Affichage des archives de samedi, 12 août 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Aug 12 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
12 Aug 2017	070	013
13 Aug 2017	071	015
14 Aug 2017	070	010

Bulletin

Over the past 24 hours solar activity has been very low. No significant flares have been recorded. Active Region (AR) 2670 (Mcintosh class:Hsx; Mag. type:Alpha) has been quiet. No Earth directed Coronal Mass Ejections (CMEs) have been detected. The greater than 10MeV proton flux remained at background levels over the past 24 hours. Solar activity is expected to remain low over the next 24 hours with a low probability of C-class flares. The solar wind speed has increased from around 400 to 600 km/s over the past 24 hours. The total magnetic field strength has fluctuated around 10 nT. The Bz component fluctuated around 0 nT but was mainly positive, ranging between -10 and +10 nT. Geomagnetic conditions ranged between Kp index 1-3 (NOAA) and local K index 1-3 (Dourbes) over the past 24 hours. Several small low latitude coronal holes are currently in the Western hemisphere of the Sun, and there has been a small increase in geomagnetic conditions this morning as we encountered the sector boundary combined with a negative Bz. Geomagnetic conditions are expected to be mainly quiet with some short periods of activity.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 011, sur la base de 09 stations.

Indices solaires pour 11 Aug 2017

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	070
AK Chambon La Forêt	017
AK Wingst	009
Ap estimé	008
Nombre international de taches solaires estimé	012 - Basé sur 29 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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