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 20

While the halo CME of December 17 is expected to arrive around 15h UT on
December 20, the halo CME of December 19 is expected to arrive around 23h
UT on December 20. A new CME was first observed by LASCO C3 at 9:18 UT on
December 20, after a data gap. It is probably associated to the X1.8 flare
which peaked at 00:27 UT on December 20. There is a chance for a glancing
blow from this CME with estimated arrival time around 6h UT on December 22.
In view of the expected arrival of these CMEs, active to minor storm
geomagnetic levels (K Dourbes < 6) are likely on December 20, 21 and 22,
with a chance for major storm periods (K Dourbes = 6).

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Daily estimated sunspot number

Most recent alerts

2014 Dec 20 1253 UTC
While the halo CME of December 17 is expected to arrive around 15h UT on [more]

2014 Dec 14 1649 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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