Affichage des archives de mardi, 11 décembre 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Dec 11 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
11 Dec 2018	071	010
12 Dec 2018	070	012
13 Dec 2018	069	007

Bulletin

Solar activity has been quiet over the past 24 hours. There are no significant Active Regions on the solar disk. Flaring conditions are expected to remain quiet with a very small change of C-class flares.

No Earth directed Coronal Mass Ejection have been observed. The greater than 10 MeV solar protons flux remained at background levels over the past 24 hours and are expected to remain so.

The solar wind speed has been slowly decreasing from around 650 to 525 km/s over the past 24 hours. The total magnetic field strength has fluctuated around 5 nT. The Bz component was largely positive, fluctuating between -5 and +5 nT.

The elevated solar wind speeds were a consequence of a large Coronal Hole (which reached the central meridian on December 04). The enhanced solar wind conditions are beginning to abate but could still cause enhanced geomagnetic activity.

Geomagnetic conditions ranged between Kp index 1-3 (NOAA) and local K index 1-3 (Dourbes) over the past 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 012, sur la base de 16 stations.

Indices solaires pour 10 Dec 2018

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	071
AK Chambon La Forêt	013
AK Wingst	///
Ap estimé	011
Nombre international de taches solaires estimé	000 - Basé sur 26 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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