Affichage des archives de lundi, 24 octobre 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Oct 24 1231 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Major magstorm expected (A>=50 or K>=6)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
24 Oct 2016	076	011
25 Oct 2016	076	045
26 Oct 2016	076	050

Bulletin

Solar activity was very low, with no x-ray flaring observed. The sole sunspot region that is currently visible, NOAA 2603, is small and decaying. No earth-directed coronal mass ejections (CMEs) were observed.

Solar flare activity is expected to remain below the C-class level.

Solar wind speed decreased from about 440 km/s to its current values near 380 km/s. Bz fluctuated between -8 nT and +6 nT, and was mostly negative. Quiet to unsettled geomagnetic conditions were observed, with an isolated active episode near midnight. The interplanetary magnetic field was mostly directed away from the Sun (positive). A huge, positive, recurrent coronal home (CH) is transiting the central meridian.

Mostly quiet to unsettled geomagnetic conditions are expected until the arrival of the co-rotating interaction region (CIR) preceding the high speed stream (HSS) from the aforementioned CH. This arrival is currently foreseen for 25 October, with minor geomagnetic storming possible from then onwards. There's a good chance on an isolated moderate storm interval (K-index = 6).

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 015, sur la base de 04 stations.

Indices solaires pour 23 Oct 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	077
AK Chambon La Forêt	///
AK Wingst	011
Ap estimé	010
Nombre international de taches solaires estimé	016 - 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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