Solar activity forecast for the period June 23 - 24, 2017


Issued: 2017 June 22 17:15 UTC


Analysis from June 21/1700 UTC to June 22/1700 UTC:

Sunspot Regions on the Disk 22/1623 UTC (SDO Continuum): 2
The Largest Event: no X-ray event
X-ray background flux (1.0-8.0 A) June 21: A5.9
Radio Flux 10.7 cm at 21/2300 UTC (Penticton): 74
Solar Wind Speed at 22/1640 UTC: 341.6 km/s, Density: 4.2 p/cm^3


Forecast:
 
activity level will be very low to low
Event probabilities: Class C: 10, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A4.5 - A7.5
Radio Flux 10.7 cm: a fluctuation in the range 67 - 81

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