Solar activity forecast for the period February 12 - 13, 2017


Issued: 2017 February 11 18:30 UTC


Analysis from February 10/1700 UTC to February 11/1815 UTC:

Sunspot Regions on the Disk 11/1753 UTC (SDO Continuum): 1
The Largest Event: no X-ray event
X-ray background flux (1.0-8.0 A) February 10: A5.9
Radio Flux 10.7 cm at 10/2300 UTC (Penticton): 74
Solar Wind Speed at 11/1800 UTC: 369.5 km/s, Density: 2.0 p/cm^3


Forecast:
 
activity level will be very low to low
Event probabilities: Class C: 15, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A5.0 - A8.5
Radio Flux 10.7 cm: a fluctuation in the range 70 - 78

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