April 18 – 24, 2025

Solar activity forecast for the period April 18 – 24, 2025

Issued: 2025 Apr 17 2100 UTC

Activity level from Apr 18 to Apr 21: low to high
X-ray background flux (1.0-8.0 A): in the range C1.0-C9.0
Radio flux (10.7 cm): a fluctuation in the range 130-200 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 45-195

Activity level from Apr 22 to Apr 24: low to high
X-ray background flux (1.0-8.0 A): in the range C1.0-C9.0
Radio flux (10.7 cm): a fluctuation in the range 130-200 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 45-195

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

Geomagnetic activity forecast for the period April 18 – 24, 2025

Issued: 2025 Apr 17 2130 UTC

Unsettled to minor storm: Apr 18 – 24

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