Issued: 2024 April 19 17:00 UTC


Analysis from April 18/1700 UTC to April 19/1700 UTC:

Sunspot Regions on the Disk 19/1353 UTC (SDO Continuum): 17
The Largest Event: M2.1 from region 3647 at 19/0453 UT
X-ray background flux (1.0-8.0 A) April 18: C4.3
Radio Flux 10.7 cm at 18/2300 UTC (Penticton): 219
Solar Wind Speed at 19/1645 UTC: 452.2 km/s, density : 1.5 p/cm^3


Forecast:

Activity level will be: moderate - explanation
Event probabilities: Class C: 99%, Class M: 70%, Class X: 45%, Proton: 20%
X-ray background flux (1.0-8.0 A): in the range C2.0-C5.0
Radio Flux 10.7 cm: a fluctuation in the range 190-220

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