Solar activity forecast for the period June 14 - June 15, 2026

Issued: 2026 June 13 17:00 UTC


Analysis from June 12/1700 UTC to June 13/1700 UTC:

Sunspot Regions on the Disk 13/1315 UTC (SDO Continuum): 8
The Largest Event: C2.5 from Region S21W73 at 13/1309 UT
X-ray background flux (1.0-8.0 A) June 12: B9.4
Radio Flux 10.7 cm at 12/2300 UTC (Penticton): 127
Solar Wind Speed at 13/1645 UTC: 602.7 km/s, Density: 2.3 p/cm^3


Forecast:

activity level will be very low to low
Event probabilities: Class C: 85, Class M: 35, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range B7.5-C1.0
Radio Flux 10.7 cm: a fluctuation in the range 115-139

Vlastislav Feik
RWC Prague, Astronomical Institute, Solar Dept., Ondrejov, Czech Republic
e-mail: sunwatch(at)asu.cas.cz