Solar activity forecast for the period April 15 - April 16, 2026

Issued: 2026 April 14 17:00 UTC


Analysis from April 13/1700 UTC to April 14/1700 UTC:

Sunspot Regions on the Disk 14/1623 UTC (SDO Continuum): 4
The Largest Event: B9.4 from Region 4414 at 14/0534 UT
X-ray background flux (1.0-8.0 A) April 13: B3.1
Radio Flux 10.7 cm at 13/2300 UTC (Penticton): 100
Solar Wind Speed at 14/1645 UTC: 374.6 km/s, Density: 2.7 p/cm^3


Forecast:

activity level will be low
Event probabilities: Class C: 60, Class M: 15, Class X: 05, Proton: 01
X-ray background flux (1.0-8.0 A): in the range B2.7 - B3.2
Radio Flux 10.7 cm: a fluctuation in the range 98-102

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