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


Solar flaring activity is low, with only few B-class and no C-class flares
reported during last 24 hours.
The only two numbered sunspot groups presently observed on the visible side
of the solar disc are; decaying NOAA AR 2796, and NOAA AR 2797 which just
rotated from the behind of the East solar limb.
We expect a low level of flaring activity to persist in the coming hours.
However, the NOAA AR 2797 still could be the source of occasional B-class
and possibly, but not very probably also isolated C-class flare.
During last 24 hours no Earth directed CMEs were observed in coronagraph
data, and proton flux levels remained at background values.

Earth is still inside the slow solar wind with the speed of  around 280
km/s, and the interplanetary magnetic field magnitude is about 5 nT. 
The arrival of the fast solar wind originating from the high latitude
extension of the southern polar coronal hole can be expected later today or
tomorrow. It might be followed by the fast solar wind associated with the
low-latitude extension of the northern polar coronal hole (crossed the
central meridian early on January 16). 
The geomagnetic conditions are presently quiet. The expected arrival of the
fast solar wind can induce unsettled to possibly active geomagnetic
conditions in the coming hours.

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

2021 Jan 18 1227 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]

2021 Jan 11 1035 UTC
The in situ observations show the arrival of a slow shock wave registered [more]

2020 Dec 09 1019 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]