Issued: 2026 July 22 17:00 UTC


Analysis from July 21/1700 UTC to July 22/1700 UTC:

Sunspot Regions on the Disk 22/1430 UTC (SDO Continuum): 6
The Largest Event: M3.6 from region 4493 at 22/0635 UT
X-ray background flux (1.0-8.0 A) July 21: B9.2
Radio Flux 10.7 cm at 21/2300 UTC (Penticton): 149
Solar Wind Speed at 22/1645 UTC: 479.8 km/s, density : 3.7 p/cm^3


Forecast:

Activity level will be: low to moderate - explanation
Event probabilities: Class C: 99%, Class M: 55%, Class X: 15%, Proton: 10%
X-ray background flux (1.0-8.0 A): in the range B9.0-C1.3
Radio Flux 10.7 cm: a fluctuation in the range 137-161

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