The SIDC is part of the Royal Observatory of Belgium and a partner in the Solar Terrestrial Center of Excellence (STCE).


There are no active regions visible on the solar disk. No C-class flares in
past 24 h. Solar activity is expected to remain at low levels.

No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar
protons have remained at background levels over the past 24 hours.

The solar wind speed is at 320 km/s with interplanetary magnetic fields of
3 nT. Geomagnetic conditions have been quiet. The fast solar wind
associated with the low latitudinal extension of the northern polar coronal
hole (positive polarity) may arrive to the Earth within 24 h, causing
active geomagnetic conditions. Nevertheless, due to its latitude, the high
speed stream may pass north of the Earth and leave it unaffected (quiet
conditions expected in that case).

Latest SWAP image

SWAP latest image

Latest USET H-alpha image
USET latest Halpha image

Latest LYRA curve

Latest LYRA Curves

Latest Callisto Observations

Latest HUMAIN Callisto qkl

Daily estimated sunspot number

Most recent alerts

2018 Oct 16 0922 UTC
START OF ALL QUIET ALERT ........................ The SIDC - RWC Belgium [more]

2018 Oct 07 1127 UTC
The compression region in front of the fast solar wind stream expected [more]

2018 May 04 1644 UTC
A halo or partial-halo CME was detected with the following characteristics: [more]

2017 Sep 10 1650 UTC
A class X8.9 solar X-ray flare occurred on 2017/09/10 with peak time 16:06UT [more]