Affichage des archives de vendredi, 15 février 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Feb 15 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
15 Feb 2019	071	007
16 Feb 2019	072	007
17 Feb 2019	072	003

Bulletin

The solar activity has been quiet over the past 24 hours, with the X-ray flux remaining below B-class level. The probability of C-class flares occurring remains very low and 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.

Over the last 24 hours the solar wind began to slowly decrease from 530 to 450 km/s. The total magnetic field strength fluctuated around 4.0 nT, while the Bz component fluctuated between -3.0 and 3.5 nT. The slightly enhanced solar wind conditions are expected to continue over the next 24 hours before gradually decreasing as the Earth leaves the influence of the solar wind stream associated with the extended southern polar coronal hole, which first crossed the central meridian on the 10th of February.

The geomagnetic conditions were quiet to unsettled over the last 24 hours, with the Kp (NOAA) and the local K (Dourbes) indices ranging between 0-3. The geomagnetic conditions are expected to continue to be unsettled as the enhanced solar wind associated with the extended southern polar coronal hole continues to influence the Earth over the coming hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 23 stations.

Indices solaires pour 14 Feb 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	071
AK Chambon La Forêt	016
AK Wingst	012
Ap estimé	013
Nombre international de taches solaires estimé	000 - Basé sur 29 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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