Issued: 2025 December 15 17:00 UTC


Analysis from December 14/1700 UTC to December 15/1700 UTC:

Sunspot Regions on the Disk 15/1023 UTC (SDO Continuum): 6
The Largest Event: C2.0 from region 4304 at 15/1225 UT
X-ray background flux (1.0-8.0 A) December 14: B6.7
Radio Flux 10.7 cm at 14/2300 UTC (Penticton): 119
Solar Wind Speed at 15/1645 UTC: 464.3 km/s, density : 1.9 p/cm^3


Forecast:

Activity level will be: low - explanation
Event probabilities: Class C: 75%, Class M: 25%, Class X: 05%, Proton: 01%
X-ray background flux (1.0-8.0 A): in the range B5.0-B9.9
Radio Flux 10.7 cm: a fluctuation in the range 107-131

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