Affichage des archives de jeudi, 28 novembre 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Nov 28 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
28 Nov 2019	071	005
29 Nov 2019	071	005
30 Nov 2019	070	003

Bulletin

Solar activity was at very low levels. The Sun was spotless once again. No earth-directed coronal mass ejections (CMEs) have been observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal values.

Solar activity is expected to remain at very low levels.

Solar wind speed evolved in a generally declining trend, from about 400 km/s at the beginning to 330 km/s at the end of the period (ACE). Bz varied between -4 and +3 nT. Solar wind parameters reflected a Sector Boundary Crossing (SBC) around 05:30UTC, with the direction of the interplanetary magnetic field (phi angle) switching from mostly directed away from the Sun (positive sector) to predominantly towards the Sun (negative sector). Geomagnetic activity was at quiet levels (both Kp and K Dourbes).

Geomagnetic activity is expected to remain at quiet levels, with a chance on an unsettled interval.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 06 stations.

Indices solaires pour 27 Nov 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	072
AK Chambon La Forêt	010
AK Wingst	///
Ap estimé	007
Nombre international de taches solaires estimé	000 - Basé sur 07 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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