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 2022-06-29

A halo or partial-halo CME was detected with the following characteristics: t0 | dt0| pa | da | v | dv | minv| maxv| 2022-06-29T12:36:08.477 | 2.0 | 58 | 222 | 1136 | 376 | 727 | 1953 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: Quiet
    (A<20 and K<4)
  • All quiet: False
  • Provisional SSN: 38

Solar Activity

URSIgram 2022-06-29

Solar flaring activity over the past 24 hours has been at very low levels. There are five relatively simple active regions on the visible solar disc with NOAA 3040 (beta) being the largest. NOAA 3041 has reached the west limb and is expected to rotate behind it soon. NOAA 3042 (beta) is the second largest active region on the visible disc, but it remains a small and fairly simple bipolar region. Two other regions, NOAA 3043 (alpha) and NOAA 3044 (beta) have been newly numbered in the southeast quadrant, but appear to be decaying. A new sunspot group is emerging in the southeast quadrant. The X-ray flaring activity over the next 24 hours is expected to be at very low to low levels with chances for isolated C-class flaring. No Earth-directed coronal mass ejections (CMEs) were detected in the available coronagraph imagery over the past 24 hours. A large filament erupted on the central meridian close to the disc center around 22 UTC on June 28th. Any possible impacts of this eruption will be further analysed as more coronagraph data becomes available. 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 was mostly above the 1000 pfu threshold and is expected to remain so over the next 24 hours. The 24h electron fluence was at moderate levels and is expected to remain so over the next 24 hours.

Solar Wind

URSIgram 2022-06-29

Over the past 24 hours the solar wind parameters (ACE and DSCOVR) remained under the waning influence of a high speed stream. The solar wind velocity has been mostly stable around 500 km/s. The interplanetary magnetic field was weak with a maximal value of 6 nT and a minimum Bz of -4 nT. The B field has switched orientation from the negative to the positive sector. At the time of writing the forecast the interplanetary field has just increased to almost 10 nT, possibly reflecting the expected glancing blow arrival of the June 26th CME. The solar wind parameters are expected to be slightly elevated over the next 24 hours with the expected glancing blow arrival of the June 26th CME. The geomagnetic conditions over the past 24 hours were globally quiet to isolated and locally quiet to active with K Belgium reaching 4. Quiet to unsettled geomagnetic conditions are expected over the next 24 hours with chances for isolated active periods.





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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