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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

None

No alerts since: 2026-02-11

Forecasts

  • Flare: C-class flares
    (≥50%)
  • Protons: Quiet
  • Geomagnetic: Minor storm
    (A>=30 or K=5)
  • All quiet: False
  • Provisional SSN:

Solar Activity

URSIgram 2026-02-15

Solar flaring activity was low over the past 24 hours, with only C-class flares identified. The largest flare was a C1.3 flare (SIDC Flare 7036) peaking on February 15 at 07:27 UTC, which was produced by SIDC Sunspot Group 793. A total of 5 numbered sunspot groups were identified on the disk over the past 24 hours. SIDC Sunspot Group 795 (NOAA Active Region 4377) is the most magnetically complex (Beta) region on disk. Solar flaring activity is expected to be low over the next 24 hours, with C-class flares likely and a small chance for M-class flares. No Earth directed Coronal Mass Ejections (CMEs) were observed in the available coronagraph imagery over the past 24 hours. SIDC Coronal Hole 150 (equatorial coronal hole with a negative polarity) started crossing the central meridian on February 14. A high-speed stream associated with this coronal hole is expected to arrive at Earth early on February 17. The greater than 10 MeV GOES proton flux was at background levels and is expected to remain at background levels over the next 24 hours. The greater than 2 MeV electron flux, as measured by the GOES-18 and GOES-19 satellites remained below the threshold level in the last 24 hours. The electron flux is expected to remain below the threshold in the coming 24 hours. The 24h electron fluence is presently at normal level, and it is expected to remain so in the next 24 hours.

Solar Wind

URSIgram 2026-02-15

The geomagnetic conditions reached minor storm condition globally and locally (Kp 5+ & K BEL 5) in the last 24 hours. Active to minor storm conditions are expected over the next 24 hours. Over the past 24 hours the solar wind parameters came under the influence of a high-speed stream associated with SIDC Coronal Hole 146. The solar wind speed gradually rose from 370 km/s to 722 km /s. The total interplanetary magnetic field ranged from 5 to 15 nT, with the Bz reaching a minimum of -14 nT. The phi-angle was mainly in the positive sector (directed away from the Sun), with a period between 16:00 UTC on February 14 and 00:10 UTC on February 15. In the next 24 hours solar wind conditions are expected to remain enhanced.

Research

News

STA X8

It's all flares on the menu!

NOAA 14366 has become the most flare-productive group of the ongoing solar cycle. In fact, it's already on the third place of groups producing the most M- and X-class flares since the start of the GOES measurements half a century ago!
SOHOproton

Perspective

On 19 January 2026, one of the strongest solar radiation storms of the last few decades took place. However, though the storm contained a large number of low-energy protons, the number of high-energy protons remained mostly at background levels. A few aspects of this event are discussed, and a crude reference is provided.
X1_01Feb2026

X-class flares and a geomagnetic storm

The magnetic cloud ("CME") associated with the strong flare late on 1 February produced by sunspot group 4366, arrived yesterday 4 February. It resulted in a -still ongoing- minor geomagnetic storm. For Belgium, this means no aurora are visible. Meanwhile, NOAA 4366 produced another strong X-class flare on 4 February. (***UPDATED 6***)
 

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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