Affichage des archives de vendredi, 29 juillet 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Jul 29 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
29 Jul 2016	070	021
30 Jul 2016	072	007
31 Jul 2016	076	007

Bulletin

Flaring activity has been very low, no C-class flares in past 24 h. There are two active regions on the visible solar disc, Catania 13 (no NOAA number) that emerged close to disk center yesterday and Catania 14 (NOAA AR 2570) that rotated over the east limb. No large flares expected (although C-class flares are possible). A filament erupted close to disk center starting around 16:00 UT on July 28, it produced a slow and faint CME directed to the southwest first seen at 22:36 UT on LASCO C2. This CME could have an Earth directed component, that could reach the Earth on August 2. Unsettled to active geomagnetic conditions were registered in the past 24 h, due to the effect of a high speed stream that reached 600 km/s with magnetic field intensities up to 20 nT (without long periods of negative Bz). Solar wind speed is still high, at 600 km/s, with interplanetary magnetic field magnitude of 5 nT. Unsettled to active conditions are expected for the next 48 h.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 021, sur la base de 23 stations.

Indices solaires pour 28 Jul 2016

Nombre de Wolf, observé par Catania	023
Flux solaire à 10 cm	070
AK Chambon La Forêt	026
AK Wingst	017
Ap estimé	019
Nombre international de taches solaires estimé	007 - Basé sur 36 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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