Affichage des archives de lundi, 4 décembre 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Dec 04 1233 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
04 Dec 2017	069	006
05 Dec 2017	069	043
06 Dec 2017	069	037

Bulletin

The solar activity remained very quiet. The visible solar disc is spotless and no flare has been recorded in past 24-hour. Quiet flaring conditions are expected.

No Earth directed Coronal Mass Ejection has been observed. The solar protons flux (greater than 10 MeV) remained at nominal levels over the past 24 hours and is expected to remain so.

Solar wind conditions were at nominal levels: The speed of the solar wind was around 300 and 350 km/s; the interplanetary magnetic field magnitude was below 6 nT over the last period except at 04:42 on Dec 4 it reached 9.2 nT; the Bz component of the magnetic field globally varied between +5 nT and -5 nT and reached -7.8 nT at 04:45 on Dec 4. The high speed stream associated with the extension of the northern polar Coronal Hole that has transited the central meridian on Nov 31 is expected to reach Earth with in this period.

The geomagnetic conditions were at the nominal level with K-Dourbes and Kp ranging between 0 and 2. The geomagnetic activity is expected to be unset to active with to arrival of the high speed stream by the end of this period.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 14 stations.

Indices solaires pour 03 Dec 2017

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	070
AK Chambon La Forêt	004
AK Wingst	001
Ap estimé	002
Nombre international de taches solaires estimé	000 - Basé sur 15 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

<< Aller à l'aperçu quotidien