Affichage des archives de samedi, 6 janvier 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Jan 06 1230 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
06 Jan 2018	068	003
07 Jan 2018	068	004
08 Jan 2018	069	024

Bulletin

The solar activity was quiet over the past 24 hours and no flare has been recorded. The sunspot that has emerged yesterday on Jan 06 (NOAA active region 2693) shows already a decay. Quiet flaring conditions are expected for the next 24-hour period with possible but not very likely B to C-class flares from the sunspot.

No Earth directed Coronal Mass Ejection has been observed. The greater than 10 MeV solar protons flux remained at nominal levels over the past 24 hours and is expected to remain so.

The solar wind conditions were within the slow wind speed stream over the past 24 hours. The solar wind speed was ranging between 300 and 340 km/s. The interplanetary magnetic field magnitude was below 5 nT, and the Bz component was ranging from -4 to 4 nT. Solar wind enhancements and high speed streams associated with the coronal hole (which was facing Earth on Jan 05) are not expected to arrive before Jan 08.

The geomagnetic conditions were quiet and it is expected to remain quiet as the Earth is within the slow solar wind speed stream. Disturbance of the geomagnetic conditions are anticipated on Jan 08 due to the arrival of the high speed streams associated with the coronal hole.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 010, sur la base de 09 stations.

Indices solaires pour 05 Jan 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	069
AK Chambon La Forêt	009
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	011 - Basé sur 15 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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