Solar activity forecast for the period May 17 - 18, 2017


Issued: 2017 May 16 17:15 UTC


Analysis from May 15/1700 UTC to May 16/1700 UTC:

Sunspot Regions on the Disk 16/1623 UTC (SDO Continuum): 2
The Largest Event: B2.2 at 16/0416 UTC
X-ray background flux (1.0-8.0 A) May 15: A3.9
Radio Flux 10.7 cm at 15/2300 UTC (Penticton): 70
Solar Wind Speed at 16/1645 UTC: 532.9 km/s, Density: 1.8 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 A3.0 - A6.5
Radio Flux 10.7 cm: a fluctuation in the range 63 - 77

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