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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 2024-10-31

An X2.0-flare with start time 21:12 UTC, end time 21:27 UTC and peak time 21:20 UTC on Oct 31st was produced by SIDC Sunspot Group 217 (NOAA Active Region 3878). This region has a complex magnetic field configuration, classified as type beta-gamma-delta, and has produced multiple M-class flaring over the past days. The greater than 10 MeV proton flux levels are expected to increase over the next hours. Coronagraph imagery are further awaited to check for any possible Earth-directed coronal mass ejection related to this event.

CACTus Halo 2024-10-31

A halo or partial-halo CME was detected with the following characteristics: t0 | dt0| pa | da | v | dv | minv| maxv| 2024-10-28T11:24:11.308 | 6.0 | 234 | 246 | 686 | 369 | 95 | 1202 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: Warning condition
    (increased activity)
  • Geomagnetic: Active conditions
    (A>=20 or K=4)
  • All quiet: False
  • Provisional SSN: 221

Solar Activity

URSIgram 2024-11-02

Solar flaring activity was moderate over the past 24 hours, with 4 M-class flares. The largest flare was an M2.0 flare (SIDC Flare 2466) peaking on November 01 at 14:31 UTC, which was produced by SIDC Sunspot Group 217 (NOAA Active Regions 3878). This region along with SIDC Sunspot Group 273 (NOAA Active Region 3869) are the largest and most complex regions on disk, classified as magnetic type beta-gamma. SIDC Sunspot Group 295 (NOAA Active Region 3871) re-emerged, while Sunspot Group 298 (NOAA Active Region 3876) grew over the period and both also produced low level M-class flares. These two regions are expected to rotate over the west limb over the next 24 hours. A new region, numbered SIDC Sunspot Group 303 (NOAA Active Region 3881) currently located at S09E26, also emerged and has a Beta magnetic configuration, but was quiet. The solar flaring activity is expected to be moderate over the next 24 hours, with M-class flares very likely and a small chance for X-class flares. No Earth-directed coronal mass ejections (CMEs) have been detected in the available coronagraph imagery over the past 24 hours. Over the past 24 hours the greater than 10 MeV GOES proton flux continued to decrease and was below the 10 pfu minor radiation storm threshold but remains above background levels. The greater than 10 MeV GOES proton flux is expected to continue decrease towards nominal levels over the 24 hours but there is an ongoing chance for new enhancements related to anticipated high levels of solar eruptive activity. The greater than 2 MeV electron flux as measured by GOES 16 and GOES 18 was below the 1000 pfu threshold and is expected to remain so over the next 24 hours. The 24h electron fluence was at nominal levels and is expected to remain so in the next 24 hours.

Solar Wind

URSIgram 2024-11-02

The geomagnetic conditions over the past 24 hours were quite to unsettled. Mostly unsettled to active geomagnetic conditions are expected for the next 24 hours. Active conditions, with possible isolated minor storm intervals, are expected for November 03 to November 04. Over the past 24 hours the interplanetary magnetic field continued to be slightly elevated, and increased further from 09:00 UTC November 02, reaching a maximum value of 12 nT with a minimum Bz of -12 nT. The solar wind velocity ranged between 373 and 508 km/s. The interplanetary magnetic field phi angle remained predominantly in the negative sector (directed towards the Sun). The solar wind conditions are expected to remain slightly elevated over the next 24 hours due to the two possible high speed stream arrivals and a predicted weak glancing blow CME arrival from late on November 03.

Research

News

SUVIX2

X2.0 flare in NOAA 3878

Another X-class flare, and once again from a different region. NOAA 3878 was the source of an X2.0 flare on 31 October.
HalphaX3

Comparing 2 solar storms

The solar storms of 24 and 26 October are compared from the initial X-class flare to the geomagnetic disturbance that resulted from the associated coronal mass ejection.
AIA094_X1

X1.8 flare in NOAA 3873

Another X-class flare, but from a different region. The associated coronal mass ejection may deliver a glancing blow on 28 October.
 

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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