Affichage des archives de dimanche, 12 janvier 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Jan 12 1233 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

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

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
12 Jan 2020	073	005
13 Jan 2020	073	013
14 Jan 2020	073	019

Bulletin

The solar activity has been at low levels over the past 24 hours. The sun is currently spotless and the X-ray flux is below C-level. The solar activity is expected to remain at low levels for the next 24 hours.

No earth-directed coronal mass ejection was identified in the available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal values.

The solar wind environment was returning towards an ambient background and slow solar wind speed regime. The solar wind speed globally decreased from 450 km/s to about 340 km/s, the total magnetic field fluctuated between 1 nT and 6 nT, and the southern component of the magnetic filed was between -4 nT and 5.5 nT (as recorded by the ACE spacecraft). We anticipate enhancements of the solar wind tomorrow Jan 13 close to the end of the day due to the high-speed streams from the returning positive polarity coronal holes that reached the central meridian on Jan 10.

Quiet geomagnetic conditions were observed is expected for the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 14 stations.

Indices solaires pour 11 Jan 2020

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	074
AK Chambon La Forêt	010
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	000 - Basé sur 18 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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