Solar activity forecast for the period August 11 - 12, 2017


Issued: 2017 August 10 17:15 UTC


Analysis from August 09/1700 UTC to August 10/1700 UTC:

Sunspot Regions on the Disk 10/1623 UTC (SDO Continuum): 1
The Largest Event: no X-ray event
X-ray background flux (1.0-8.0 A) August 9: A3.5
Radio Flux 10.7 cm at 09/2300 UTC (Penticton): 72
Solar Wind Speed at 10/1645 UTC: 396.6 km/s, Density: 0.8 p/cm^3


Forecast:
 
activity level will be very low
Event probabilities: Class C: 05, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A3.0 - A7.5
Radio Flux 10.7 cm: a fluctuation in the range 67 - 76

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