Affichage des archives de samedi, 10 janvier 2026

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2026 Jan 10 1232 UTC

Prévisions SIDC

Éruptions solaires

C-class flares expected, (probability >=50%)

Géomagnétisme

Minor storm expected (A>=30 or K=5)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
10 Jan 2026	115	018
11 Jan 2026	115	037
12 Jan 2026	117	017

Régions solaires actives et éruptions solaires

Solar flaring activity was low over the past 24 hours, with several C-class flares recorded. The largest flare was a C1.2 flare (SIDC Flare 6622), peaking at 14:22 UTC on January 9, associated with SIDC Sunspot Group 754 (NOAA Active Region 4336; magnetic type beta-gamma). There are currently four numbered active regions on the visible solar disk. SIDC Sunspot Group 754 (NOAA Active Region 4336) remains the most complex active region on the disk and was the main driver of the flaring activity observed over the past 24 hours. A new region emerged and was numbered in the southeastern hemisphere (SIDC Sunspot Group 759, NOAA Active Region 4339; S16E02; magnetic type beta), but it remained quiet. SIDC Sunspot Group 757 (NOAA Active Region 4337; magnetic type beta) is approaching the west limb. Solar flaring activity is expected to remain low over the next 24 hours, with C-class flares very likely and a small chance of M-class flares.

Éjection de masse coronale

No Earth-directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph images over the past 24 hours.

Trous coronaux

A small equatorial negative polarity coronal hole (SIDC Coronal Hole 136) has started to cross the central meridian today, on January 10.

Vent solaire

Over the past 24 hours, solar wind parameters (ACE and DSCOVR) reflected the ongoing influence of the high-speed stream. The interplanetary magnetic field magnitude decreased from about 14 nT to current values below 9 nT. The solar wind speed decreased from about 560 km/s to 480 km/s. The southward component of the interplanetary magnetic field fluctuated between -8 nT and 9 nT. The magnetic field orientation was predominantly in the negative sector (field directed toward the Sun). Solar wind conditions are expected to remain slightly elevated over the next day, with a chance of a weak enhancement late on January 10 to early on January 11 due to possible ICME arrivals associated with the CMEs that lifted off the solar surface at around 06:24 UTC on January 8 (SIDC CME 620) and around 17:00 UTC on January 8 (SIDC CME 622).

Géomagnétisme

Geomagnetic conditions reached active levels globally (NOAA Kp = 4-) between 06:00 and 09:00 UTC on January 10. Locally over Belgium, quiet to unsettled conditions were observed (K-Bel = 1 to 3). Mostly unsettled to active geomagnetic conditions are expected over the next days, with a chance of isolated minor to moderate storm periods from late on January 10 to early on January 11, due to possible ICME arrivals associated with the CMEs that lifted off the solar surface at around 06:24 UTC on January 8 (SIDC CME 620) and around 17:00 UTC on January 8 (SIDC CME 622).

Niveaux de flux de protons

The greater than 10 MeV proton flux, as measured by the GOES-19 satellite, was at background levels over the past 24 hours and is likely to remain so over the next 24 hours.

Flux d'électrons sur l'orbite géostationnaire

The greater than 2 MeV electron flux, as measured by the GOES-18 and GOES-19 satellites, remained below the 1000 pfu threshold over the past 24 hours. The greater than 2 MeV electron flux may exceed the 1000 pfu threshold over the next 24 hours. The electron fluence was at normal levels and is expected to be at normal to moderate levels over the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 055, sur la base de 05 stations.

Indices solaires pour 09 Jan 2026

Nombre de Wolf, observé par Catania	078
Flux solaire à 10 cm	117
AK Chambon La Forêt	017
AK Wingst	012
Ap estimé	012
Nombre international de taches solaires estimé	066 - Basé sur 08 stations

Résumé des événements marquants

Données fournies par le Solar Influences Data analysis Center© - SIDC - Traité par SpaceWeatherLive

Toutes les heures sont indiquées en UTC

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