Solar activity forecast for the period March 23 - March 24, 2026

Issued: 2026 March 22 17:00 UTC


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

Sunspot Regions on the Disk 22/1231 UTC (SDO Continuum): 11
The Largest Event: B9.6 from Region 4399 at 22/1352 UT
X-ray background flux (1.0-8.0 A) March 21: B3.5
Radio Flux 10.7 cm at 21/2300 UTC (Penticton): 108
Solar Wind Speed at 22/1646 UTC: 653.4 km/s, Density: 2.6 p/cm^3


Forecast:

activity level will be very low to low
Event probabilities: Class C: 65, Class M: 25, Class X: 15, Proton: 10
X-ray background flux (1.0-8.0 A): in the range B3.1-B3.7
Radio Flux 10.7 cm: a fluctuation in the range 100-110

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