Solar activity forecast for the period June 10 - June 11, 2026

Issued: 2026 June 09 17:00 UTC


Analysis from June 08/1700 UTC to June 09/1700 UTC:

Sunspot Regions on the Disk 09/1145 UTC (SDO Continuum): 10
The Largest Event: C4.5 from Region 4465 at 09/0423 UT
X-ray background flux (1.0-8.0 A) June 08: B8.9
Radio Flux 10.7 cm at 08/2300 UTC (Penticton): 130
Solar Wind Speed at 09/1642 UTC: 443.2 km/s, Density: 5.7 p/cm^3


Forecast:

activity level will be low
Event probabilities: Class C: 99, Class M: 45, 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 118-142

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