Solar activity forecast for the period July 11 - 12, 2017


Issued: 2017 July 10 17:15 UTC


Analysis from July 09/1700 UTC to July 10/1700 UTC:

Sunspot Regions on the Disk 10/1629 UTC (SDO Continuum): 1
The Largest Event: C1.5 at 10/0031 UTC
X-ray background flux (1.0-8.0 A) July 9: B2.1
Radio Flux 10.7 cm at 09/2300 UTC (Penticton): 92
Solar Wind Speed at 10/1555 UTC: 538.8 km/s, Density: 2.5 p/cm^3


Forecast:
 
activity level will be low to moderate
Event probabilities: Class C: 70, Class M: 20, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A9.5 - B3.0
Radio Flux 10.7 cm: a fluctuation in the range 85 - 98

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