Issued: 2026 October 04 17:00 UTC


Analysis from October 03/1700 UTC to October 04/1700 UTC:

Sunspot Regions on the Disk 04/1259 UTC (SDO Continuum): 4
The Largest Event: B9.3 from region 4546 at 04/0630 UT
X-ray background flux (1.0-8.0 A) October 03: B1.8
Radio Flux 10.7 cm at 03/2300 UTC (Penticton): 93
Solar Wind Speed at 04/1645 UTC: 522.3 km/s, density : 3.5 p/cm^3


Forecast:

Activity level will be: very low to low - explanation
Event probabilities: Class C: 55%, Class M: 10%, Class X: 01%, Proton: 01%
X-ray background flux (1.0-8.0 A): in the range B1.0-B2.0
Radio Flux 10.7 cm: a fluctuation in the range 81-105

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