Solar activity forecast for the period June 19 - 20, 2017


Issued: 2017 June 18 17:15 UTC


Analysis from June 17/1700 UTC to June 18/1700 UTC:

Sunspot Regions on the Disk 18/1623 UTC (SDO Continuum): 2
The Largest Event: B2.9 at 18/1344 UTC
X-ray background flux (1.0-8.0 A) June 17: A5.6
Radio Flux 10.7 cm at 17/2300 UTC (Penticton): 75
Solar Wind Speed at 18/1640 UTC: 542.4 km/s, Density: 1.4 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 A5.0 - A8.5
Radio Flux 10.7 cm: a fluctuation in the range 70 - 80

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