Solar activity forecast for the period July 12 - July 13, 2026

Issued: 2026 July 11 17:00 UTC


Analysis from July 10/1700 UTC to July 11/1700 UTC:

Sunspot Regions on the Disk 11/1300 UTC (SDO Continuum): 5
The Largest Event: C1.1 from Region 4485 at 11/1327 UT
X-ray background flux (1.0-8.0 A) July 10: B7.1
Radio Flux 10.7 cm at 10/2300 UTC (Penticton): 113
Solar Wind Speed at 11/1645 UTC: 512.3 km/s, Density: 2 p/cm^3


Forecast:

activity level will be very low to low
Event probabilities: Class C: 85, Class M: 30, Class X: 01, 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 105-129

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