Affichage des archives de mardi, 3 décembre 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Dec 03 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
03 Dec 2019	070	002
04 Dec 2019	069	005
05 Dec 2019	069	004

Bulletin

Solar activity was at very low levels. The visible solar disk was spotless. No earth-directed coronal mass ejections (CMEs) have been observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal values. Solar activity is expected to remain at very low levels.

The solar wind speed decreased from around 340 km/s to near 300 km/s by the end of the period (ACE). The interplanetary magnetic field (phi angle) was predominantly directed towards the Sun (negative sector) for the first part of the period but switched to the positive sector from 3 UT. Bz varied between -3 and +5 nT.

Geomagnetic activity was quiet, with the Kp index (NOAA) registering 0 for the whole period and the local k index (Dourbes) recording values of 0-1. Quiet conditions are expected to continue, with a small possibility of an isolated unsettled interval on December 4, due to the influence of the extension from the southern polar coronal hole.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 17 stations.

Indices solaires pour 02 Dec 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	070
AK Chambon La Forêt	003
AK Wingst	001
Ap estimé	001
Nombre international de taches solaires estimé	000 - Basé sur 23 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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