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.


Over the past 24 hours solar activity has been quiet. No significant flares
have been recorded. All Active Regions (AR) have shown low levels of
activity. No Earth directed Coronal Mass Ejections (CMEs) have been
detected. The greater than 10MeV proton flux remained at background levels
over the past 24 hours. Solar activity is expected to remain low over the
next 24 hours with a low probability of C-class flares.
The solar wind speed has been decreasing from around 450 to 330 km/s over
the past 24 hours, with a small increase this morning. The total magnetic
field strength has fluctuated around 5 nT. The Bz component has fluctuated
between positive and negative, between -5 and +5 nT. Geomagnetic conditions
ranged between Kp index 1-3 (NOAA) and local K index 1-3 (Dourbes) over the
past 24 hours. Geomagnetic conditions are expected to be quiet. Although it
is not expected, if solar wind speeds continue to increase we could
experience enhanced geomagnetic conditions as a consequence.

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 Nov 14 0946 UTC
The in situ observations (from DSCOVR satellite), show sudden increase [more]

2017 Nov 07 0756 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]

2017 Sep 17 1959 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]

Science Highlights

Nov 17, 2017: A New STAFF

Oct 19, 2017: Something's brewing...

Oct 16, 2017: The best of... 2016!

Oct 11, 2017: The Sun is spotless again!

Oct 04, 2017: A new LYRA product

click here for all science highlights


Nov 24, 2017: Fourteenth European Space Weather Week

Sep 28, 2017: Recurrent Coronal Hole

Aug 11, 2017: Eclipse fever

Click here for all the press releases

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