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 16
12:18:21

Nine sunspot groups are reported on the Sun today. Four of them have
beta-gamma configuration of the photospheric magnetic field: Catania
numbers 23, 24, 25, and 26 (NOAA ARs 2034, 2035, 2036, and 2037,
respectively). These four groups produced numerous C-class flares during
the past 36 hours. None of the flares was associated with a CME. The
strongest flare of today is the C5.2 flare peaking at 08:44 UT in the
Catania sunspot group 24 (NOAA AR 2035). The solar soft X-ray background
flux is currently around the C1 level. We expect further flaring activity
on the C-level from these four sunspot groups, with a good chance for an
M-class event.
The Earth is currently inside a slow (around 320 km/s) solar wind flow with weak to average (3-4 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 16 1218 UTC
Nine sunspot groups are reported on the Sun today. Four of them have beta-gamma [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