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.


Over the past 24 hours solar activity has been low. Flaring has been at the
B-class level. Active Region (AR) 2615 (Mcintosh class:Cso; Mag. type:Beta)
has been most active, producing all the B-class flares. However, The region
is now approaching the West solar limb and will soon pass off the solar
disk. AR 2615 has shown some evidence of flux emergence and cancellation in
HMI magnetogram observations, and is expected to continue producing flaring
activity. No Earth directed Coronal Mass Ejections (CMEs) have been
detected, but a large filament eruption occurred close to the East solar
limb, but is not expected to interact with the Earth system. Solar protons
have remained at background levels over the past 24 hours. Solar activity
is expected to remain low over the next 24 hours with a reasonable chance
of C-class flares and a low probability of M-class flares.
The solar wind speed has fluctuated between 330 and 600 km/s over the past
24 hours. The total magnetic field strength has fluctuated between 5 nT and
20 nT. The Bz component has fluctuated between -10 and +20 nT. Geomagnetic
conditions ranged between Kp index 2-4 (NOAA) and local K index 1-3
(Dourbes) over the past 24 hours, with the slightly enhanced values
occurring due to the negative Bz and high speed solar wind generated from a
large negative polarity Southern polar trans-equatorial coronal hole (CH).
This region will be creating enhanced solar wind conditions over the coming
days due to influences from the associated Co-Rotating-Interaction Region
(CIR) and the subsequent CH High Speed Stream (HSS). As a consequence
Geomagnetic conditions are expected to be quiet to unsettled for the next
few days.

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

2016 Nov 09 1027 UTC
A small shock in the solar wind was registered by DSCOVR at 5:43 UT on [more]

2016 Nov 05 1349 UTC
A halo or partial-halo CME was detected with the following characteristics: [more]

2016 Jul 24 0516 UTC
A class M5.5 solar X-ray flare occurred on 2016/07/23 with peak time 05:31UT [more]

2016 Jul 05 2210 UTC
END OF ALL QUIET ALERT ...................... The SIDC [more]

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