Issued: 2026 June 05 17:00 UTC


Analysis from June 04/1700 UTC to June 05/1700 UTC:

Sunspot Regions on the Disk 05/1515 UTC (SDO Continuum): 9
The Largest Event: C4.1 from region 4455 at 05/1503 UT
X-ray background flux (1.0-8.0 A) June 04: B9.1
Radio Flux 10.7 cm at 04/2300 UTC (Penticton): 147
Solar Wind Speed at 05/1643 UTC: 551.4 km/s, density : 3.9 p/cm^3


Forecast:

Activity level will be: low to moderate - explanation
Event probabilities: Class C: 99%, Class M: 35%, Class X: 10%, Proton: 05%
X-ray background flux (1.0-8.0 A): in the range B8.0-B9.0
Radio Flux 10.7 cm: a fluctuation in the range 135-159

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