Solar activity forecast for the period December 15 - December 21, 2017 Prečítať

Solar activity forecast for the period December 15 - December 21, 2017

Issued: 2017 Dec 14 2145 UTC

Activity level from Dec 15 to Dec 18: mostly very low

X-ray background flux (1.0-8.0 A): in the range A1.5-A8.0

Radio flux (10.7 cm): a fluctuation in the range 65-80 f.u.

Events: class C (0-1/period), class M (0/period), class X (0/period), proton (0/period)

Relative sunspot number (Ri): in the range 0-20

Activity level from Dec 19 to Dec 21: mostly very low

X-ray background flux (1.0-8.0 A): in the range A1.0-A8.5

Radio flux (10.7 cm): a fluctuation in the range 65-80 f.u.

Events: class C (0-1/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