Affichage des archives de vendredi, 28 octobre 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Oct 28 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
28 Oct 2016	080	021
29 Oct 2016	079	016
30 Oct 2016	080	018

Bulletin

NOAA 2603 produced a few small B-class flares including a B3.1 at 07:17UT, the strongest event of the period. The region will rotate over the west limb during the next 24 hours. Two other sunspot regions, Catania 50 (near disk centre) and an unnumbered region near N10W50 are small and quiet. No earth-directed coronal mass ejections (CMEs) were observed.

Quiet flaring conditions are expected to continue, with a chance on an isolated C-class flare.

Earth remained under the influence of the high speed stream (HSS) from the huge coronal hole (CH). Solar wind speed initially decreased further to values near 550 km/s by about 06UT before increasing again to its current values between 650 and 700 km/s. Bz varied between -6 and +4 nT, with the interplanetary magnetic field (IMF) directed away from the Sun (positive). Kp ranged from unsettled conditions to minor geomagnetic storming, while K Dourbes ranged from quiet conditions to minor storming.

The geo-environment is expected to remain under the influence of the CH HSS. Quiet to minor storm conditions are expected.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 038, sur la base de 11 stations.

Indices solaires pour 27 Oct 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	079
AK Chambon La Forêt	039
AK Wingst	034
Ap estimé	034
Nombre international de taches solaires estimé	025 - Basé sur 21 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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