Affichage des archives de samedi, 25 novembre 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Nov 25 1230 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
25 Nov 2017	075	011
26 Nov 2017	074	008
27 Nov 2017	074	008

Bulletin

Over the past 24 hours solar activity has been quiet. No significant flares have been recorded. All Active Regions (AR) have shown low levels of activity. No Earth directed Coronal Mass Ejections (CMEs) have been detected. The greater than 10 MeV 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 fluctuated between 350 and 450 km/s over the past 24 hours, peaking around 00:00 UT this morning. The total magnetic field strength has fluctuated between 3 and 10 nT, peaking around 00:00 UT this morning. The Bz component has fluctuated between -6 and +8 nT. Geomagnetic conditions ranged between Kp index 0-4 (NOAA) and local K index 0-5 (Dourbes) over the past 24 hours. The enhanced solar wind speed and negative Bz this morning resulted in a peak in geo-magnetic conditions (K=5). A small transient coronal hole has just passed the central meridian and will enhance solar wind speeds in a couple of days. Geomagnetic conditions are expected to be quiet to unsettled.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 016, sur la base de 11 stations.

Indices solaires pour 24 Nov 2017

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	074
AK Chambon La Forêt	025
AK Wingst	014
Ap estimé	013
Nombre international de taches solaires estimé	000 - Basé sur 23 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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