Affichage des archives de jeudi, 2 novembre 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Nov 02 1230 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
02 Nov 2017	073	010
03 Nov 2017	074	018
04 Nov 2017	076	007

Bulletin

No C-class flares in past 24 h. All ARs have decayed into plages, the Sun is spotless. There is a region rotating into view from the east limb, but it does not seem very active from STEREO observations. The X-ray flux is expected to remain below C level.

No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 h.

Geomagnetic conditions have been quiet (k = 1-2). Solar wind speed has been slowly increasing since last night (but it is still slow, under 400 km/s), together with relatively elevated magnetic fields (reaching 14 nT, with Bz mostly positive). The Earth may only see the northern boundary of the high speed solar wind stream expected from the coronal hole in the southern solar hemisphere, producing only a mild geomagnetic impact. Active conditions can be expected in the next 48 h.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 15 stations.

Indices solaires pour 01 Nov 2017

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	073
AK Chambon La Forêt	008
AK Wingst	004
Ap estimé	003
Nombre international de taches solaires estimé	000 - Basé sur 25 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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