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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 2024-09-17

The greater than 10 MeV proton flux as measured by GOES 16 and GOES 18 has now exceeded the 10 pfu threshold marking a minor solar radiation storm. The proton flux levels were increased as a result of the solar activity on Sept 14th with X4.5 flaring from NOAA 3825 (beta-gamma) and associated halo coronal mass ejection (CME), which has now arrived to Earth. The greater than 10 MeV proton flux levels are expected to remain elevated on Sept 17th and start declining on Sept 18th in case of no new strong eruptive solar activity.

Forecasts

  • Flare: C-class flares
    (≥50%)
  • Protons: Quiet
  • Geomagnetic: Active conditions
    (A>=20 or K=4)
  • All quiet: False
  • Provisional SSN: 126

Solar Activity

URSIgram 2024-09-20

Solar flaring activity over the past 24 hours remained at low levels with background C-class flaring. There are six numbered regions on the visible solar disc with NOAA AR 3828 (beta-gamma-delta) growing to become the largest and most complex region. Most of the flaring activity was produced by NOAA AR 3824 (beta-gamma) from the west limb, NOAA AR 3825 (beta-gamma) and NOAA AR 3829 (beta). The solar flaring activity is likely to be predominantly at low levels over the coming days with 40% chances of M-class flares and 5% chances for isolated X-class flaring. 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 has been at nominal levels and is expected to remain so over the next 24 hours. The greater than 2 MeV electron flux as measured by GOES 18 has exceeded the 1000 pfu threshold over the past 24 hours and is expected to exceed the threshold over the next 24 hours. The 24h electron fluence was at nominal levels and is expected to be at the border of nominal to moderate levels in the next 24 hours.

Solar Wind

URSIgram 2024-09-20

The geomagnetic conditions over the past 24 hours were quiet to active. Mostly quiet to unsettled geomagnetic conditions with isolated active periods are expected over the next days. Over the past 24 hours the solar wind parameters (ACE and DSCOVR) remained slightly perturbed. The interplanetary magnetic field reached 9.1 nT with Bz as low as - 8.7 nT. The solar wind velocity varied in the range of 340 km/s to 499 km/s. The B field phi angle was in the positive sector (directed away from the Sun). The solar wind conditions are expected to continue to be slightly perturbed in the upcoming days under the possible influence of mild high speed stream.

Research

News

Opening

Some stunning solar eruptions

A compilation of some amazing solar eruptions that have been observed during the first half of September.
X4 still

A new kid on the X-class block

NOAA 3825 produced its 2nd X-class flare in as many days. The X4.5 flare peaked on 14 September at 15:29UTC. ***UPDATED (1)***
the September 3, 1944 drawing

80 years ago, our solar observers marked the liberation of Brussels

80 years ago, the Allies liberated Brussels, and this event did not go unnoticed by our solar observers!
 

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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