Solar activity forecast for the period April 14 - 15, 2017


Issued: 2017 April 13 17:15 UTC


Analysis from April 12/1700 UTC to April 13/1700 UTC:

Sunspot Regions on the Disk 13/1623 UTC (SDO Continuum): 2
The Largest Event: no X-ray event
X-ray background flux (1.0-8.0 A) April 12: A4.7
Radio Flux 10.7 cm at 12/2300 UTC (Penticton): 72
Solar Wind Speed at 13/1644 UTC: 389.0 km/s, Density: 3.6 p/cm^3


Forecast:
 
activity level will be very low to low
Event probabilities: Class C: 10, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A4.0 - A8.5
Radio Flux 10.7 cm: a fluctuation in the range 67 - 77

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