Solar activity forecast for the period August 12 - 13, 2017


Issued: 2017 August 11 17:15 UTC


Analysis from August 10/1700 UTC to August 11/1700 UTC:

Sunspot Regions on the Disk 11/1623 UTC (SDO Continuum): 1
The Largest Event: no X-ray event
X-ray background flux (1.0-8.0 A) August 10: A3.3
Radio Flux 10.7 cm at 10/2300 UTC (Penticton): 71
Solar Wind Speed at 11/1645 UTC: 430.2 km/s, Density: 5.1 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