Affichage des archives de mercredi, 8 avril 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Apr 08 1231 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
08 Apr 2020	070	015
09 Apr 2020	069	011
10 Apr 2020	069	021

Bulletin

Solar activity was very low with X ray flux level remaining below B level. There are no spotted regions on disk and Solar flaring is expected to remain below C level over the next days.

No Earth directed Coronal Mass Ejections (CMEs) were observed in the available coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels over the past 24 hours and is expected to stay at nominal levels. The greater than 2 MeV electron flux was at background to moderate levels the past 24 hours and is expected to remain so.

Solar wind showed some enhancement since late yesterday, following a switch of the magnetic field phi angle into the positive sector. This possibly indicates connection with the Solar wind from the isolated equatorial coronal hole that passed central meridian April 1-3. Solar wind has meanwhile increased to around 410 km/s. Total magnetic field also became elevated reaching to 10nT, with a variable Bz component attaining peaks of down to -9.7nT. Solar wind conditions may remain slightly elevated over the next days but more significant enhancements are expected by April 11, due to the low latitude extension of the southern polar coronal hole currently transiting the central meridian.

Geomagnetic conditions were quiet to unsettled (NOAA Kp and local K Dourbes 0-3). Unsettled conditions are expected over the next days with possibly some isolated active periods. By April 11, active conditions are expected with possibly minor geomagnetic storm periods.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 26 stations.

Indices solaires pour 07 Apr 2020

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	070
AK Chambon La Forêt	011
AK Wingst	004
Ap estimé	004
Nombre international de taches solaires estimé	000 - Basé sur 36 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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