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


Issued: 2017 August 16 17:15 UTC


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

Sunspot Regions on the Disk 16/1641 UTC (SDO Continuum): 1
The Largest Event: B5.2 at 16/0838 UTC
X-ray background flux (1.0-8.0 A) August 15: B1.0
Radio Flux 10.7 cm at 15/2300 UTC (Penticton): 75
Solar Wind Speed at 16/1640 UTC: 391.7 km/s, Density: 7.8 p/cm^3


Forecast:
 
activity level will be very low to low
Event probabilities: Class C: 45, Class M: 05, 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 71 - 81

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