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 22

ACE observed the arrival of a transient, possibly related to the December
20 CME. At 14:25 UT on December 22 a gradual increase of the solar wind
speed started, going from 380 to about 460 km/s. Simultaneously, the
magnitude of the interplanetary magnetic field went from 18 to 26 nT. The
Bz component currently is positive with values around 15 nT. The
geomagnetic conditions currently are quiet to unsettled.

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Daily estimated sunspot number

Most recent alerts

2014 Dec 22 1547 UTC
ACE observed the arrival of a transient, possibly related to the December [more]

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