July 18 – 24, 2025

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

Issued: 2025 Jul 17 2100 UTC

Activity level from Jul 18 to Jul 21: low to high
X-ray background flux (1.0-8.0 A): in the range B7.0-C8.0
Radio flux (10.7 cm): a fluctuation in the range 130-195 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 50-190

Activity level from Jul 22 to Jul 24: low to high
X-ray background flux (1.0-8.0 A): in the range B6.0-C7.0
Radio flux (10.7 cm): a fluctuation in the range 120-190 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 40-185

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

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

Issued: 2025 Jul 17 2130 UTC

Quiet to active: Jul 18 – 24

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