Affichage des archives de mercredi, 23 décembre 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Dec 23 1230 UTC

Prévisions SIDC

Éruptions solaires

M-class flares expected (probability >=50%)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
23 Dec 2015	135	007
24 Dec 2015	135	006
25 Dec 2015	135	006

Bulletin

There are currently five sunspot groups visible, as identified by Catania. The most interesting group is Catania group 5 (NOAA 2473), which produced an M4.7 flare (peaking at 0:40 UT today) and two C-class flares during the past 24 hours. The M4.7 flare was associated with a dimming, a type II radio burst and an eastward CME. The CME had an apparent width of 70 degrees and an estimated projected speed of 530 km/s (as reported by CACTus). First analysis indicates that no influence on the Earth environment should be expected. Flaring at the M-level is expected to continue, in particular from the Catania group 5, with a slight chance for an X-class flare. The solar wind speed is varying between 400 and 500 km/s. The interplanetary magnetic field (IMF) magnitude is below 10 nT, with a fluctuating Bz component. Quiet to unsettled conditions (K < 4) were noted by Dourbes and NOAA. These geomagnetic conditions are expected to continue.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 063, sur la base de 14 stations.

Indices solaires pour 22 Dec 2015

Nombre de Wolf, observé par Catania	082
Flux solaire à 10 cm	130
AK Chambon La Forêt	017
AK Wingst	013
Ap estimé	012
Nombre international de taches solaires estimé	069 - Basé sur 16 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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