Solar activity forecast for the period May 27 - 28, 2017


Issued: 2017 May 26 17:15 UTC


Analysis from May 25/1700 UTC to May 26/1700 UTC:

Sunspot Regions on the Disk 26/1623 UTC (SDO Continuum): 1
The Largest Event: B5.0 at 25/2117 UTC
X-ray background flux (1.0-8.0 A) May 25: A8.7
Radio Flux 10.7 cm at 25/2300 UTC (Penticton): 77
Solar Wind Speed at 26/1645 UTC: 321.7 km/s, Density: 1.2 p/cm^3


Forecast:
 
activity level will be very low to low
Event probabilities: Class C: 40, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A7.5 - B1.5
Radio Flux 10.7 cm: a fluctuation in the range 70 - 84

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