Solar activity forecast for the period January 22 - January 23, 2025

Issued: 2025 January 21 17:00 UTC


Analysis from January 20/1700 UTC to January 21/1700 UTC:

Sunspot Regions on the Disk 21/1430 UTC (SDO Continuum): 11
The Largest Event: M3.4 from Region 3967 at 21/1039 UT
X-ray background flux (1.0-8.0 A) January 20: C1.8
Radio Flux 10.7 cm at 20/2300 UTC (Penticton): -
Solar Wind Speed at 21/1645 UTC: 547.1 km/s, Density: 0.7 p/cm^3


Forecast:

activity level will be low to moderate
Event probabilities: Class C: 85, Class M: 55, Class X: 25, Proton: 10
X-ray background flux (1.0-8.0 A): in the range C1.2-C1.8
Radio Flux 10.7 cm: a fluctuation in the range 222-246

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