Affichage des archives de dimanche, 15 septembre 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Sep 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 Sep 2019	069	008
16 Sep 2019	069	006
17 Sep 2019	070	011

Bulletin

There are no active regions visible on the disk. Solar activity has been very low over the past 24 hours, no significant flares have been recorded. No Earth directed CMEs have been observed in past 24 hours. The greater than 10MeV proton flux remained at background levels over the past 24 hours.

Solar activity is expected to remain low.

The solar wind speed fluctuated between approximately 410 and 490 km/s. The interplanetary magnetic field was predominantly directed away from the Sun (positive sector). The total magnetic field gradually increased over the period, recording values between 3 and 7 nT. The Bz fluctuated between -5 and +4 nT. Geomagnetic conditions have been quiet to unsettled over the past 24 hours, with the Kp index (NOAA) and the local k index (Dourbes) recording values between 1-3 and 1-2, respectively.

Quiet to unsettled conditions are expected to continue over the next 48 hours, with active conditions possible on the 17th due to the influence of the negative polarity coronal hole, which began to traverse the central meridian on Sept 13.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 21 stations.

Indices solaires pour 14 Sep 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	069
AK Chambon La Forêt	012
AK Wingst	007
Ap estimé	006
Nombre international de taches solaires estimé	000 - Basé sur 32 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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