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 Sep 01
19:10:03

A full halo CME was detected by SOHO/LASCO today, first appearing in the
LASCO C2 field of view at 11:12 UT. STEREO B EUVI data show that this CME
was associated with a major (probably an X-class) flare in the active
region around N15E130, accompanied by large-scale dimmings and an EIT wave.
A type II solar radio burst was detected at Earth and by STEREO B, and a
solar energetic particle event was detected at STEREO B. This CME is a far
side event and will not be geoeffective. Spacecraft around Venus may detect
the proton event as well (there is currently no STEREO A data to confirm
this), but only the CME-driven shock (and not the CME itself) is expected
to arrive at Venus, probably on September 3. 

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Daily estimated sunspot number
EISN

Most recent alerts

2014 Sep 01 1911 UTC
A full halo CME was detected by SOHO/LASCO today, first appearing in the [more]

2014 Aug 29 1853 UTC
The latest halo CME alert, with first measurement of the CME on August [more]

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


Latest News

Aug 27, 2014: Small sunspot, big flare

Aug 13, 2014: Far-side blast targets STEREO-A

Aug 06, 2014: A filament always rings twice

Jul 31, 2014: Tour de France

Jul 07, 2014: Sunspot Summer Festival

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