Solar activity forecast for the period April 7 - 8, 2017


Issued: 2017 April 6 17:15 UTC


Analysis from April 05/1700 UTC to April 06/1700 UTC:

Sunspot Regions on the Disk 06/1623 UTC (SDO Continuum): 2
The Largest Event: C5.5 from Region 2645 at 06/1210 UTC
X-ray background flux (1.0-8.0 A) April 5: B2.7
Radio Flux 10.7 cm at 05/2300 UTC (Penticton): 83
Solar Wind Speed at 06/1645 UTC: 454.6 km/s, Density: 2.5 p/cm^3


Forecast:
 
activity level will be very low to low
Event probabilities: Class C: 30, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A9.5 - B4.0
Radio Flux 10.7 cm: a fluctuation in the range 73 - 93

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