Issued: 2025 January 18 17:00 UTC


Analysis from January 17/1700 UTC to January 18/1700 UTC:

Sunspot Regions on the Disk 18/1551 UTC (SDO Continuum): 8
The Largest Event: M2.1 from region 3964 at 17/1850 UT
X-ray background flux (1.0-8.0 A) January 17: C2.3
Radio Flux 10.7 cm at 17/2300 UTC (Penticton): 221
Solar Wind Speed at 18/1645 UTC: 486.1 km/s, density : 1.9 p/cm^3


Forecast:

Activity level will be: moderate - explanation
Event probabilities: Class C: 99%, Class M: 75%, Class X: 35%, Proton: 20%
X-ray background flux (1.0-8.0 A): in the range C1.8-C2.4
Radio Flux 10.7 cm: a fluctuation in the range 200-230

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