Solar activity forecast for the period April 26 - April 27, 2025

Issued: 2025 April 25 17:00 UTC


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

Sunspot Regions on the Disk 25/1115 UTC (SDO Continuum): 13
The Largest Event: C3.0 from Region S17E80 at 25/0405 UT
X-ray background flux (1.0-8.0 A) April 24: C1.0
Radio Flux 10.7 cm at 24/2300 UTC (Penticton): 169
Solar Wind Speed at 25/1645 UTC: 460.5 km/s, Density: 1 p/cm^3


Forecast:

activity level will be low
Event probabilities: Class C: 85, Class M: 45, Class X: 15, Proton: 05
X-ray background flux (1.0-8.0 A): in the range B8.9-B9.9
Radio Flux 10.7 cm: a fluctuation in the range 157-181

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