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. An A9.7 flare peaked at 04:24 UT and
was related to the eruption of the filament in former active region NOAA
2733 between 04 and 05 UT. This filament is reshaping itself and is
currently located near N10E00. Associated with this eruption was a narrow
and very slow moving (190 km/s) coronal mass ejection (CME) with a
potential earth-directed component (STEREO-A/COR2 imagery). A preliminary
estimate of the CME arrival near Earth is 26 February. The greater than 10
MeV proton flux was at nominal values.

Solar activity is expected to remain at very low levels.

Solar wind speed showed a generally declining trend from 340 km/s at the
beginning of the period to 300 km/s at the end (DSCOVR). Bz ranged between
-3 and +2 nT, with solar wind proton density gradually increasing to its
current 10/cm3. The interplanetary magnetic field was mainly directed
towards the Sun (negative sector). Geomagnetic activity was at quiet
Mostly quiet geomagnetic conditions are expected until the arrival of the
co-rotating interaction region and wind stream from the positive polarity
coronal hole later today or on 21 February. This may result in active
conditions, with a small chance on an isolated minor storming episode.

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 Feb 16 1225 UTC
START OF ALL QUIET ALERT ........................ The SIDC - RWC Belgium [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]