Affichage des archives de mardi, 6 janvier 2026

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2026 Jan 06 1232 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
06 Jan 2026	152	007
07 Jan 2026	148	007
08 Jan 2026	142	010

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 C4.0 flare (SIDC Flare 6589), peaking at 07:54 UTC on January 6, associated with SIDC Sunspot Group 709 (NOAA Active Region 4323; magnetic type beta). There are currently seven numbered active regions on the visible solar disk. A new region emerged in the northwestern hemisphere (SIDC Sunspot Group 755, N11W61; magnetic type beta), but it remained quiet. SIDC Sunspot Group 745 (NOAA Active Region 4325; magnetic type beta), that remains the largest active region, is approaching the west solar limb and did not produce any flaring activity. Solar flaring activity is expected to remain low over the next 24 hours, with C-class flares likely and a chance for M-class flares.

Éjection de masse coronale

A faint coronal mass ejection (SIDC CME 619) was observed in SOHO/LASCO-C2 at around 02:12 UTC on January 6, directed toward the southeast from Earth’s perspective. The CME is likely associated with a C2.1 flare, peaking at 00:21 UTC on January 6, produced by SIDC Sunspot Group 722 (NOAA Active Region 4334) and a small coronal dimming. While the bulk of the ejecta is expected to miss Earth, a glancing blow cannot be fully excluded. Further analysis is ongoing. No other Earth-directed CMEs were detected in the available coronagraph imagery over the past 24 hours.

Trous coronaux

A large negative polarity transequatorial coronal hole (SIDC Coronal Hole 144) has started to cross the central meridian. The associated high-speed stream is expected to arrive at Earth starting late on January 8

Vent solaire

Over the past 24 hours, solar wind parameters (ACE and DSCOVR) reflected the waning influence of an ICME. The solar wind speed decreased from around 450 km/s to 380 km/s. The interplanetary magnetic field remained below 8 nT, and its southward component reached a minimum of about -6 nT. Slow solar wind conditions are expected to prevail over the next days, with a possibility of further enhancements from late on January 8 due to the anticipated arrival of a high-speed stream from a large negative polarity coronal hole (SIDC Coronal Hole 144)

Géomagnétisme

Geomagnetic conditions were quiet to unsettled both globally and locally over Belgium (NOAA Kp = 1 to 3-; K-Bel = 1 to 3). Mostly quiet geomagnetic conditions are expected over the next days. From late on January 8, geomagnetic conditions may reach active to minor storm levels, due to the expected arrival of a high-speed stream from a large recurrent negative polarity coronal hole (SIDC Coronal Hole 144).

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-19 satellite, remained below the 1000 pfu threshold over the past 24 hours. The greater than 2 MeV electron flux, as measured by the GOES-18 satellite, exceeded the 1000 pfu threshold between 19:00 and 23:00 UTC on January 5 and remained below the threshold for the rest of the period. The greater than 2 MeV electron flux is expected to remain below the 1000 pfu threshold over the next 24 hours. The electron fluence was at normal to moderate levels and is expected to be at normal levels over the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 115, sur la base de 10 stations.

Indices solaires pour 05 Jan 2026

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	154
AK Chambon La Forêt	013
AK Wingst	011
Ap estimé	012
Nombre international de taches solaires estimé	103 - Basé sur 19 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

<< Aller à l'aperçu quotidien