Affichage des archives de mardi, 10 septembre 2013

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2013 Sep 10 1220 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
10 Sep 2013	092	005
11 Sep 2013	090	003
12 Sep 2013	092	005

Bulletin

No C-class flares were observed during the last days. Two sunspot groups are currently visible on the Sun according to the SDO/HMI data. Their small size makes a C-class flare in them unlikely. A filament eruption in the south-eastern quadrant of the solar disk was detected by SDO/AIA starting around 01:30 UT today. It was associated with the B4.1 flare peaking at 05:25 UT. The corresponding CME seems to be weak and narrow, so it is not expected to arrive at the Earth. A low-latitude coronal hole in the northern hemisphere reached the solar central meridian yesterday. It is, however, small, so the Earth will most probably only skim the edge of the corresponding fast flow on September 13. The Earth is currently inside a slow (around 340 km/s) solar wind flow with average (4-5 nT) interplanetary magnetic field magnitude. We expect quiet geomagnetic conditions in the coming hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 012, sur la base de 12 stations.

Indices solaires pour 09 Sep 2013

Nombre de Wolf, observé par Catania	025
Flux solaire à 10 cm	094
AK Chambon La Forêt	006
AK Wingst	004
Ap estimé	003
Nombre international de taches solaires estimé	009 - Basé sur 14 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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