Solar activity forecast for the period February 19 - 20, 2017


Issued: 2017 February 18 17:30 UTC


Analysis from February 17/1700 UTC to February 18/1715 UTC:

Sunspot Regions on the Disk 18/1659 UTC (SDO Continuum): 2
The Largest Event: B3.1 at 18/0319 UTC
X-ray background flux (1.0-8.0 A) February 17: A7.6
Radio Flux 10.7 cm at 17/2300 UTC (Penticton): 74
Solar Wind Speed at 18/1700 UTC: 505.3 km/s, Density: 4.2 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 A6.5 - B1.0
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