Affichage des archives de vendredi, 22 avril 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Apr 22 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
22 Apr 2016	074	012
23 Apr 2016	076	026
24 Apr 2016	080	011

Bulletin

Quiet Solar weather conditions were observed. No significant flaring was observed and the background X-ray flux remained below C level. Catania group 59 (NOAA region 2532) showed diffusion while Catania spot 60 (NOAA region 2533) remained an unremarkable unipolar spot. Quiet conditions are expected to continue with X-ray flux remaining below C level. No Earth-directed CME's have been observed. Solar wind speed was in the 390-460 km/s range with total magnetic field showing initially a general downward trend but recently recovering to its initial value around 9nT. Bz and to a lesser extent the magnetic field phi angle were rather volatile. Solar wind conditions may somewhat increase with the expected influence of the transequatorial positive polarity coronal hole. Geomagnetic conditions were quiet to unsettled (both local K Dourbes and NOAA Kp 1-3). Geomagnetic conditions may see some active periods in the next 24-48 hours due to the expected enhanced solar wind conditions under the influence of the mentioned transequatorial coronal hole.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 021, sur la base de 17 stations.

Indices solaires pour 21 Apr 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	077
AK Chambon La Forêt	011
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	026 - Basé sur 35 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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