Affichage des archives de mardi, 10 novembre 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Nov 10 1231 UTC

Prévisions SIDC

Éruptions solaires

C-class flares expected, (probability >=50%)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
10 Nov 2020	090	002
11 Nov 2020	089	002
12 Nov 2020	089	003

Bulletin

Solar activity was at very low levels. NOAA 2781 has now a simple magnetic configuration (beta) and continued its decay. A new sunspot group has rounded the southeast limb (S32E85). Both regions have been quiet. Solar activity is expected to be at low levels, in view of a possible isolated C-class flare from any of the two active regions. 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 expected to remain so. The greater than 2 MeV electron flux remained below the 1000 pfu alert threshold and is expected to remain so. The 24h electron fluence is expected to remain at nominal levels.

Solar wind speed continued its overall decrease from initial values near 370 km/s to its current 330 km/s (DSCOVR). Bz varied between -3 and +5 nT, being mostly positive. The interplanetary magnetic field (phi angle) was directed towards the Sun (negative sector).

Geomagnetic activity was at quiet levels and is expected to remain so.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 024, sur la base de 14 stations.

Indices solaires pour 09 Nov 2020

Nombre de Wolf, observé par Catania	033
Flux solaire à 10 cm	090
AK Chambon La Forêt	003
AK Wingst	000
Ap estimé	001
Nombre international de taches solaires estimé	025 - Basé sur 25 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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