Affichage des archives de vendredi, 11 décembre 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Dec 11 1230 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
11 Dec 2015	110	018
12 Dec 2015	111	011
13 Dec 2015	110	008

Bulletin

There are currently seven numbered sunspot groups visible on the solar disc, majority of them having beta configuration of their photospheric magnetic field. The solar activity remains low with only one C-class flares reported during the last 24 hours. The long duration C1.4 flare, peaked at 04:47 UT this morning, originated from the NOAA AR 2468 currently situated close to the East solar limb. The SDO/AIA observations indicate presence of the associated CME, more will be reported as soon as coronagraph data become available. This was limb event and the associated CME is not expected to arrive at the Earth. No Earth directed CMEs were observed in the last 24 hours.

The Earth is still inside the fast solar wind with the speed of about 630 km/s. The peak of the wind speed of about 710 km/s was reached around midnight of December 10. The interplanetary magnetic field magnitude was fluctuating between 8 and 4 nT, mostly having the value of about 6 nT. The geomagnetic conditions are currently unsettled to active and we expected to remain so in the following hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 076, sur la base de 07 stations.

Indices solaires pour 10 Dec 2015

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	109
AK Chambon La Forêt	037
AK Wingst	028
Ap estimé	033
Nombre international de taches solaires estimé	075 - Basé sur 17 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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