Affichage des archives de mercredi, 9 décembre 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Dec 09 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
09 Dec 2015	105	014
10 Dec 2015	104	015
11 Dec 2015	103	010

Bulletin

The strongest flare, out of four C-class flares reported during last 24 hours, was C6.7 flare (peaked at 19:14 UT) on December 08. The flare originated from the NOAA AR 2463 and was associated with the EIT wave and the coronal dimming indicating the presence of the associated, possibly Earth directed CME. Due to the current unavailability of coronagraph data it is not possible to estimate CME width or speed, more will be reported as soon as coronagraph data become available. We expect C-class flares in the coming hours.

The solar wind speed has decreased to about 450 km/s, and the interplanetary magnetic field is stable with the magnitude of 5 nT. The geomagnetic conditions are quiet at the moment. We expect quite to active geomagnetic conditions this evening and tomorrow morning due to awaited arrival of the fast flow associated with the equatorial coronal hole (seemingly connected with the northern polar coronal hole) which has reached the central meridian late on December 06.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 072, sur la base de 17 stations.

Indices solaires pour 08 Dec 2015

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	111
AK Chambon La Forêt	014
AK Wingst	012
Ap estimé	012
Nombre international de taches solaires estimé	052 - Basé sur 21 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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