June 27 – July 3, 2025

Solar activity forecast for the period June 27 – July 3, 2025

Issued: 2025 Jun 26 2100 UTC

Activity level from Jun 27 to Jun 30: 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 100-160 f.u.
Events: class C: 1-22/day, class M: 0-6/day, class X: 0-1/day, proton: 0-1/period
Relative sunspot number (Ri): in the range 20-150

Activity level from Jul 1 to Jul 3: 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 100-160 f.u.
Events: class C: 1-22/day, class M: 0-6/day, class X: 0-1/day, proton: 0-1/period
Relative sunspot number (Ri): in the range 20-150

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

Geomagnetic activity forecast for the period June 27 – July 3, 2025

Issued: 2025 Jun 26 2130 UTC

Quiet to active: Jul 1 – 3
Unsettled to minor storm: Jun 27 – 30

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