Solar activity forecast for the period August 13 - 14, 2017


Issued: 2017 August 12 17:15 UTC


Analysis from August 11/1700 UTC to August 12/1700 UTC:

Sunspot Regions on the Disk 12/1623 UTC (SDO Continuum): 1
The Largest Event: no X-ray event
X-ray background flux (1.0-8.0 A) August 11: A3.0
Radio Flux 10.7 cm at 11/2300 UTC (Penticton): 70
Solar Wind Speed at 12/1645 UTC: 552.7 km/s, Density: 0.3 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 - A5.5
Radio Flux 10.7 cm: a fluctuation in the range 66 - 75

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