Týždenná predpoveď
slnečnej aktivity

Solar activity forecast for the period December 14 – December 20, 2018
Issued: 2018 Dec 13 2200 UTC

Activity level from Dec 14 to Dec 17: very low
X-ray background flux (1.0-8.0 A): in the range A0.0-A6.0
Radio flux (10.7 cm): a fluctuation in the range 65-75 f.u.
Events: class C (0/period), class M (0/period), class X (0/period), proton (0/period)
Relative sunspot number (Ri): in the range 0-25

Activity level from Dec 18 to Dec 20: very low
X-ray background flux (1.0-8.0 A): in the range A0.0-A6.0
Radio flux (10.7 cm): a fluctuation in the range 65-75 f.u.
Events: class C (0/period), class M (0/period), class X (0/period), proton (0/period)
Relative sunspot number (Ri): in the range 0-25

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

Geomagnetic activity forecast for the period December 14 – December 20, 2018
Issued: 2018 Dec 13 2230 UTC

Quiet: Dec 14 – 15, 19 – 20
Quiet to unsettled: Dec 16 – 18

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