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.

Solar Eclipse, March 20, 2015


No C-class or even B-class flares were reported during in the past 24
hours. Four sunspot groups reported today have rather simple configurations
of the photospheric magnetic field. Unless active regions behind the east
limb become flare-productive, a C-class flare is unlikely, although still
The Earth is currently inside the trailing part of the ICME driving the
shock wave that arrived at the Earth yesterday morning. The interplanetary
magnetic field inside the ICME reached 18 nT, but due to its predominantly
northward direction the geomagnetic conditions remained on the quiet to
unsettled level. The ICME speed is low (up to 450 km/s), so we expect quiet
geomagnetic conditions in the coming hours. The solar source of the ICME is
not clear. Late on April 2 we expect the arrival of a fast flow from a
trans-equatorial coronal hole that reached the solar central meridian late
on March 30, possibly resulting in a geomagnetic disturbance up to the
minor storm level (K = 5). 

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

2015 Mar 31 1954 UTC
A halo or partial-halo CME was detected with the following characteristics: [more]

2015 Mar 31 0922 UTC
A shock-like signature was observed in the solar wind data from ACE and [more]

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

Science Highlights

Mar 26, 2015: NOAA 2297 targets Earth

Mar 12, 2015: Marvellous M-flares

Mar 11, 2015: Press Release Extreme Space Weather: NOAA 2297 produces strong X2 flare (NL-FR-EN)

Mar 05, 2015: A gorgeous filament eruption

Feb 25, 2015: An icy visitor from outer space

click here for all the news items

Good to know

ESWW12 - November 23-27, 2015

Six years of SOLAR/SOLSPEC mission on ISS