Solar activity forecast for the period August 15 - 16, 2017


Issued: 2017 August 14 17:15 UTC


Analysis from August 13/1700 UTC to August 14/1700 UTC:

Sunspot Regions on the Disk 14/1629 UTC (SDO Continuum): 1
The Largest Event: C1.8 at 14/0213 UTC
                   C2.7 at 14/1046 UTC
                   C1.1 at 14/1624 UTC                   
X-ray background flux (1.0-8.0 A) August 13: A2.9
Radio Flux 10.7 cm at 13/2300 UTC (Penticton): 70
Solar Wind Speed at 14/1640 UTC: 435.6 km/s, Density: 1.1 p/cm^3


Forecast:
 
activity level will be very low to low
Event probabilities: Class C: 30, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A5.0 - B1.0
Radio Flux 10.7 cm: a fluctuation in the range 70 - 79

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