Hvezdáreň Roztoky

October 29 – November 4, 2021

Solar activity forecast for the period October 29 – November 4, 2021

Issued: 2021 Oct 28 2100 UTC

Activity level from Oct 29 to Nov 1: low to moderate
X-ray background flux (1.0-8.0 A): in the range B1.0-B9.0
Radio flux (10.7 cm): a fluctuation in the range 90-120 f.u.
Events: class C (0-12/day), class M (0-3/day), class X (0-1/period), proton (0/period)
Relative sunspot number (Ri): in the range 15-80

Activity level from Nov 2 to Nov 4: mostly low
X-ray background flux (1.0-8.0 A): in the range B1.0-B9.0
Radio flux (10.7 cm): a fluctuation in the range 90-120 f.u.
Events: class C (0-12/day), class M (0-2/day), class X (0/period), proton (0/period)
Relative sunspot number (Ri): in the range 15-80

Jozef Lesko
Roztoky Observatory, Slovak Republic
www.osveta.sk/n/11283/astronomia.html
e-mail: safor (at) protonmail.ch

Geomagnetic activity forecast for the period October 29 – November 4, 2021

Issued: 2021 Oct 28 2130 UTC

Quiet to unsettled: Oct 29, Nov 1 – 4
Unsettled to minor storm: Oct 30 – 31

Jozef Lesko
Roztoky Observatory, Slovak Republic
www.osveta.sk/n/11283/astronomia.html
e-mail: safor (at) protonmail.ch