Welcome to the Solar Influences Data Analysis Center (SIDC), which is the solar physics research department of the Royal Observatory of Belgium. The SIDC includes the World Data Center for the sunspot index and the ISES Regional Warning Center Brussels for space weather forecasting.

STCE annual meeting - 10y celebration & roof top tour, June 9


Solar activity is very low with no C-class or even B-class flares reported
during last 24 hours. There are no active regions observed on the visible
side of solar disc.
We expect solar activity to remain low with possibly only occasional
B-class flare. No Earth directed CMEs were observed in the last 24 hours.

The solar wind speed is about 350 km/s, and the interplanetary magnetic
field magnitude is about 5 nT. The fast solar wind associated with the
elongated equatorial coronal hole (between N10 to S25), which has crossed
central meridian yesterday morning might arrive at the Earth in the morning
of July 2 and induce unsettled to 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

2016 Jun 27 1202 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]

2016 Jun 17 0753 UTC
A partial halo CME can be seen in SoHO/LASCO C2 images from around 8:00UT [more]

2016 May 16 0149 UTC
A halo or partial-halo CME was detected with the following characteristics: [more]

2016 Apr 18 0110 UTC
A class M6.7 solar X-ray flare occurred on 2016/04/18 with peak time 00:29UT [more]

Science Highlights

Jun 29, 2016: Impressive eruption

Jun 21, 2016: A long duration geomagnetic storm

Jun 10, 2016: Spotless days

May 30, 2016: Quiet week, lovely events

May 19, 2016: An early application...

click here for all science highlights


May 04, 2016: Mercury Transit (NL-FR-EN)

Mar 23, 2016: STCE 10 years - Happy Birthday (NL-FR-EN)

Jan 15, 2016: Space Technology & Calibration Laboratories

Click here for all the press releases

Good to know

STCE Annual meeting

European Space Weather Week

STCE annual meeting