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 2022-10-02

A class X1 solar X-ray flare occurred on 02 October 2022 with peak time 20:25UT. The region of origin was active region NOAA AR 3110 in the north-west of the solar disk, there was also a possibly associated Type II radio burst recorded at 20:24 UT.

Flaremail 2022-10-02

A class X1.0 solar X-ray flare occurred on 2022/10/02 with peak time 20:25UT


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

Solar Activity

URSIgram 2022-10-04

Solar flaring activity was at high levels. Catania sunspot group 48 (NOAA AR 3110, beta) and very magnetically complex sunspot NOAA AR 3112 (beta-gamma-delta magnetic complexity) remained active and produced several M-class flares. The largest and latest one was a M1.7-class flare produced by NOAA AR 3110 at 21:22 UTC peak time on October 02. The other sunspots group on the disc facing Earth were not showing any flaring activity. Since the latest M1.7-class flare, the full disc flaring activity seems to have slightly decreased to C-class flaring levels of activity. The solar flaring activity is expected to remain high with possible M-class flares and also slight chance for an X-class flare. No coronal mass ejection observed in the coronographic images has been identified to be Earth directed. 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 days. The greater than 2 MeV electron flux was below the 1000 pfu threshold and it is expected to be below the threshold in the next 24 hours. The 24h electron fluence was at moderate levels and is expected to be at nominal levels in the next 24 hours.

Solar Wind

URSIgram 2022-10-04

The Earth continued to be under influence of a high-speed stream coming from coronal holes (positive polarity), with solar wind values between 440 km/s and 570 km/s. The interplanetary magnetic field magnitude was elevated around 10-16 nT. Then it slowly decreased the current values 5.5-8.8 nT. The southward component of the interplanetary magnetic field fluctuated between -13 nT and 12 nT. The magnetic field phi angle was mostly in the positive sector (field directed away from the Sun). So far there was no indication of the possible glancing blow arrival of the Interplanetary Coronal Mass Ejection associated with the filament eruption that began to lift off around 11:59 UTC October 01. The solar wind speed is expected to remain enhanced due to the ongoing influence of the high-speed stream combined with possible glancing blow of Interplanetary Coronal Mass Ejection. Geomagnetic conditions were unsettled to active (NOAA Kp 2-4, local K-Dourbes 2-4) with some periods for which storm conditions were observed (NOAA Kp 5, local K-Dourbes 5). Geomagnetic conditions are expected to be at unsettled conditions with possible periods of active conditions for the next days.





Come to ROB to study EUV brightenings with EUI

The Royal Observatory of Belgium hires a full-time scientific collaborator, who will play a central role in ROB’s research on campfires.

Congratulations, Dr Talpeanu!

On 20 June, 2022 Dana-Camelia Talpeanu successfully defended her PhD thesis ‘Numerical and Observational Study of Stealth and Consecutive Coronal Mass Ejections’. Her work was a joint project between the SIDC and the KU Leuven.

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.


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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