Solar activity forecast for the period July 18 - 19, 2017


Issued: 2017 July 17 17:15 UTC


Analysis from July 16/1700 UTC to July 17/1700 UTC:

Sunspot Regions on the Disk 17/1629 UTC (SDO Continuum): 2
The Largest Event: C2.3 from Region 2665 at 17/0328 UTC
X-ray background flux (1.0-8.0 A) July 16: B2.1
Radio Flux 10.7 cm at 16/2300 UTC (Penticton): 86
Solar Wind Speed at 17/1645 UTC: 504.9 km/s, Density: 0.7 p/cm^3


Forecast:
 
activity level will be low to moderate
Event probabilities: Class C: 60, Class M: 15, Class X: 01, Proton: 20
X-ray background flux (1.0-8.0 A): in the range B1.0 - B4.0
Radio Flux 10.7 cm: a fluctuation in the range 78 - 95

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