Solar activity forecast for the period May 01 - May 02, 2025

Issued: 2025 April 30 17:00 UTC


Analysis from April 29/1700 UTC to April 30/1700 UTC:

Sunspot Regions on the Disk 30/0447 UTC (SDO Continuum): 5
The Largest Event: M2.0 from Region 4079 at 30/0751 UT
X-ray background flux (1.0-8.0 A) April 29: B9.0
Radio Flux 10.7 cm at 29/2300 UTC (Penticton): 150
Solar Wind Speed at 30/1645 UTC: 425.1 km/s, Density: 11.1 p/cm^3


Forecast:

activity level will be moderate
Event probabilities: Class C: 99, Class M: 55, Class X: 20, Proton: 10
X-ray background flux (1.0-8.0 A): in the range B8.0-C1.5
Radio Flux 10.7 cm: a fluctuation in the range 140-165

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