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

Flaremail 2022-10-02

A class M8.7 solar X-ray flare occurred on 2022/10/02 with peak time 02:21UT

CACTus Halo 2022-09-29

A halo or partial-halo CME was detected with the following characteristics: t0 | dt0| pa | da | v | dv | minv| maxv| 2022-09-24T09:48:07.449 | 2.0 | 46 | 314 | 1488 | 318 | 710 | 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: Moderate
    (ISES: Major) magstorm
    (A>=50 or K=6)
  • All quiet: False
  • Provisional SSN: 86

Solar Activity

URSIgram 2022-10-01

Solar flaring activity was at moderate levels. The largest flares observed were an impulsive M2 flare and followed by an M1 flare, from newly numbered NOAA AR 3112 near the north-east limb, peaking on September 30 at 16:11 UT and 17:35 UT, respectively. This region was responsible for most of the flaring activity. A number of C-class flares were produced by Catania group 47 (NOAA AR 3107), Catania group 48 (NOAA AR 3110) and Catania group 50 (NOAA AR 3111). Catania group 42 (NOAA AR 3105) has decayed and is about to rotate off the solar disk. Two new regions have emerged, one behind existing region Catania group 48, that has been numbers as NOAA AR 3113 and one in the south east, that is as yet unnumbered. Solar flaring activity is expected to be at low levels, with C-class flares expected, M-class flares probable and a chance for an X-class flare, particularly from NOAA AR 3112. No Earth directed Coronal Mass Ejections (CMEs) were detected in the available coronagraph imagery. In the past 24 hours the greater than 10 MeV proton flux was below the minor storm warning threshold. The greater than 10 MeV proton flux is expected to remain below the radiation storm threshold over the next 24 hours. The greater than 2 MeV electron flux was below the 1000 pfu threshold. The 24h electron fluence was at normal levels over the past 24 hours. The 24h electron fluence is expected to be at normal levels in the next 24 hours.

Solar Wind

URSIgram 2022-10-01

The Earth was under the continued influence of a high speed stream, with solar wind values between 500 and 570 km/s. The interplanetary magnetic field magnitude decreased gradually from 10nT to 6nT. The magnetic field phi angle was in the positive sector (field directed away from the Sun). The solar wind speed is expected to remain enhanced in response to a possible CME glancing blow on October 01 and the ongoing influence of the high speed stream. Geomagnetic conditions were quiet to unsettled (NOAA Kp 0-3, local K-Dourbes 0-3). Geomagnetic condition are expected to be at unsettled to minor storm conditions for the next days, with moderate storm conditions possible on Oct 1 and 2.





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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