Affichage des archives de vendredi, 11 octobre 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Oct 11 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
11 Oct 2019	068	006
12 Oct 2019	067	005
13 Oct 2019	067	007

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 has remained slightly elevated with values fluctuating around 480 km/s (ACE). The total magnetic field varied between 1 and 6 nT. The direction of the interplanetary magnetic field (phi angle) was predominantly directed away from the Sun (positive sector). Bz was mostly negative but weak with values between -5 and +3 nT. Geomagnetic activity was quiet to unsettled for most of the period, with an isolated active interval at 17:00 UT Oct 10, as measured by the local K-index at Dourbes.

Quiet to unsettled conditions are expected to continue for Oct 11-12 with isolated active conditions possible on Oct 13, due to the influence of a negative polarity coronal hole which began to traverse the central meridian on Oct 10.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 12 stations.

Indices solaires pour 10 Oct 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	068
AK Chambon La Forêt	018
AK Wingst	014
Ap estimé	015
Nombre international de taches solaires estimé	000 - Basé sur 28 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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