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Latest Alerts

Presto 2024-07-15

A X1.2-flare was registered in the GOES X-ray flux data on July 14 with start time 02:23 UTC, peak time 02:34 UTC, end time 02:52 UTC. The flare was produced by the largest and most complex region on the visible solar disc, NOAA 3738 with magnetic type configuration beta-gamma-delta. The flare was impulsive and there was no coronal mass ejection associated to it. No proton event was related to the flaring activity and only short-lived radio blackout were observed throughout the duration of the flare.

Flaremail 2024-07-14

A class X1.2 solar X-ray flare occurred on 2024/07/14 with peak time 02:34UT


  • Flare: M-class flares
  • Protons: Quiet
  • Geomagnetic: Quiet
    (A<20 and K<4)
  • All quiet: False
  • Provisional SSN: 240

Solar Activity

URSIgram 2024-07-15

Solar flaring activity was moderate during the last 24 hours with three M-class flares detected during the past 24 hours. NOAA Active Region (AR) 3738 (magnetic configuration Beta-Gamma-Delta, Catania sunspot group 85) produced all of the M-class flaring activity (namely an M1.0 at 14 Jul 20:57 UTC, an M1.2 at 15 Jul 03:35 UTC, and an M2.7 at 15 Jul 09:37 UTC) and most of the C-class flares. Bright C-class flares were also produced by NOAA AR 3751 (a C7 at 14 Jul 21:26 UTC) and NOAA AR 3744 (a C8 at 14 Jul 21:58 UTC). Further M-class flaring activity is expected from NOAA AR 3738 with a small chance of an X-flare in the next 24 hours. No Earth-directed Coronal Mass Ejections (CME) were observed in the last 24 hours. A northern Coronal Hole (CH) with negative polarity stared crossing the central meridian during the past 24 hours. An associated High Speed Stream (HSS) is expected to become geo-effective on 18 Jul. The greater than 10 MeV proton flux was at nominal levels over the past 24 hours and is expected to remain so, although there is a small chance of a proton event in the next 24 hours. The greater than 2 MeV electron flux, as measured by the GOES-16 satellite, was at nominal levels during the last 24 hours and is expected to remain at these levels during the next 24 hours. The 24h electron fluence was at very low levels during the past 24 hours and is expected to remain at these levels for the following 24 hours.

Solar Wind

URSIgram 2024-07-15

Geomagnetic conditions were globally quiet (NOAA Kp 1- to 2), while locally they had a brief period of unsettled conditions (K BEL 1-3) during the last 24 hours. They are expected to continue at quiet levels and possibly rise to unsettled levels due to the expected arrival of a High Speed Stream (HSS) in the next 24 hours. The Solar Wind (SW) conditions were typical of the slow SW regime during the last 24 hours. The SW speed varied between 270 and 330 km/s, while the total interplanetary magnetic field (Bt) ranged between 1 and 6 nT. The North-South magnetic component (Bz) fluctuated between -3 and 4 nT, while the interplanetary magnetic field phi angle was mostly directed away from the Sun in the past 24 hours. A high speed stream related to a positive polarity equatorial coronal hole that crossed the central meridian on July 10 is expected to arrive in the next 24 hours.




X1 flare in NOAA 3738

NOAA 3738 produced an X1.2 flare on 14 July 2024.

An X12 flare on the Sun's farside

On 20 May, instruments on board Solar Orbiter observed what was most likely the strongest solar flare so far during SC25.

Impressive eruption

An impressive eruption took place over the Sun's southwest limb on 24 June.


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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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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