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


Solar activity has been quiet over the past 24 hours. There are no
significant Active Regions on the solar disk. Flaring conditions are
expected to remain quiet with a very small chance of C-class flares.

No Earth directed Coronal Mass Ejection has been observed. The greater than
10 MeV solar protons flux remained at background levels over the past 24
hours and are expected to remain so.

The solar wind speed has fluctuated between 500 and 700 km/s over the past
24 hours. The total magnetic field strength has fluctuated between 5 to 10
nT. The Bz component was largely positive, fluctuating between -5 and +10
The elevated solar wind speeds are a consequence of a large Coronal Hole
(which reached the central meridian on December 04). The enhanced solar
wind conditions are expected to persist in the following days as long as
Earth remains under the influence of the solar wind associated with the
coronal hole.

Geomagnetic conditions ranged between Kp index 1-4 (NOAA) and local K index
1-4 (Dourbes) over the past 24 hours. The conditions are expected to remain
the same in response to the enhanced interplanetary magnetic field, short
periods of active conditions cannot be fully excluded, especially if there
is a prolonged period of southward directed Bz component.

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 Nov 28 1210 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]

2018 Nov 05 1320 UTC
Geomagnetic conditions have reached moderate storm levels on a planetary [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]