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


Flaring activity has been very low, no C-class flares in past 24 h. Two
simple active regions on the visible disk, Catania 13 (no NOAA number) and
Catania 14 (NOAA 2570). No large flares expected (although C-class flares
are possible).

Unsettled geomagnetic conditions were registered in the past 24 h, due to
the vanishing effect of a high speed solar wind stream. Solar wind speed is
now at 480 km/s with interplanetary magnetic field magnitude of 5 nT. Quiet
to unsettled conditions are expected for the next 48 h.

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 Jul 25 0625 UTC
A shock-like feature was observed in the solar wind parameters on 23 July [more]

2016 Jul 24 0516 UTC
A class M5.5 solar X-ray flare occurred on 2016/07/23 with peak time 05:31UT [more]

2016 Jul 05 2210 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]

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

Science Highlights

Jul 26, 2016: A spectacular flare

Jul 19, 2016: Sunspot neighbours

Jul 12, 2016: SC24 highlights page

Jul 06, 2016: Backside eruptions

Jun 29, 2016: Impressive eruption

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