Skip to main content

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: 2026-07-08

Forecasts

  • Flare: C-class flares
    (≥50%)
  • Protons: Warning condition
    (increased activity)
  • Geomagnetic: Quiet
    (A<20 and K<4)
  • All quiet: False
  • Provisional SSN:

Solar Activity

URSIgram 2026-07-13

Solar flaring activity has been low over the past 24 hours, with few C-class flares. The strongest flare was a C2.6 flare (SIDC Flare 8194) peaking at 13:58 UTC on July 12, associated with SIDC Sunspot Group 909 (NOAA Active Region 4485, magnetic type beta). There are currently five numbered active regions on the solar disk, four of which have a beta magnetic configuration. SIDC Sunspot Group 909 (NOAA Active Region 4485) is currently rotating across the west limb. SIDC Sunspot Group 906 (NOAA Active Region 4481) has decayed into plage. SIDC Sunspot Group 916 (magnetic type alpha) has rotated on disk from the east limb, in the southeast quadrant. The solar flaring activity is expected to be low over the next 24 hours, with C-class flares very likely and a chance for M-class flares. No Earth-directed Coronal Mass Ejections (CMEs) were observed in the available coronagraph imagery during the past 24 hours. A southern, positive polarity coronal hole (SIDC Coronal Hole 173) crossed the central meridian in the UTC afternoon on July 12. A mild high-speed stream may arrive at Earth starting from July 15. The greater than 10 MeV proton flux was below the 10 pfu threshold during the past 24 hours. It is expected to remain below the threshold level over the next 24 hours. The greater than 2 MeV electron flux measured by GOES 18 was above the 1000 pfu threshold between 11:00 UTC on July 12 and 01:40 UTC on July 13. The greater than 2 MeV electron flux measured by GOES 19 was above the 1000 pfu threshold between 11:30 UTC on July 12 and 19:00 UTC on July 13. The greater than 2 MeV electron flux is expected to remain mostly below the 1000 pfu threshold over the next 24 hours. The 24-hour electron fluence was at moderate levels but it is expected to decrease to normal levels over the next 24 hours.

Solar Wind

URSIgram 2026-07-13

Geomagnetic conditions globally reached minor storm levels (NOAA Kp 5- ) between 12:00 UTC and 15:00 UTC on July 12, later decreasing to mostly quiet levels (NOAA Kp 2). Geomagnetic conditions locally reached active levels (K Bel 4) between 14:00 UTC and 20:00 UTC on July 12. Mostly quiet conditions are expected over the next 24 hours Over the last 24 hours, the solar wind parameters (SOLAR-1 and ACE) reflected a gradual return to slow solar wind conditions. The solar wind speed decreased from 520 km/s to around 430 km/s. The interplanetary magnetic field was between from 2 nT and 7 nT. The Bz component varied between -3 nT and 4 nT. The interplanetary magnetic field angle phi was predominantly in the negative sector. Mostly slow solar wind conditions are expected initially over the next 24 hours, with a chance for enhanced conditions in case of a high-speed stream arrival from the northern, negative polarity coronal hole (SIDC Coronal Hole 162) and the possible arrival of a glancing blow associated with SIDC CME 686.

Research

News

SUVI304_filament

A captivating filament eruption

A solar filament erupted late on 7 July. The associated coronal mass ejection did not affect the earth environment.
WL7879

Large and larger

Two large sunspot groups, NOAA 4478 and NOAA 4479, have been dominating the sunspot and flare activity during the previous week.
GOESSUVIX1

A new kid in the X-class town

While NOAA 4479 is approaching the Sun's west limb merrily producing M-class flares, a new active region NOAA 4482 has rounded the Sun's southeast limb producing an X1.3 flare.
 

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.

Read more

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...

Read more

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.

Read more

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.

Read more

Modeling

Modelling of Solar phenomena allows scientists to test theories and to predict Space Weather phenomena and their impact on Earth.

Read more

 

Supporting Research

The SIDC shares and expands its expertise through interaction with both upcoming and experienced researchers.

Read more