Solar activity forecast for the period September 07 - September 08, 2026

Issued: 2026 September 06 17:00 UTC


Analysis from September 05/1700 UTC to September 06/1700 UTC:

Sunspot Regions on the Disk 06/1623 UTC (SDO Continuum): 8
The Largest Event: C8.5 from Region 4524 at 05/1746 UT
X-ray background flux (1.0-8.0 A) September 05: B4.4
Radio Flux 10.7 cm at 05/2300 UTC (Penticton): 111
Solar Wind Speed at 06/1240 UTC: 374.1 km/s, Density: 3.3 p/cm^3


Forecast:

activity level will be low to moderate
Event probabilities: Class C: 80, Class M: 35, Class X: 10, Proton: 10
X-ray background flux (1.0-8.0 A): in the range B4.8-B5.6
Radio Flux 10.7 cm: a fluctuation in the range 110-115

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