May 12 – 18, 2023

Solar activity forecast for the period May 12 – 18, 2023

Issued: 2023 May 11 2100 UTC

Activity level from May 12 to May 15: low to high
X-ray background flux (1.0-8.0 A): in the range B6.0-C2.0
Radio flux (10.7 cm): a fluctuation in the range 130-190 f.u.
Events: class C (2-20/day), class M (0-6/day), class X (0-1/period), proton (0/period)
Relative sunspot number (Ri): in the range 55-170

Activity level from May 16 to May 18: low to high
X-ray background flux (1.0-8.0 A): in the range B5.0-C2.0
Radio flux (10.7 cm): a fluctuation in the range 125-185 f.u.
Events: class C (2-20/day), class M (0-6/day), class X (0-1/period), proton (0/period)
Relative sunspot number (Ri): in the range 50-165

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

Geomagnetic activity forecast for the period May 12 – 18, 2023

Issued: 2023 May 11 2130 UTC

Quiet to active: May 12 – 18

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