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 very 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 350 km/s with interplanetary magnetic fields of
5 nT. Geomagnetic conditions have been quiet to unsettled (K = 1 - 3) in
the past 24 h. A relatively long magnetic field with low variability
together with low temperature could have marked the arrival yesterday of
the March 12 CME. The effect of a high speed stream from a small equatorial
coronal hole, with positive magnetic field polarity, may reach the Earth in
about 24 h and cause up to active geomagnetic storm conditions (K = 4).

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

2019 Mar 14 1326 UTC
Coronagraph images show a faint and slow Eastward CME in the morning of [more]

2019 Mar 10 1159 UTC
END OF ALL QUIET ALERT ...................... The SIDC [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]