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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

Presto 2024-06-12

A halo coronal mass ejection (CME) has been detected around 22:43 UTC on June 11 in SOHO/LASCO-C2 chronograph imagery. The CME source region is believed to be behind the west limb and no impact on Earth is expected.

Flaremail 2024-06-10

A class M9.5 solar X-ray flare occurred on 2024/06/10 with peak time 18:40UT

CACTus Halo 2024-06-12

A halo or partial-halo CME was detected with the following characteristics: t0 | dt0| pa | da | v | dv | minv| maxv| 2024-06-11T07:12:07.451 | 11.0 | 204 | 170 | 496 | 160 | 175 | 868 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
  • Protons: Warning condition
    (increased activity)
  • Geomagnetic: Quiet
    (A<20 and K<4)
  • All quiet: False
  • Provisional SSN: 118

Solar Activity

URSIgram 2024-06-12

Solar flaring activity over the last 24 hours has been at low levels, with C-class flares only. The strongest flare was a C9.1 flare peaking at 04:43 UTC, associated with NOAA AR 3697 (previously beta-gamma-delta) which has rotated beyond the visible disk. There are currently six active regions on the solar disk. The most complex regions are NOAA AR 3707, 3709 and 3711 (all beta). NOAA AR 3703 and NOAA AR 3710 have rotated behind the west limb. NOAA AR 3704 has decayed into plage. Two new ARs, NOAA AR 3712 and NOAA AR 3713 are rotating on disk from the south-east limb. The solar flaring activity is expected to be at low levels over the next 24 hours, with C-class flares expected and a small chance of M-class flares. An asymmetric halo CME was first detected around 22:43 on June 11 in SOHO/LASCO-C2. It is most likely backsided and it is not expected to have an impact on Earth. A Type II radio burst reported at 22:51 UTC on June 11, is most likely associated with this CME. The partial halo CME detected at 23:36 UTC on June 10 in SOHO/LASCO-C2 is most likely backsided and it is not expected to have an impact on Earth. The greater than 10 MeV proton flux was below the threshold level over the past 24 hours but has increased near the threshold around 05:00 UTC, possibly as a result of flaring activity from NOAA AR 3697. It is expected to remain below the threshold level over the next 24 hours but could increase in case of further events particularly from NOAA AR 3697. The greater than 2 MeV electron flux was below the threshold level in the last 24 hours and is expected to remain so over the next 24 hours. The 24h electron fluence is presently at normal levels and is expected to remain so over the next 24 hours.

Solar Wind

URSIgram 2024-06-12

Geomagnetic conditions were globally and locally at quiet levels (NOAA Kp and K BEL between 0 and 2). Similar quiet conditions are expected over the next 24 hours. The Earth is inside the slow solar wind, with speed values ranging from 335 km/s to 417 km/s and an interplanetary magnetic field around 5 nT. The Bz component varied between -3.8 nT and 5.3 nT. The interplanetary magnetic field phi angle was predominantly in the positive sector. Slow solar wind conditions are expected over the next 24 hours.




SC25 update

The STCE's SC25 Tracking page has been updated to reflect the latest evolution of some critical space weather parameters for the ongoing solar cycle 25 (SC25).

Topical Issue "Swarm 10-Year Anniversary"

The Journal of Space Weather and Space Climate (JSWSC) opens the Topical Issue “Swarm 10-Year Anniversary”, dedicated to new results from ESA’s Swarm mission, in particular to investigations of the Magnetosphere-Ionosphere Coupling, Ionospheric and Thermospheric processes, and their implications for Space Weather.

GNSS impacts from the 10-11 May extreme storm

Important ionospheric effects over Europe have been observed during the extreme geomagnetic storm of 10 and 11 May.


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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