Affichage des archives de jeudi, 15 décembre 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Dec 15 1259 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

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

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
15 Dec 2016	072	004
16 Dec 2016	070	014
17 Dec 2016	069	006

Bulletin

There are presently two numbered sunspot groups on the visible side of the solar disc, the newly emerged NOAA AR 2618, and NOAA AR 2617 which is rotating across the west solar limb. The only reported flare during last 24 hours was B2.5 flare from NOAA AR 2617, which peaked at 03:30 UT today. We expect solar activity to remain on the same low level, with very small probability for isolated C-class flare. No Earth directed CMEs were observed in the last 24 hours. The solar wind speed is still decreasing and it presently amounts about 410 km/s, and the interplanetary magnetic field magnitude remained at the same level of about 4nT. The fast solar wind associated with the small coronal holes which reached the central meridian in the morning of December 12 and 13 is expected to arrive at the Earth today and tomorrow, respectively. The geomagnetic conditions are presently quiet. We expect unsettled to active conditions starting later today, due to arrival of the fast solar wind.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 012, sur la base de 17 stations.

Indices solaires pour 14 Dec 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	072
AK Chambon La Forêt	006
AK Wingst	004
Ap estimé	003
Nombre international de taches solaires estimé	023 - Basé sur 22 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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