Affichage des archives de jeudi, 11 juin 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Jun 11 1230 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Minor storm expected (A>=30 or K=5)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
11 Jun 2015	150	011
12 Jun 2015	160	020
13 Jun 2015	165	007

Bulletin

Solar activity has increased since the last bulletin. More than a dozen C-class flares and one M1.0 flare were observed by the GOES spacecraft. Almost every currently visible sunspot group contributed to this activity. The M1.0 flare, peaking at 8:55 UT on June 11 originated from a region that is currently turning to the Earth-facing side of the Sun. More flaring activity is to be expected, certainly at the C-level. Also an additional M-class flare is possible, mainly from the new region at the East limb (no NOAA number yet). The latest coronagraphic images indicate the occurrence of a CME propagating east of the Sun-Earth line, but more complete data are needed to analyse this.

The effects of the high speed stream are gradually decreasing. The solar wind speed is currently around 570 km/s and the interplanetary magnetic field magnitude obtains values below 5 nT. Geomagnetic conditions remain quiet to unsettled (K= 1 to 3), which is expected to continue for the next few hours. Geomagnetic activity might reach active to at most minor storm levels on June 12, depending on the potential arrival of the June 9 CME and the magnetic field properties.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 074, sur la base de 14 stations.

Indices solaires pour 10 Jun 2015

Nombre de Wolf, observé par Catania	136
Flux solaire à 10 cm	///
AK Chambon La Forêt	017
AK Wingst	014
Ap estimé	013
Nombre international de taches solaires estimé	074 - Basé sur 27 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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