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.


There are two active regions on the disc, NOAA AR 2706 and 2707. No C-class
flares in past 24 h, NOAA AR 2706 has a beta magnetic field configuration
and is capable of C-class flaring.

No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar
protons have remained at background levels over the past 24 hours.

The solar wind speed at L1 is at 390 km /s with interplanetary magnetic
field magnitude of 4 nT. Geomagnetic conditions are quiet and expected to
remain so for the next 48h. By then, the fast solar wind related to the
southern extension of the northern polar coronal hole can affect the Earth
and cause active geomagnetic conditions  (although it may pass north of the

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

2018 Apr 20 1041 UTC
Long intervals of negative values of Bz component of the interplanetary [more]

2018 Apr 17 1201 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]

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