December 15 – 21, 2023

Solar activity forecast for the period December 15 – 21, 2023

Issued: 2023 Dec 14 2100 UTC

Activity level from Dec 15 to Dec 18: moderate to very high
X-ray background flux (1.0-8.0 A): in the range B8.0-C3.0
Radio flux (10.7 cm): a fluctuation in the range 125-180 f.u.
Events: class C (2-22/day), class M (0-6/day), class X (0-1/period), proton (0-1/period)
Relative sunspot number (Ri): in the range 60-165

Activity level from Dec 19 to Dec 21: low to high
X-ray background flux (1.0-8.0 A): in the range B7.0-C3.0
Radio flux (10.7 cm): a fluctuation in the range 130-185 f.u.
Events: class C (2-22/day), class M (0-6/day), class X (0-1/period), proton (0/period)
Relative sunspot number (Ri): in the range 60-170

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

Geomagnetic activity forecast for the period December 15 – 21, 2023

Issued: 2023 Dec 14 2130 UTC

Quiet to unsettled: Dec 20 – 21
Unsettled to active: Dec 17 – 19
Unsettled to minor storm: Dec 15 – 16

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