May 16 – 22, 2025

Solar activity forecast for the period May 16 – 22, 2025

Issued: 2025 May 15 2100 UTC

Activity level from May 16 to May 19: low to high
X-ray background flux (1.0-8.0 A): in the range B8.0-C8.0
Radio flux (10.7 cm): a fluctuation in the range 110-170 f.u.
Events: class C: 1-25/day, class M: 0-8/day, class X: 0-1/day, proton: 0-1/period
Relative sunspot number (Ri): in the range 30-165

Activity level from May 20 to May 22: low to high
X-ray background flux (1.0-8.0 A): in the range B8.0-C8.0
Radio flux (10.7 cm): a fluctuation in the range 115-180 f.u.
Events: class C: 1-25/day, class M: 0-8/day, class X: 0-1/day, proton: 0-1/period
Relative sunspot number (Ri): in the range 35-175

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

Geomagnetic activity forecast for the period May 16 – 22, 2025

Issued: 2025 May 15 2130 UTC

Quiet to active: May 16 – 22

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