Solar activity forecast for the period October 26 - October 27, 2026

Issued: 2026 October 25 17:00 UTC


Analysis from October 24/1700 UTC to October 25/1700 UTC:

Sunspot Regions on the Disk 25/1623 UTC (SDO Continuum): 2
The Largest Event: B9.1 from Region 4560 at 25/1226 UT
X-ray background flux (1.0-8.0 A) October 24: B4.0
Radio Flux 10.7 cm at 24/2300 UTC (Penticton): 0
Solar Wind Speed at 25/1645 UTC: 0 km/s, Density: 0 p/cm^3


Forecast:

activity level will be low
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 B2.0-B3.0
Radio Flux 10.7 cm: a fluctuation in the range 88-95

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