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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


No alerts since: 2023-06-02


  • Flare: C-class flares
  • Protons: Quiet
  • Geomagnetic: Quiet
    (A<20 and K<4)
  • All quiet: False
  • Provisional SSN: 183

Solar Activity

URSIgram 2023-06-06

The solar flaring activity was at low levels with several C-class flares being detected in the last 24 hours. The largest flare was a C6.3 flare, peaking at 09:14 UTC on June 06, associated with NOAA AR 3327 (beta class). This region was the main driver of the flaring activity over the past 24 hours. Isolated C-class flaring was produced by NOAA AR 3315 and NOAA AR 3317 from behind the west limb. NOAA AR 3323 (beta-gamma class) remains the largest and most complex active region on the visible solar disc but remained quiet. NOAA AR 3327 (beta class) is the second largest region on the visible disc. It has developed more trailing spots and enlarged its area, but has been silent. Other regions on the disc have simple configuration of their photospheric magnetic field (alpha and beta) and did not show any significant flaring activity. The solar flaring activity is expected to remain at low levels, with C-class flares likely and a chance for M-class flares. No Earth-directed coronal mass ejections (CMEs) were detected in the available coronagraph imagery. Over the past 24 hours the greater than 10 MeV GOES proton flux was at nominal levels and is expected to remain so over the next days. The greater than 2 MeV electron flux was below the 1000 pfu threshold and is expected to remain below this threshold for the next days.The 24h electron fluence was at normal level. The electron fluence is expected to be at normal levels in the next days.

Solar Wind

URSIgram 2023-06-06

The geomagnetic conditions over the past 24 hours were quiet to unsettled. Similar quiet to unsettled conditions are expected for the next days. Active conditions may be possible from late on June 7th - early on June 8th due to a possible glancing blow ICME passage. Over the past 24 hours the solar wind parameters (ACE and DSCOVR) were slightly elevated. The solar wind speed values ranged between 350 km/s and 420 km/s. The total interplanetary magnetic decreased from 10 nT to the values around 4 nT. The southward component of the interplanetary magnetic field fluctuated between -8 nT and 8 nT. The magnetic field orientation was predominantly in the positive sector (field directed away from the Sun). Similar conditions can be expected for the next days with a probability for further enhancements from late on June 7th, due to the CME associated with a filament eruption in the southwest sector on June 4th, which may have a glancing blow at Earth.



USET observes sunspots by eye

There was quite the excitement in USET team last week. Not one, but two sunspot regions were visible with the naked eye!

An M class flare observed with ROB ground based observatories

Ground based optical and radio solar instruments from ROB monitor together the recent period of increased solar activity

EUI can observe both elephants and mice among solar eruptions

The EUI telescope on Solar Orbiter was able to catch the miniature version of solar flares and mass ejections. Thanks to sharp and fast imaging of the EUI telescope, researchers could observe magnetic reconnection taking place repeatedly on very small scales.


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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