Solar activity forecast for the period September 19 - September 20, 2019

Issued: 2019 September 18 17:00 UTC


Analysis from September 17/1700 UTC to September 18/1700 UTC:

Sunspot Regions on the Disk 18/1623 UTC (SDO Continuum): 0
The Largest Event: no X-ray event
X-ray background flux (1.0-8.0 A) September 17: A6.0
Radio Flux 10.7 cm at 17/2300 UTC (Penticton): 67
Solar Wind Speed at 18/1645 UTC: 397.5 km/s, Density: 3.7 p/cm^3


Forecast:

activity level will be very low
Event probabilities: Class C: 01, Class M: 01, Class X: 01, Proton: 01
X-ray background flux (1.0-8.0 A): in the range A5.8 - A6.2
Radio Flux 10.7 cm: a fluctuation in the range 67-69

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