Solar activity forecast for the period September 06 - September 07, 2026

Issued: 2026 September 05 17:00 UTC


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

Sunspot Regions on the Disk 05/1623 UTC (SDO Continuum): 9
The Largest Event: M1.0 from Region 4520 at 05/1518 UT
X-ray background flux (1.0-8.0 A) September 04: B7.2
Radio Flux 10.7 cm at 04/2300 UTC (Penticton): 109
Solar Wind Speed at 05/1645 UTC: 366.5 km/s, Density: 3.7 p/cm^3


Forecast:

activity level will be low to moderate
Event probabilities: Class C: 80, Class M: 30, Class X: 05, Proton: 05
X-ray background flux (1.0-8.0 A): in the range B4.0 - B5.0
Radio Flux 10.7 cm: a fluctuation in the range 108-114

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