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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 2024-03-25

The global geomagnetic conditions reached severe storm levels (NOAA Kp 8) yesterday during the 15:00-18:00 UTC interval. The preceding and following intervals registered moderate storm levels (NOAA Kp 6 during 12:00-15:00 UTC and Kp 6+ during 18:00-21:00 UTC).

Flaremail 2024-03-28

A class M7.1 solar X-ray flare occurred on 2024/03/28 with peak time 06:29UT

CACTus Halo 2024-03-27

A halo or partial-halo CME was detected with the following characteristics: t0 | dt0| pa | da | v | dv | minv| maxv| 2024-03-27T03:12:11.858 | 3.0 | 84 | 258 | 1201 | 505 | 151 | 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

Forecasts

  • Flare: M-class flares
    (≥50%)
  • Protons: Quiet
  • Geomagnetic: Quiet
    (A<20 and K<4)
  • All quiet: False
  • Provisional SSN: 101

Solar Activity

URSIgram 2024-03-28

The solar flaring activity was moderate with one M-class flare recorded. The largest flare of the period was an M7.1 flare with peak time 06:29 UTC March 28. This flare originated from Catania region 22 (NOAA AR 3615), which is the largest and most complex region on disk (Beta-Gamma-Delta) but has begun to decay slightly. This region also produced much of the C-class flaring activity. Catania region 30 and 32 (NOAA ARs 3623 and 3622) decayed into plage regions The remaining regions on disk are simple and were either stable or in decay. The solar flaring activity is expected to be at moderate levels over the next 24 hours with C-class flares expected, M-class flares likely and a low probability for an X-class flare. No Earth directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph imagery. Two small positive polarity coronal holes one near the equator and one in the southern hemisphere began to cross the central meridian on March 27. Over the past 24 hours the greater than 10 MeV GOES proton flux was still slightly enhanced but remained below the 10pfu threshold. The proton flux is expected to continue to decrease and remain below 10 Mev threshold over the next 24 hours. The greater than 2 MeV electron flux remained below the 1000 pfu threshold as measured by GOES 16. It is expected to exceed this threshold over the next days. The 24-hour electron fluence was at nominal levels. The electron fluence is expected to increase to normal to moderate levels over the next day.

Solar Wind

URSIgram 2024-03-28

Geomagnetic conditions were at quiet levels (NOAA Kp 2 and Local K Bel 2). Geomagnetic conditions are expected to be at quiet to unsettled levels on March 28 to March 30. The solar wind speed gradually decreased from values around 500 km/s to around 420 km/s due to the waning influence of the ICME which arrived on March 24. The interplanetary magnetic field ranged between 0 and 5 nT. The Bz component reached a minimum value of -2 nT. The interplanetary magnetic field phi angle was predominantly in the positive sector. The solar wind speed is expected to reflect slow solar wind conditions on March 28 and 29, enhancements due to the solar wind associated with the positive coronal holes may be expected from March 30.

Research

News

Teamwork

A long-duration X1 flare was associated with the strongest proton event so far this solar cycle, as well as with an earth-directed full halo CME. ***UPDATE: The ICME arrived shortly after noon on 24 March, sparking a severe geomagnetic storm.***

NOAA 3599's spectacular eruption

Active region NOAA 3599 had already rotated over the Sun's west limb when it produced a spectacular long duration C-class flare.

Slowly but surely

The polar field reversal on the Sun is ongoing, but it is not completed yet as testified by observations.
 

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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