Space Based Imaging

More data: SWAP, EUI

Ground Based Imaging

More: H-α, WL, Ca-IIK, Drawings

Ground Based Radio


Space Based Timelines

More data: LYRA, TSI

WDC Sunspot Index

More data: SILSO

Space Weather Services


Solar Map

Latest Alerts

Presto 2023-02-03

A partial halo CME was first seen at 00:48 UTC by LASCO C2, erupting towards the NE. This event is backsided and will not affect the Earth.


  • Flare: C-class flares
  • Protons: Quiet
  • Geomagnetic: Quiet
    (A<20 and K<4)
  • All quiet: False
  • Provisional SSN:

Solar Activity

URSIgram 2023-02-03

There are four active regions visible on the solar disc, all of them with simple alpha or beta magnetic field configuration. Solar flaring activity was at low levels over the past 24 hours, with several C-class flares detected. The strongest one was a C3.9 flare from a region behind the west limb, peaking at 02:49 UTC. Further C class flaring is expected. No Earth-directed coronal mass ejections (CMEs) were detected in the available coronagraph imagery over the past 24 hours. A partial halo CME was first seen at 00:48 UTC by LASCO C2, erupting towards the NE. This event is backsided and will not affect the Earth. The greater than 10 MeV proton flux was at nominal levels in the past 24 hours and is expected to remain so in the next 24 hours. The greater than 2 MeV electron flux has been below the 1000 pfu threshold and is expected to remain so. The 24h electron fluence was at normal levels and is expected to remain so over the next 24 hours. A positive polarity equatorial coronal hole is crossing central meridian, its associated high speed stream will arrive to the Earth in about 3 days.

Solar Wind

URSIgram 2023-02-03

The solar wind speed at L1 is at 350 km/s with an interplanetary magnetic field around 8 nT, with mostly negative polarity (oriented towards the Sun). Similar conditions can be expected for the next 24 hours. Geomagnetic conditions were quiet locally and unsettled at planetary levels (K_Dourbes up to 2 and Kp up to 3). Similar conditions expected for the next 24 hours.


The PROBA2 Science Center launches its 10th Guest Investigator call

The PROBA2 PI-team welcomes research proposals for the tenth round of its Guest Investigator program for research based on SWAP and LYRA data analysis by scientists outside the SWAP and LYRA PI-teams.

Solar snake spotted slithering across Sun’s surface

Solar Orbiter has spotted a ‘tube’ of cooler atmospheric gases snaking its way through the Sun’s magnetic field. The observation provides an intriguing new addition to the zoo of features revealed by the ESA-led Solar Orbiter mission, especially since the snake was a precursor to a much larger eruption.

Close-up of the Sun

The ESA-led Solar Orbiter mission has experienced its second close encounter with the Sun.  It is delivering more stunning data, and at higher resolution than ever before! 


Ground Observations

The SIDC monitors the level of solar activity from the photosphere to the corona with ground based instruments located in Uccle and Humain.

Read more

Space Instruments

To avoid the disturbing or blocking effect of the Earth atmosphere, EUV observations of the solar corona need to be made from space...

Read more

Space Weather & Climate

We monitor and forecast solar variability to provide information services  to society and industry about the influence of space weather and climate.

Read more

Data Processing & Distribution

Data processing is necessary to extract relevant information for research studies, whereas data distribution and visualization are part of ROB open data policy.

Read more


Modelling of Solar phenomena allows scientists to test theories and to predict Space Weather phenomena and their impact on Earth.

Read more


Supporting Research

The SIDC shares and expands its expertise through interaction with both upcoming and experienced researchers.

Read more