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


Solar activity was at very low levels. No significant flares have been
recorded. NOAA Active Region 2757 (N03E09) showed some sunspot growth and
continued flux emergence and produced A-flaring activity over the period
(GOES-16). Another active region with possible spot development has also
rotated over the eastern limb (S30E70).
A very slow and narrow Coronal Mass Ejection (CME) that may be Earth
directed was observed by STEREO-A at 17:54 Jan 25, possibly associated with
an extended A-flare at 15:00 from AR2757. There are currently no LASCO
observations for this time, however, due to the extremely slow speed it is
not expected to have a significant geomagnetic impact. Further analysis
will be carried out as the data becomes available. The greater than 10 MeV
proton flux was at nominal values. 
Solar activity is expected to remain at very low levels.

The solar wind speed was at background levels, ranging between 260 and 350
km/s (ACE). The total magnetic field fluctuated between 0 and 7 nT. Bz. The
interplanetary magnetic field (phi angle) was predominantly directed away
from the Sun (positive sector). 

Geomagnetic activity was quiet, with the Kp index (NOAA) and the local k
index (Dourbes) recording values of between 0 and 2. Quiet conditions are
expected on Jan 26-28.

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

2020 Jan 12 1232 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]

2019 Oct 25 0924 UTC
Geomagnetic conditions have reached moderate storm levels (NOAA Kp=6 for [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]