Affichage des archives de samedi, 4 octobre 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Oct 04 1234 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
04 Oct 2014	130	009
05 Oct 2014	125	010
06 Oct 2014	121	010

Bulletin

Four low-level C-class flares were recorded. The strongest was a C1.9 peaking at 22:15UT and produced by NOAA 2172 from behind the west limb. The x-ray background flux has decreased below the C1-level. There are currently 8 sunspot groups visible on the solar disk. Most of them are fairly simple, and contain a filament or are close to one. Further C-class flaring is expected. A 20-degrees long, thin, but dynamical s-shaped filament has rounded the southeast limb. This area seems to have been responsible for a filament eruption on 03 October between 03:00 and 04:30UT. The associated CME was not directed to Earth. Solar wind speed increased from about 330 to 370 km/s. Bz was initially fluctuating around 0 nT untill about 05:00UT, when it gradually increased to the current +10 nT. Geomagnetic conditions were quiet to unsettled, and are expected to remain so, with locally an active episode possible.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 079, sur la base de 12 stations.

Indices solaires pour 03 Oct 2014

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	137
AK Chambon La Forêt	006
AK Wingst	005
Ap estimé	004
Nombre international de taches solaires estimé	092 - Basé sur 26 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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