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

Issued: 2026 May 25 17:00 UTC


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

Sunspot Regions on the Disk 25/1623 UTC (SDO Continuum): 7
The Largest Event: C4.8 from Region 14446 at 24/2359 UT
X-ray background flux (1.0-8.0 A) May 24: B7.9
Radio Flux 10.7 cm at 24/2300 UTC (Penticton): 135
Solar Wind Speed at 25/1645 UTC: 389.5 km/s, Density: 2.6 p/cm^3


Forecast:

activity level will be low to moderate
Event probabilities: Class C: 99, Class M: 45, Class X: 10, Proton: 10
X-ray background flux (1.0-8.0 A): in the range B9.8 - C1.8
Radio Flux 10.7 cm: a fluctuation in the range 137-142

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