Affichage des archives de jeudi, 27 septembre 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Sep 27 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
27 Sep 2018	068	008
28 Sep 2018	068	012
29 Sep 2018	068	011

Bulletin

Solar activity was very low with X-ray flux remaining below B level and no spots on the visible disk. This is expected to remain so over the next days.

This morning (September 27), a filament located around S26E11 erupted slowly, but available coronagraph images seem to indicate that there is no CME associated.

Proton flux levels were at background values and are expected to remain so.

Solar wind conditions were slowly moving towards the nominal regime. Solar wind speed saw a general decreasing trend from around 450 km/s to 410 km/s currently. Total magnetic field was 2-6nT with Bz variable. The magnetic field phi angle was in the positive sector. Solar conditions are expected to become and remain nominal over the next days.

Geomagnetic conditions were quiet to unsettled (NOAA Kp as well as local K Dourbes 1-3). Generally quiet conditions are expected over the next days with isolated unsettled conditions possible.

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

Indices solaires pour 26 Sep 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	069
AK Chambon La Forêt	012
AK Wingst	010
Ap estimé	008
Nombre international de taches solaires estimé	000 - Basé sur 34 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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