Solar activity forecast for the period March 28 - March 29, 2026

Issued: 2026 March 27 17:00 UTC


Analysis from March 26/1700 UTC to March 27/1700 UTC:

Sunspot Regions on the Disk 27/1344 UTC (SDO Continuum): 11
The Largest Event: C5.4 from Region S22E77 at 27/1002 UT
X-ray background flux (1.0-8.0 A) March 26: B9.8
Radio Flux 10.7 cm at 26/2300 UTC (Penticton): 156
Solar Wind Speed at 27/1645 UTC: 385 km/s, Density: 0.1 p/cm^3


Forecast:

activity level will be low
Event probabilities: Class C: 99, Class M: 40, Class X: 15, Proton: 10
X-ray background flux (1.0-8.0 A): in the range B9.0-C1.0
Radio Flux 10.7 cm: a fluctuation in the range 144-168

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