Solar activity forecast for the period August 14 - August 15, 2026

Issued: 2026 August 13 17:00 UTC


Analysis from August 12/1700 UTC to August 13/1700 UTC:

Sunspot Regions on the Disk 13/1345 UTC (SDO Continuum): 7
The Largest Event: B7.4 from Region S10E88 at 13/0224 UT
X-ray background flux (1.0-8.0 A) August 12: B4.7
Radio Flux 10.7 cm at 12/2300 UTC (Penticton): 101
Solar Wind Speed at 13/1623 UTC: 376.9 km/s, Density: 1.9 p/cm^3


Forecast:

activity level will be very low to low
Event probabilities: Class C: 65, Class M: 05, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range B4.0-B8.0
Radio Flux 10.7 cm: a fluctuation in the range 89-113

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