Affichage des archives de lundi, 13 avril 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Apr 13 1231 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
13 Apr 2020	070	005
14 Apr 2020	070	007
15 Apr 2020	070	007

Bulletin

The Sun was spotless. Solar activity was at very low levels and is expected to remain so.

The greater than 10 MeV proton flux and the greater than 2 MeV electron flux were at nominal values and are expected to remain so.

No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery.

Solar wind speed declined slightly from its initial values around 450 km/s to vary between 390 and 430 km/s during most of the period (DSCOVR). Bz varied between -4 and + 4 nT. The direction of the interplanetary magnetic field (phi angle) started out variable, but turned to mostly sunward directions (negative sector) after 21UT.

Geomagnetic activity was at quiet to unsettled levels and is expected to remain so during the next few days, as the earth environment may encounter the slightly enhanced wind streams from some small and patchy coronal holes.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 22 stations.

Indices solaires pour 12 Apr 2020

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	071
AK Chambon La Forêt	012
AK Wingst	008
Ap estimé	007
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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