Affichage des archives de samedi, 14 novembre 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Nov 14 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
14 Nov 2020	081	005
15 Nov 2020	080	004
16 Nov 2020	080	003

Bulletin

Solar activity was at very low levels. NOAA 2781 (Catania 50) was the source of a B7 flare peaking at 23:59UTC. NOAA 2782 (Catania 52) decayed further and lost most of its spots. Old active region NOAA 2778 is about 1 day behind the southeast imb. Solar activity is expected to be at very low levels, with a small chance on an isolated C-class flare. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels and is expected to remain so. The greater than 2 MeV electron flux was well below the 1000 pfu alert threshold and is expected to remain so. The 24h electron fluence was at nominal levels and is expected to remain so.

Solar wind speed was on a generally declining trend, varying between 400 and 320 km/s (DSCOVR). Bz varied between -4 and +4 nT. The interplanetary magnetic field (phi angle) was predominantly directed towards the Sun (negative sector).

Geomagnetic activity was at quiet levels. Geomagnetic conditions are expected to be at quiet levels, with a small chance on an unsettled episode.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 020, sur la base de 16 stations.

Indices solaires pour 13 Nov 2020

Nombre de Wolf, observé par Catania	025
Flux solaire à 10 cm	082
AK Chambon La Forêt	005
AK Wingst	004
Ap estimé	002
Nombre international de taches solaires estimé	022 - Basé sur 20 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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