Affichage des archives de mardi, 2 janvier 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Jan 02 1231 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
02 Jan 2018	067	003
03 Jan 2018	067	004
04 Jan 2018	068	005

Bulletin

The solar activity was quiet over the past 24 hours. The visible solar disc is spotless and no C-class flare has been recorded. Quiet flaring conditions are expected for the next 24-hour period.

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.

Over the past 24 hours, the Earth was under the influence of the solar wind associated with the Coronal Hole (which has crossed the central meridian on Dec 28). The solar wind speed has reached a maximum of 491 km/s on Jan 01 at around 15:37, it has then globally decreased and reached the current value of about 445 km/s. The interplanetary magnetic field magnitude is below 6 nT, and the Bz competent is ranging between -5 and 5 nT. The solar wind speed is expected to decrease further and return to nominal regime by tomorrow.

The geomagnetic conditions were unsettled to quiet. It is expected to be mainly quiet with the weakening of the solar wind stream associated with the coronal hole and return to nominal conditions by tomorrow.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 11 stations.

Indices solaires pour 01 Jan 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	069
AK Chambon La Forêt	014
AK Wingst	010
Ap estimé	011
Nombre international de taches solaires estimé	000 - Basé sur 04 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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