Affichage des archives de vendredi, 2 novembre 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Nov 02 1230 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

Minor storm expected (A>=30 or K=5)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
02 Nov 2018	067	005
03 Nov 2018	068	024
04 Nov 2018	067	021

Bulletin

Solar activity remained at very low levels. The visible solar disk was spotless. 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 transited the Central Meridian.

Solar activity is expected to remain at very low levels.

Solar wind speed varied between 320 and 360 km/s (DSCOVR). Bz ranged between -3 and +4 nT. The direction of the interplanetary magnetic field (phi angle) was mostly away from the Sun (positive sector), becoming more towards the Sun after 08UT. Quiet geomagnetic conditions were observed, with an isolated unsettled episode at Dourbes.

Mostly quiet geomagnetic conditions are expected until the arrival of the co-rotating interaction region and the high speed wind stream associated with the positive polarity CH. Based on STEREO-A data, this arrival is expected for mid-to-late 3 November, with wind speeds possibly up to 650 km/s and Bz around -10 nT. Geomagnetic conditions may then reach minor storm levels, a moderate storming episode not excluded.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 26 stations.

Indices solaires pour 01 Nov 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	067
AK Chambon La Forêt	011
AK Wingst	005
Ap estimé	004
Nombre international de taches solaires estimé	000 - Basé sur 17 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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