Affichage des archives de mercredi, 12 octobre 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Oct 12 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
12 Oct 2016	098	005
13 Oct 2016	098	026
14 Oct 2016	098	057

Bulletin

Solar conditions were quiet with X-ray flux at background level. All four regions on disk were inactive and either stable or decaying. Solar conditions are expected to remain at very low levels. Proton flux levels were at background levels and expected to remain so. An equatorial negative polarity coronal hole is currently transiting the central meridian and may become geoeffective 3 days from now. No Earth directed CME's have been observed in coronagraph data.

Solar wind conditions were near nominal with solar wind speed fluctuating around 400 km/s and total magnetic field around 5 nT with a declining tendency. The magnetic field phi angle was in the negative sector throughout the period. Solar wind conditions are expected to remain nominal with later tomorrow afternoon October 13 the possible passage of the October 9 CME which should only involve a small velocity increase, but may be accompanied with magnetic field perturbations. Geomagnetic conditions have been quiet (local K Dourbes 0-2, NOAA Kp 0-1). Geomagnetic conditions are expected to remain quiet to unsettled with later, starting tomorrow afternoon October 13, possibly minor to moderate geomagnetic storm levels associated with the possible CME arrival.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 039, sur la base de 07 stations.

Indices solaires pour 11 Oct 2016

Nombre de Wolf, observé par Catania	089
Flux solaire à 10 cm	099
AK Chambon La Forêt	006
AK Wingst	002
Ap estimé	002
Nombre international de taches solaires estimé	067 - 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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