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.


Solar activity was low with NOAA region 2638 (Catania group 96) producing
two more C flares. The strongest a C1.3 flare peaking at 20:53UT.
The group evolved into a beta-gamma configuration while also some new small
spots are recorded elsewhere on the Solar disk (Catania groups 97 and 98).
Another C flare from NOAA region 2638 is quite possible but not expected.
A narrow CME directed to the North East is visible in SoHO/LASCO
coronagraph data from 23:53 after a datagap. It is possibly related to the
C flaring from  NOAA region 2638, but is anyway directed off the sun-Earth
Proton flux values are at background levels and expected to remain so.

Solar wind was enhanced under influence of the positive polarity coronal
hole high speed stream. Solar wind speed continued to increase and now
fluctuates around 620 km/s. Total magnetic field fluctuated around 11nT
until 4:00UT when it dropped to nominal values of around 5nT. Bz was
variable with peaks down to -10nT.
Solar wind conditions are expected to remain enhanced over the next 48
Geomagnetic conditions were quiet to active (local K Dourbes 2-4) with an
episode of minor storm conditions at planetary level (NOAA Kp 5 for the
0-3UT period).
Active geomagnetic conditions are possible over the next days under
influence of the high speed stream.

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

2017 Feb 02 1139 UTC
A partial halo CME is visible in SoHO/LASCO C2 images from 15:24 UT onwards [more]

2016 Nov 05 1349 UTC
A halo or partial-halo CME was detected with the following characteristics: [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]

Science Highlights

Feb 23, 2017: A stretched coronal hole

Feb 01, 2017: STCE Workshop

Jan 27, 2017: The Moon in sight

Jan 24, 2017: Low 10.7 cm radio flux

Jan 16, 2017: RoboSWOP in a space game EUFHORIA looking for sunspot treasures

click here for all science highlights


Oct 26, 2016: High-speed solar wind causes major geomagnetic storm (NL-FR-EN)

May 04, 2016: Mercury Transit

Mar 23, 2016: STCE 10 years - Happy Birthday!

Click here for all the press releases

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