Affichage des archives de jeudi, 13 avril 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Apr 13 1249 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
13 Apr 2017	069	003
14 Apr 2017	068	007
15 Apr 2017	067	013

Bulletin

Solar activity was at very low levels during the period. The only event was a B2.4 flare peaking at 14:32 UT yesterday. The flare was produced by NOAA 2650 Active Region (McIntosh class: Cso; Mag.Type: Beta). The X-Ray solar flux remained below B-class flaring level afterwards. No Earth-directed CMEs was observed in coronagraph imagery. Integral proton flux for protons with energies above 10 MeV remained at background level. B-class flaring is expected. Solar wind speed gradually decreased from 440 km/s to 400 km/s by the end of the period. The interplanetary magnetic field was below 5 nT. Bz fluctuated between -2.1 and +2.5 nT. Quiet geomagnetic conditions (K Dourbes between 0 and 2; NOAA Kp between 0 and 2) were registered in the past 24 hours. Quiet geomagnetic conditions are expected today (13 April). Unsettled geomagnetic conditions are possible from tomorrow (14 April) due to potential glancing blow from 10 April CME. Isolated episodes of active geomagnetic conditions can be expected from 15 April due to the influence of possible CME effects or of high speed streams from a low latitude coronal hole.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 025, sur la base de 20 stations.

Indices solaires pour 12 Apr 2017

Nombre de Wolf, observé par Catania	027
Flux solaire à 10 cm	071
AK Chambon La Forêt	006
AK Wingst	004
Ap estimé	005
Nombre international de taches solaires estimé	019 - Basé sur 27 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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