Solar activity forecast for the period June 20 - 21, 2017


Issued: 2017 June 19 17:15 UTC


Analysis from June 18/1700 UTC to June 19/1700 UTC:

Sunspot Regions on the Disk 19/1623 UTC (SDO Continuum): 2
The Largest Event: B3.0 at 19/0429 UTC
X-ray background flux (1.0-8.0 A) June 18: A5.9
Radio Flux 10.7 cm at 18/2300 UTC (Penticton): 74
Solar Wind Speed at 19/1645 UTC: 443.8 km/s, Density: 1.6 p/cm^3


Forecast:
 
activity level will be very low to low
Event probabilities: Class C: 15, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A5.0 - A8.5
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