Solar activity forecast for the period May 18 - 19, 2017


Issued: 2017 May 17 17:15 UTC


Analysis from May 16/1700 UTC to May 17/1700 UTC:

Sunspot Regions on the Disk 17/1623 UTC (SDO Continuum): 2
The Largest Event: B1.2 at 16/1809 UTC
X-ray background flux (1.0-8.0 A) May 16: A4.2
Radio Flux 10.7 cm at 16/2300 UTC (Penticton): 71
Solar Wind Speed at 17/1645 UTC: 486.7 km/s, Density: 4.1 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 A3.5 - A7.0
Radio Flux 10.7 cm: a fluctuation in the range 64 - 78

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