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.
Press release - May 06, 2015: Extreme flaring activity (NL-FR-EN)


Solar activity was low and is expected to remain so in the coming 24 hours.
NOAA AR 2349 and NOAA AR 2353 retain the possibility for C-class flaring.
The evolution of a newly emerging, dynamic but small, active region near
the solar East limb has to be followed up.
Geomagnetic activity has been quiet and is expected to remains so in the
coming 24 hours. A sector boundary crossing of the interplanetary magnetic
field was observed yesterday May 23 around 17:30. No CME arrival is
expected in the coming days. A small coronal hole is approaching the solar
disc center and could eventually result in enhanced geomagnetic activity
from May 28 onwards.

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

2015 May 22 0149 UTC
A halo or partial-halo CME was detected with the following characteristics: [more]

2015 May 22 0536 UTC
CACTus detected a halo CME yesterday May 21 22:24. Given the absence of [more]

2015 May 05 2246 UTC
A class X2.7 solar X-ray flare occurred on 2015/05/05 with peak time 22:11UT [more]

2014 Aug 08 1211 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]

Science Highlights

May 20, 2015: Twisted beauties

May 06, 2015: A stethoscope for the Sun

Apr 30, 2015: The wall

Apr 15, 2015: NOAA 2321: one, two or three groups?

Apr 09, 2015: Impressive filament eruption

click here for all science highlights


May 06, 2015: Extreme flaring activity (NL-FR-EN)

Mar 20, 2015: Solar Eclipse

Mar 11, 2015: Extreme flaring activity (NL-FR-EN)

Click here for all the press releases

Good to know

Natural Hazards for Aviation Workshop - June 2 2015

ESWW12 - November 23-27, 2015 - Abstract submission!

Mark the date: 11 June 2015 - STCE annual meeting