Affichage des archives de mardi, 12 février 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Feb 12 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
12 Feb 2019	070	007
13 Feb 2019	069	015
14 Feb 2019	070	010

Bulletin

The solar activity has been quiet over the past 24 hours. The visible solar disc was spotless and the X-ray flux remained below B-class level. Quiet conditions are expected to continue over the next 24 hours.

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 and is expected to remain so.

The solar wind speed has fluctuated between 340 and 420 km/s over the past 24 hours. The total magnetic field strength fluctuated between 1.6 and 9.3 nT, where the Bz component fluctuated between -6.4 and +8 nT. Slightly enhanced solar wind conditions are expected over the next 24 hours due to the influence of the extended southern polar coronal hole, which crossed the central meridian on the 10th February.

The geomagnetic conditions have been unsettled with an isolated active period (observed by Dourbes) over the past 24 hours, with the Kp (NOAA) and the local K (Dourbes) indices ranging between 1-3 and 1-4, respectively. Over the next 24 hours the geomagnetic conditions are expected to be quiet to unsettled, with the possibility for isolated active periods as the influence of the enhanced solar wind speed from the extended southern polar coronal hole is expected begin to influence the Earth on the 13th February.

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

Indices solaires pour 11 Feb 2019

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	070
AK Chambon La Forêt	017
AK Wingst	///
Ap estimé	009
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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