Solar activity forecast for the period July 16 - 17, 2017


Issued: 2017 July 15 17:15 UTC


Analysis from July 14/1700 UTC to July 15/1700 UTC:

Sunspot Regions on the Disk 15/1623 UTC (SDO Continuum): 2
The Largest Event: C1.7 from Region 2665 at 15/0028 UTC
X-ray background flux (1.0-8.0 A) July 14: B5.6
Radio Flux 10.7 cm at 14/2300 UTC (Penticton): 92
Solar Wind Speed at 15/1645 UTC: 307.8 km/s, Density: 4.2 p/cm^3


Forecast:
 
activity level will be low to moderate
Event probabilities: Class C: 70, Class M: 20, Class X: 05, Proton: 99
X-ray background flux (1.0-8.0 A): in the range B1.5 - B5.0
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