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 Dec 21

The > 10 MeV proton flux as observed by GOES started rising gradually after
the C5.6 flare of 20:35 UT on December 20. A faster ascent is noted after
the M1.0 flare of 12:17 UT on December 21. There is a chance that the > 10
MeV proton flux exceeds the threshold level of 10 pfu within the next 24

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

2014 Dec 21 1044 UTC
A halo or partial-halo CME was detected with the following characteristics: [more]

2014 Dec 21 1608 UTC
The > 10 MeV proton flux as observed by GOES started rising gradually after [more]

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

Science Highlights

Dec 12, 2014: Cruise the sun-earth system with STAFF

Dec 03, 2014: Reversed sunspot groups

Nov 26, 2014: NOAA 2192: The sequel

Nov 15, 2014: ESWW11 - High Mass for space weather (NL-FR-EN)

Nov 13, 2014: How's SC24 doing?

click here for all the news items

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STCE seminars