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Observations

Space Based Imaging

More data: SWAP, EUI

Ground Based Imaging

More: H-α, WL, Ca-IIK, Drawings

Ground Based Radio

More: ARCAS+HSRS, CALLISTO

Space Based Timelines

More data: LYRA, TSI

WDC Sunspot Index

More data: SILSO

Space Weather Services

Detections

Solar Map

Latest Alerts

Presto 2025-01-13

A partial halo CME was detected in LASCO/C2 data starting after 00:12 UTC on January 08. This CME was related to activity at the west limb and is not expected to impact the Earth.

Forecasts

  • Flare: M-class flares
    (≥50%)
  • Protons: Quiet
  • Geomagnetic: Active conditions
    (A>=20 or K=4)
  • All quiet: False
  • Provisional SSN: 128

Solar Activity

URSIgram 2025-01-16

Solar flaring activity was low over the past 24 hours, with only C-class flares identified. The largest flare was a C4.4 flare (SIDC Flare 3284) peaking on January 16 at 07:26 UTC. There are currently 7 numbered active regions on the visible disk. SIDC Sunspot group 342 (NOAA AR 3959) and SIDC Sunspot Group 346 (NOAA Active Region 3961) are the most complex AR (beta-gamma-delta). The solar flaring activity is expected to be at moderate levels over the coming day with C-class flares expected and M-class flares probable and a chance of X-class flares. No new Earth-directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph images. The large east-west elongated negative polarity equatorial coronal hole (SIDC Coronal Hole 87) is still crossing the central meridian. A high-speed stream from this coronal hole may enhance the solar wind environment near Earth starting on Jan 16 and following days. The greater than 10 MeV proton flux remained below the 10 pfu threshold and is expected to remain so over the next days. The greater than 2 MeV electron flux remained below the 1000 pfu alert threshold, and is expected to remain below the threshold during the next 24 hours. The 24h electron fluence was at normal levels and is expected to remain so.

Solar Wind

URSIgram 2025-01-16

Geomagnetic conditions were globally unsettled to active (Kp 4) and locally unsettled (K Bel 3). Quiet to active conditions are expected for the next 24 hours. Slow solar wind conditions are recorded over the past 24 hours. The solar wind at the Earth is slightly enhanced with speeds around 500 km/s and interplanetary magnetic field of 7nT with the Bz reaching a minimum value of -6 nT. Further enhancements of the solar wind speed are possible in the next 24h, due to the potential influence of the high-speed stream (HSS) associated with the coronal hole, which started to cross the central meridian on 11 Jan 2025.

Research

News

Filament front

A stretched out filament

A million km long filament has been transiting the solar disk during the last 2 weeks.
GOESSUVI

X-class flares by NOAA 3947

NOAA 3947 has been the source of several X- and M-class flares over the last 48 hours. ***Updated (2)***
GONG SUVI

X-class flares and severe geomagnetic storm

Coronal mass ejections, associated with a series of M- and X-class flares on 29 and 30 December, have resulted in a severe geomagnetic storm. ***UPDATED (4)***
 

Activities

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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Modeling

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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