Solar activity forecast for the period April 8 - 9, 2017


Issued: 2017 April 7 17:15 UTC


Analysis from April 06/1700 UTC to April 07/1700 UTC:

Sunspot Regions on the Disk 07/1623 UTC (SDO Continuum): 2
The Largest Event: C2.7 from Region 2645 at 07/0025 UTC
X-ray background flux (1.0-8.0 A) April 6: B1.6
Radio Flux 10.7 cm at 06/2300 UTC (Penticton): 86
Solar Wind Speed at 07/1645 UTC: 412.4 km/s, Density: 3.2 p/cm^3


Forecast:
 
activity level will be very low to low
Event probabilities: Class C: 25, 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 76 - 96

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