Solar activity forecast for the period June 24 - June 25, 2021

Issued: 2021 June 23 17:00 UTC


Analysis from June 22/1700 UTC to June 23/1700 UTC:

Sunspot Regions on the Disk 22/1623 UTC (SDO Continuum): 2
The Largest Event: C3.4 from Region  at 23/0707 UT
X-ray background flux (1.0-8.0 A) June 22: B1.0
Radio Flux 10.7 cm at 22/2300 UTC (Penticton): 78
Solar Wind Speed at 23/1645 UTC: 356.3 km/s, Density: 2.8 p/cm^3


Forecast:

activity level will be very low to low
Event probabilities: Class C: 20, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A9.5 - B1.8
Radio Flux 10.7 cm: a fluctuation in the range 78-79

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