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


Solar activity is low with only few B-class flares reported during last 24
Since there are presently no active regions observed on the visible side of
the solar disc, we expect that even number of B-class flares will decrease
in the coming hours. There were no Earth directed CMEs reported during last
24 hours and the solar protons remained at the background level.

The solar wind speed is presently about 350 km/s and the interplanetary
magnetic field magnitude is 7 nT.  
The fast solar wind associated with the negative polarity equatorial
coronal hole (seemingly connected to the southern polar coronal hole),
which reached central meridian yesterday afternoon, is expected at the
Earth in the morning of  March 29.
The geomagnetic conditions are presently quiet and we expect quiet to
unsettled conditions in the coming hours. The arrival of the fast solar
wind, associated with the negative polarity equatorial coronal hole that is
expected later today, might induce unsettled to possibly but not very
probably, active geomagnetic conditions.

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 24 2127 UTC
A shock in the solar wind is visible in DSCOVR data at 20:43 UT, most likely [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]