Týždenná predpoveď
slnečnej aktivity

Solar activity forecast for the period April 12 – April 18, 2019
Issued: 2019 Apr 11 2215 UTC

Activity level from Apr 12 to Apr 15: mostly very low
X-ray background flux (1.0-8.0 A): in the range A0.0-B2.0
Radio flux (10.7 cm): a fluctuation in the range 70-85 f.u.
Events: class C (0-1/day), class M (0/period), class X (0/period), proton (0/period)
Relative sunspot number (Ri): in the range 11-35

Activity level from Apr 16 to Apr 18: mostly very low
X-ray background flux (1.0-8.0 A): in the range A0.0-B2.0
Radio flux (10.7 cm): a fluctuation in the range 65-85 f.u.
Events: class C (0-1/day), class M (0/period), class X (0/period), proton (0/period)
Relative sunspot number (Ri): in the range 0-35

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

Geomagnetic activity forecast for the period April 12 – April 18, 2019

Issued: 2019 Apr 11 2245 UTC

Quiet: Apr 17 – 18
Quiet to unsettled: Apr 15 – 16
Quiet to active: Apr 12 – 14

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