Solar activity forecast for the period July 10 - July 11, 2025

Issued: 2025 July 09 17:00 UTC


Analysis from July 08/1700 UTC to July 09/1700 UTC:

Sunspot Regions on the Disk 09/1130 UTC (SDO Continuum): 7
The Largest Event: M1.3 from Region 4136 at 09/0425 UT
X-ray background flux (1.0-8.0 A) July 08: B8.4
Radio Flux 10.7 cm at 08/2300 UTC (Penticton): 116
Solar Wind Speed at 09/1645 UTC: 418 km/s, Density: 1.6 p/cm^3


Forecast:

activity level will be low to moderate
Event probabilities: Class C: 75, Class M: 45, Class X: 10, Proton: 05
X-ray background flux (1.0-8.0 A): in the range B8.5-C1.5
Radio Flux 10.7 cm: a fluctuation in the range 104

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