Affichage des archives de mercredi, 31 octobre 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Oct 31 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
31 Oct 2018	068	007
01 Nov 2018	068	006
02 Nov 2018	068	003

Bulletin

Solar activity was at very low levels. The visible solar disk was devoid of sunspots. No earth-directed coronal mass ejections (CMEs) were observed over the last 24 hours. The greater than 10 MeV proton flux was at nominal values. A positive polarity equatorial coronal hole has started its transit of the Central Meridian early on 31 October.

Solar activity is expected to remain at very low levels.

Solar wind speed varied mostly between 290 and 320 km/s (DSCOVR). Bz ranged between -5 and +4 nT. The direction of the interplanetary magnetic field (phi angle) was towards the Sun until about 01UT, being variable for the rest of the period. Quiet geomagnetic conditions were observed.

Quiet geomagnetic conditions are expected to continue until the arrival of the wind stream associated with the small negative polarity equatorial CH, probably later today. This may result in unsettled geomagnetic conditions.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 20 stations.

Indices solaires pour 30 Oct 2018

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	067
AK Chambon La Forêt	005
AK Wingst	004
Ap estimé	003
Nombre international de taches solaires estimé	000 - Basé sur 24 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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