Affichage des archives de dimanche, 13 août 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Aug 13 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
13 Aug 2017	071	008
14 Aug 2017	070	015
15 Aug 2017	071	011

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, but is now approaching the west solar limb. 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 remained around 575 km/s, with several short sporadic increases to speeds up to 750 km/s, over the past 24 hours. The total magnetic field strength has been decreasing from around 10 nT to 5 nT. The Bz component fluctuated around 0 nT but was mainly positive, ranging between -5 and +7 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, and as a consequence there have been small increases in geomagnetic conditions. 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 21 stations.

Indices solaires pour 12 Aug 2017

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	070
AK Chambon La Forêt	019
AK Wingst	012
Ap estimé	014
Nombre international de taches solaires estimé	011 - Basé sur 20 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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