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.

FAST WARNING 'PRESTO' MESSAGE  from the SIDC (RWC-Belgium) 2014 Apr 15
12:51:58

Nine sunspot groups were reported by Catania today. Catania sunspot group
25 (NOAA AR 2036) was responsible for the most of the flaring activity
during the past 24 hours. The strongest flare of this period, however, was
produced by the Catania sunspot group 24 (NOAA AR 2035) that showed rapid
magnetic flux emergence in the past several hours: the C8.6 flare peaking
at 09:23 UT. We expect further flaring activity on the C-level from these
two active regions, with a good chance for an M-class event.
The Earth is currently inside a slow (around 350 km/s) solar wind flow with weak (2-3 nT) interplanetary magnetic field magnitude. The geomagnetic conditions are quiet and are expected to remain so.

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

Most recent alerts

2014 Apr 15 1251 UTC
Nine sunspot groups were reported by Catania today. Catania sunspot group [more]

2014 Apr 05 1842 UTC
The latest halo CME alert generated by the CACTus software package refers [more]

2013 Sep 25 1242 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]


Latest News

Apr 16, 2014: Saturday Morning Fever...

Apr 09, 2014: Small groups, big flares

Apr 02, 2014: Homologous flares

Mar 26, 2014: Waiting for the big one

Mar 20, 2014: Revolt of the filaments

click here for all the news items



Good to know

7th Solar Information Processing Workshop - Registration and abstract submission is OPEN, August 17-22, 2014

ESWW11, 17-21 November, 2014 - Abstract submission is OPEN

STCE Workshop - Long Term Solar Changes and their effect on Earth, May 19, 2014

STCE Workshop - Physical processes in solar-terrestrial plasmas, May 22 - 23, 2014

STCE Workshop - Modelling antennas & calibration of radio instruments, June 6, 2014

STCE 2014 annual meeting, June 12, 2014