri): in the range 0-45

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

Geomagnetic activity forecast for the period January 22 – 28, 2021, 2021

Issued: 2021 Jan 21 2130 UTC

Quiet: Jan 22 – 24
Quiet to unsettled: Jan 25 – 28

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