February 17 – 23, 2023

Solar activity forecast for the period February 17 – 23, 2023

Issued: 2023 Feb 16 2100 UTC

Activity level from Feb 17 to Feb 20: low to high
X-ray background flux (1.0-8.0 A): in the range B6.0-C3.0
Radio flux (10.7 cm): a fluctuation in the range 135-185 f.u.
Events: class C (1-15/day), class M (0-5/day), class X (0-1/period), proton (0/period)
Relative sunspot number (Ri): in the range 65-155

Activity level from Feb 21 to Feb 23: low to high
X-ray background flux (1.0-8.0 A): in the range B4.0-C2.0
Radio flux (10.7 cm): a fluctuation in the range 120-170 f.u.
Events: class C (1-15/day), class M (0-5/day), class X (0-1/period), proton (0/period)
Relative sunspot number (Ri): in the range 50-145

Jozef Lesko
Roztoky Observatory, Slovak Republic
https://roztoky.space/category/predpovede/
e-mail: safor (at) protonmail.ch

Geomagnetic activity forecast for the period February 17 – 23, 2023

Issued: 2023 Feb 16 2130 UTC

Quiet to active: Feb 21 – 23
Unsettled to minor storm: Feb 17 – 20

Jozef Lesko
Roztoky Observatory, Slovak Republic
https://roztoky.space/category/predpovede/
e-mail: safor (at) protonmail.ch