Issued: 2025 July 19 17:00 UTC


Analysis from July 18/1700 UTC to July 19/1700 UTC:

Sunspot Regions on the Disk 19/1530 UTC (SDO Continuum): 10
The Largest Event: C3.3 from region 4135 at 19/0907 UT
X-ray background flux (1.0-8.0 A) July 18: B9.3
Radio Flux 10.7 cm at 18/2300 UTC (Penticton): 156
Solar Wind Speed at 19/1645 UTC: 457.5 km/s, density : 0.1 p/cm^3


Forecast:

Activity level will be: low - explanation
Event probabilities: Class C: 99%, Class M: 35%, Class X: 15%, Proton: 05%
X-ray background flux (1.0-8.0 A): in the range B9.5-C1.5
Radio Flux 10.7 cm: a fluctuation in the range 144-168

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