Solar activity forecast for the period April 09 - April 10, 2025

Issued: 2025 April 08 17:00 UTC


Analysis from April 07/1700 UTC to April 08/1700 UTC:

Sunspot Regions on the Disk 08/1515 UTC (SDO Continuum): 8
The Largest Event: C3.0 from Region 4057 at 08/0603 UT
X-ray background flux (1.0-8.0 A) April 07: C1.2
Radio Flux 10.7 cm at 07/2300 UTC (Penticton): 162
Solar Wind Speed at 08/1645 UTC: 528 km/s, Density: 1 p/cm^3


Forecast:

activity level will be low
Event probabilities: Class C: 99, Class M: 65, Class X: 35, Proton: 15
X-ray background flux (1.0-8.0 A): in the range C1.0-C1.5
Radio Flux 10.7 cm: a fluctuation in the range 150-174

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