Affichage des archives de mardi, 28 octobre 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Oct 28 1245 UTC

Prévisions SIDC

Éruptions solaires

Major flares expected (X-class flares expected, probability >=50%)

Géomagnétisme

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

Moniteur de Flux de Proton

Warning condition (activity levels expected to increase, but no numeric forecast given)

	Flux de 10 cm	Ap
28 Oct 2014	165	014
29 Oct 2014	160	006
30 Oct 2014	150	007

Bulletin

Another X-class flare was produced by Catania sunspot group 88 (NOAA AR 2192); an X2.1 flare peaked at 14:47 UT on October 27. Also three M-class and several C-class flares were added to the activity list of this region. No associated CME was observed, nor was there an increase in proton flux. The region retains its area and magnetic complexity and has still high potential to produce additional flares up to the X-level. It is currently located close to the West limb and a strong eruption may result in a rise of the proton flux. The extended filament in the northern hemisphere has the potential to lift off and produce an Earth- directed CME. Earth is inside a slow solar wind, with a speed near 400 km/s. The interplanetary magnetic field magnitude reaches values up to 8 nT, with an often southward oriented Bz. Mostly quiet geomagnetic conditions are observed, with a few isolated time slots of active (K=4, measured at Dourbes) conditions. Quiet to active conditions are expected to continue.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 071, sur la base de 13 stations.

Indices solaires pour 27 Oct 2014

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	188
AK Chambon La Forêt	020
AK Wingst	015
Ap estimé	015
Nombre international de taches solaires estimé	083 - 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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