Solar activity forecast for the period April 10 - 11, 2017


Issued: 2017 April 9 17:15 UTC


Analysis from April 08/1700 UTC to April 09/1700 UTC:

Sunspot Regions on the Disk 09/1623 UTC (SDO Continuum): 1
The Largest Event: B4.9 at 08/1929 UTC
X-ray background flux (1.0-8.0 A) April 8: B1.0
Radio Flux 10.7 cm at 08/2300 UTC (Penticton): 73
Solar Wind Speed at 09/1645 UTC: 460.2 km/s, Density: 5.1 p/cm^3


Forecast:
 
activity level will be very low to low
Event probabilities: Class C: 20, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A7.0 - B2.0
Radio Flux 10.7 cm: a fluctuation in the range 63 - 83

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