Affichage des archives de dimanche, 22 novembre 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Nov 22 1327 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
22 Nov 2015	125	006
23 Nov 2015	127	007
24 Nov 2015	127	007

Bulletin

Solar flaring activity has been low but increasing. Several low class C flares occurred from Catania groups 77 and 80 (NOAA regions 2454 and 2457). The largest was an C5.6 flare peaking at 5:38 UT from Catania group 77 (NOAA 2454). Catania groups 77 and 80 (NOAA regions 2454 and 2457) showed further growth and development over the period while Catania group 78 (NOAA 2456) was decaying. Flaring is expected to continue at C level over the next period. A filament stretching over the SouthEastern hemisphere started lifting of around 7:00 UT but currently available coronagraph images do not yet allow to assess any possibly related CME. No Earth directed CME's have been observed in coronagraph data over the period. Solar wind speed further decreased from around 400 km/s to 350 km/s. Total magnetic field was below 6 nT and decreased to 4 nT currently, with Bz variable and above -3.5 nT. Geomagnetic conditions were quiet (local K Dourbes 0-2, NOAA Kp 0-1). Nominal solar wind conditions and quiet geomagnetic conditions are expected to continue.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 074, sur la base de 12 stations.

Indices solaires pour 21 Nov 2015

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	122
AK Chambon La Forêt	///
AK Wingst	///
Ap estimé	004
Nombre international de taches solaires estimé	057 - Basé sur 19 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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