Týždenná predpoveď slnečnej
a geomagnetickej aktivity

Activity level from May 15 to May 18: mostly low to moderate
X-ray background flux (1.0-8.0 A): in the range B3.0-C1.0
Radio flux (10.7 cm): a fluctuation in the range 90-145 f.u.
Events: class C: 0-16/day, class M: 0-4/day, class X: 0-1/period, proton: 0-1/period
Relative sunspot number (Ri): in the range 20-140

Activity level from May 19 to May 21: mostly low to moderate
X-ray background flux (1.0-8.0 A): in the range B3.0-C2.0
Radio flux (10.7 cm): a fluctuation in the range 95-160 f.u.
Events: class C: 0-22/day, class M: 0-4/day, class X: 0-1/period, proton: 0-1/period
Relative sunspot number (Ri): in the range 25-155

Jozef Lesko
Vihorlat observatory, Slovak Republic
e-mail: safor (at) protonmail.ch

Quiet to active: May 18 – 21
Unsettled to minor storm: May 15 – 17