Affichage des archives de jeudi, 20 juin 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Jun 20 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
20 Jun 2019	068	009
21 Jun 2019	069	008
22 Jun 2019	069	003

Bulletin

Solar activity was at very low levels. The Sun remains spotless and no significant flares have been recorded. No Earth directed coronal mass ejections (CMEs) were observed over the last 24 hours in the available coronagraph 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 gradually increased over the period from 320 to a maximum of around 400 km/s (DSCOVR). Bz varied between -7 and +4 nT. The interplanetary magnetic field was predominantly directed towards the Sun (negative sector). Quiet geomagnetic conditions were observed for the first part of the period becoming unsettled from 6 UT during a period of sustained negative Bz, with the Kp index (NOAA) and the local K index (Dourbes) reaching 3.

Quiet to unsettled geomagnetic conditions are expected to continue, due to the continued influence of the solar wind streams associated with a series of fragmented negative polarity coronal holes.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 18 stations.

Indices solaires pour 19 Jun 2019

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	068
AK Chambon La Forêt	007
AK Wingst	004
Ap estimé	002
Nombre international de taches solaires estimé	000 - Basé sur 29 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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