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

Issued: 2026 April 13 17:00 UTC


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

Sunspot Regions on the Disk 13/1345 UTC (SDO Continuum): 4
The Largest Event: C1.2 from Region 4414 at 13/1137 UT
X-ray background flux (1.0-8.0 A) April 12: B3.0
Radio Flux 10.7 cm at 12/2300 UTC (Penticton): 99
Solar Wind Speed at 13/1645 UTC: 436.1 km/s, Density: 1.1 p/cm^3


Forecast:

activity level will be very low to low
Event probabilities: Class C: 65, Class M: 15, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range B3.0 - B6.0
Radio Flux 10.7 cm: a fluctuation in the range 87-111

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