April 28 – May 4, 2023

Solar activity forecast for the period April 28 – May 4, 2023

Issued: 2023 Apr 27 2100 UTC

Activity level from Apr 28 to May 1: low to high
X-ray background flux (1.0-8.0 A): in the range B5.0-C3.0
Radio flux (10.7 cm): a fluctuation in the range 120-180 f.u.
Events: class C (2-20/day), class M (0-4/day), class X (0-1/period), proton (0/period)
Relative sunspot number (Ri): in the range 50-155

Activity level from May 2 to May 4: low to high
X-ray background flux (1.0-8.0 A): in the range B5.0-C3.0
Radio flux (10.7 cm): a fluctuation in the range 120-180 f.u.
Events: class C (2-20/day), class M (0-4/day), class X (0-1/period), proton (0/period)
Relative sunspot number (Ri): in the range 50-155

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

Geomagnetic activity forecast for the period April 28 – May 4, 2023

Issued: 2023 Apr 27 2130 UTC

Unsettled to minor storm: Apr 28 – 30
Quiet to active: May 1 – 4

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