Affichage des archives de mardi, 8 octobre 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Oct 08 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
08 Oct 2019	068	005
09 Oct 2019	067	006
10 Oct 2019	067	004

Bulletin

Solar activity was at very low levels, no significant flares have been recorded. The Sun remained spotless. No earth-directed coronal mass ejections (CMEs) have been observed in the 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 gradually increased from approximately 350 km/s to 400 km/s (ACE), with some enhancements in the last part of the period. The direction of the interplanetary magnetic field (phi angle) was predominantly directed away from the Sun (positive sector), but switched to the negative sector from 08:00 UT October 8. Bz varied between -5 and +4 nT. Geomagnetic activity was at quiet to unsettled levels, with the Kp index (NOAA) and the local k index (Dourbes) recording values of 1-2 and 1-3, respectively.

Quiet conditions are expected to continue over the next 48 hours with possible isolated unsettled periods, due to the weak influence a negative polarity coronal hole.

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

Indices solaires pour 07 Oct 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	068
AK Chambon La Forêt	017
AK Wingst	010
Ap estimé	008
Nombre international de taches solaires estimé	000 - Basé sur 21 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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