Solar activity forecast for the period July 17 - 18, 2017


Issued: 2017 July 16 17:15 UTC


Analysis from July 15/1700 UTC to July 16/1700 UTC:

Sunspot Regions on the Disk 16/1629 UTC (SDO Continuum): 2
The Largest Event: C5.8 from Region 2665 at 15/1936 UTC
X-ray background flux (1.0-8.0 A) July 15: B1.9
Radio Flux 10.7 cm at 15/2300 UTC (Penticton): 91
Solar Wind Speed at 16/1645 UTC: 500.6 km/s, Density: 0.7 p/cm^3


Forecast:
 
activity level will be low to moderate
Event probabilities: Class C: 70, Class M: 20, Class X: 05, Proton: 55
X-ray background flux (1.0-8.0 A): in the range B1.0 - B3.5
Radio Flux 10.7 cm: a fluctuation in the range 88 - 100

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