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.
Jan 15, 2016 : Space Technology & Calibration Laboratories - at your service


The only C-class flare of the past 24 hours (the C1.0 flare peaking at
06:01 UT today) occurred in the NOAA H-alpha plage 2491 and was associated
with a filament eruption in its northern part. Although the current
SOHO/LASCO data is very scarce, this filament eruption seems to be
associated only with a narrow CME. We expect flaring activity on the
C-level in the coming hours, especially from the NOAA AR 2494 that has
beta-gamma configuration of its photospheric magnetic field. 
The solar wind speed is currently around 420 km/s. The interplanetary
magnetic field magnitude was elevated recently (up to 15 nT earlier this
morning; around 10 nT now). NOAA reported active geomagnetic conditions (Kp
= 4). Unsettled to active geomagnetic conditions are expected in the coming

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 Feb 06 0620 UTC
A partial halo CME was observed with first measurements in SOHO-LASCO/C2 [more]

2016 Jan 06 2254 UTC
A halo or partial-halo CME was detected with the following characteristics: [more]

2015 Oct 02 0048 UTC
A class M5.5 solar X-ray flare occurred on 2015/10/02 with peak time 00:13UT [more]

2015 Jun 02 0746 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]

Science Highlights

Feb 09, 2016: NOAA 2494's growth spurt

Feb 02, 2016: A filament erupts

Jan 27, 2016: Phoenix

Jan 19, 2016: The Polar Faculae are back!

Jan 12, 2016: The duration of solar flares

click here for all science highlights


Jan 15, 2016 : Space Technology & Calibration Laboratories - at your service

Dec 01, 2015 : Space Weather - Belgian wins an award

Nov 21, 2015 PV: Can the sun cause radar blackouts disrupting air traffic? - ESWW12

Click here for all the press releases

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ASGARD - Balloons for science : Project call