Affichage des archives de jeudi, 21 avril 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Apr 21 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
21 Apr 2016	080	006
22 Apr 2016	079	013
23 Apr 2016	079	022

Bulletin

Quiet solar conditions were observed with the X ray flux remaining below C level. The occassional B flares were produced by Catania group 54 (NOAA 2529) as it rotated over the West limb. The other two regions are unremarkable and appear inactive. Quiet solar conditions are expected to continue over the next days. No Earth directed CMEs were observed in coronagraph data. Solar wind conditions were nominal but slightly increasing. Solar wind speed reached 450 km/s and total magnetic field strength was in the 5-9.5nT range. Bz was variable but mostly positive while the magnetic field phi angle remained in the positive sector. Solar wind conditions are expected to by April 23 become slightly increased due to the influence of the positive polarity trans-equatorial coronal hole. Geomagnetic conditions were quiet to unsettled (NOAA Kp 0-2, local K Dourbes 0-3). Periods of active conditions are possible by April 23 due to the coronal hole high speed stream influence.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 026, sur la base de 23 stations.

Indices solaires pour 20 Apr 2016

Nombre de Wolf, observé par Catania	041
Flux solaire à 10 cm	083
AK Chambon La Forêt	009
AK Wingst	004
Ap estimé	005
Nombre international de taches solaires estimé	025 - Basé sur 33 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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