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 2022-06-27

A partial halo coronal mass ejection (CME) was observed in LASCO C2 data to lift off the solar surface around 03:24 UTC on June 26th with an average plane of sky velocity of around 680 km/s. The CME is related to an on disc filament eruption in the south-west quadrant and the bulk of it is expected to miss the Earth with a minor chance for a weak glancing blow arrival on June 29th.

CACTus Halo 2022-06-26

A halo or partial-halo CME was detected with the following characteristics: t0 | dt0| pa | da | v | dv | minv| maxv| 2022-06-26T03:24:07.438 | 2.0 | 202 | 182 | 743 | 130 | 395 | 1008 t0: onset time, earliest indication of liftoff dt0: duration of liftoff (hours) pa: principal angle, counterclockwise from North (degrees) da: angular width of the CME (degrees), v: median velocity (km/s) dv: variation (1 sigma) of velocity over the width of the CME mindv: lowest velocity detected within the CME maxdv: highest velocity detected within the CME


  • Flare: C-class flares
    (probability >=50%)
  • Protons: Quiet
  • Geomagnetic: Active conditions
    (A>=20 or K=4)
  • All quiet: False
  • Provisional SSN: 56

Solar Activity

URSIgram 2022-06-26

The solar flaring activity was at low levels over the past 24 hours with only very few small C-class flares from several sunspots groups visible on the disc seen from Earth. We expect a very low flaring activity with a small chance of isolated C-class flares. No clear Earth-directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph images over the past 24 hours. However, a halo CME was detected by Cactus tool (the software package for 'Computer Aided CME Tracking') on June 26, at 03:30 UTC. Its main direction was South-West. No clear signature on disc could be associated to this CME, this indicate that the CME may well be backward. However, a confirmation is needed when data comes in. The greater than 10 MeV proton flux was at nominal levels over the past 24 hours and is expected to remain so for the next 24 hours. The greater than 2 MeV electron flux was below 1000 pfu alert threshold and it is expected to remain so during the next 24 hours. The electron fluence was at normal to moderate levels and is expected to remain normal to moderated levels in the next 24 hours.

Solar Wind

URSIgram 2022-06-26

The solar wind parameters in Earth environment was enhanced with the expected arrival of the fast solar wind coming from coronal holes (negative polarity): the wind speed increased from 400 km/s up to 655 km/s. The interplanetary magnetic field magnitude reached values around 13 nT. The Bz component of the interplanetary magnetic field fluctuated between 12.0 nT and 8.7 nT being predominately negative. The solar wind conditions is expected to remain enhanced as long as Earth remain under the influence of the high-speed streams from coronal holes. The geomagnetic conditions were active (NOAA Kp 4) in response of the arrival of the high-speed streams and the prolonged negative values of the Bz component of the interplanetary magnetic field. The geomagnetic conditions are expected to be unsettle with possible periods of active conditions.





First Solar Orbiter/EUI Guest Investigator Call is now open

The EUI PI team welcomes research proposals for the first round of its Guest Investigator Program for research based on EUI and Solar Orbiter data analysis by scientists outside the EUI PI team.

ROB/SIDC has successfully passed the Flight Acceptance Review of its Science Operations Centre for PROBA-3/ASPIICS

A committee consisting of experts in software development, space mission operations, and science was appointed by ESA to follow the SOC development and to review it at regular intervals. The Flight Acceptance Review was the last in the series of reviews. It had to certify that the SOC is built following the pre-defined scientific and technical requirements. The committee has thoroughly inspected the SOC software and associated documentation. In April 2022, it concluded that the SOC satisfies all the requirements and the Flight Acceptance Review of the ASPIICS SOC is successfully closed.

The EUI telescope causes a revolution in solar physics

On March 26, 2022, the Solar Orbiter satellite came closer to the Sun than ever before. A particularly exciting moment. The images of this closest approach -the perihelion-, taken by the Extreme Ultraviolet Imager (EUI) on board are will revolutionize solar physics!


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.

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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...

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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.

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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.

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

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Supporting Research

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

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