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 2022-06-30

A partial halo CME was detected by LASCO/C2 chronograph at 04:12 UTC on June 30th. The event has no clear on disc signature and is determined to be back-sided. No impact is expected on Earth.

CACTus Halo 2022-06-30

A halo or partial-halo CME was detected with the following characteristics: t0 | dt0| pa | da | v | dv | minv| maxv| 2022-06-30T03:24:08.148 | 3.0 | 289 | 224 | 337 | 94 | 198 | 589 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: Quiet conditions
    (<50% C-class flares)
  • Protons: Quiet
  • Geomagnetic: Quiet
    (A<20 and K<4)
  • All quiet: False
  • Provisional SSN: 68

Solar Activity

URSIgram 2022-07-02

Solar flaring activity over the past 24 hours was at very low levels no significant flaring activity. There are three numbered sunspot regions on the visible disc and a few simple unnumbered ones in the south-eastern quadrant. NOAA 3040 (beta) is still the largest active region on the visible disc, but has remained stable and inactive. NOAA 3042 has decayed into plage. NOAA 3045 and the newly numbered active region NOAA 3046 have shown some decay and are now classified as magnetic type alpha. The X-ray flaring activity over the next 24 hours is expected to be at very low to low levels. No Earth-directed coronal mass ejections (CMEs) were detected in the available coronagraph imagery over the past 24 hours. 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 return to background levels, well below the 1000 pfu threshold and is expected to remain below the 1000 pfu threshold over the next 24 hours. The 24h electron fluence was at moderate levels and is expected to decrease towards nominal levels over the next 24 hours.

Solar Wind

URSIgram 2022-07-02

Over the past 24 hours the solar wind parameters (ACE and DSCOVR) registered the arrival of a slow ICME. This could be a late arrival of the slow partial halo CME related to the filament eruption in the south-western quadrant on June 26th. The arrival was preceded by a minor discontinuity around 09 UTC on July 1st, followed by increase in density, smooth rotation in the magnetic field around 23:30 UTC same day and the magnitude of the interplanetary magnetic field reaching almost 14 nT throughout July 2nd. The north-south Bz component registered expended period with negative values, reaching -13 nT early UTC this morning. The solar wind speed over the past 24 hours showed very mild fluctuations in the range of 316 km/s to 366 km/s. The solar wind parameters are expected to remain slightly elevated throughout the day and return to background slow solar wind conditions by tomorrow. A positive polarity coronal hole has crossed the central meridian and the related high speed stream could reach Earth on July 5th. The geomagnetic conditions over the past 24 hours registered a couple of active periods and an isolated minor storm in response to the ICME arrival. Mostly quiet to unsettled geomagnetic conditions are expected over the next 24 hours with possible isolated active periods under the waning influence of the ICME.





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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