Solar activity forecast for the period October 05 - October 06, 2026

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
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