Affichage des archives de mercredi, 1 octobre 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Oct 01 1234 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

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

Moniteur de Flux de Proton

Warning condition (activity levels expected to increase, but no numeric forecast given)

	Flux de 10 cm	Ap
01 Oct 2014	155	015
02 Oct 2014	150	017
03 Oct 2014	147	017

Bulletin

Only one C-class flare was observed during the period. This C6.7 flare was located in NOAA 2172 and peaked at 03:06UT. The other 8 sunspot groups have been quiet. NOAA 2178 seems to be the most complex, with opposite magnetic polarities close to each other but no apparent delta structure. A CME first observed by LASCO at 08:48UT on 01 October was associated to a prominence eruption near the east limb. It is not Earth directed. The x-ray background flux is still above the C1-level. Two 20-degrees long filaments visible in the western solar hemisphere have remained quiet. C-class flaring is expected, with still a chance on an isolated M-class flare. Solar wind speed varied between 350 and 400 km/s, with peaks near 450 km/s. Bz fluctuated between -7 and +5 nT. A few isolated active periods were recorded. Geomagnetic conditions are expected to be quiet to unsettled, with isolated active periods possible.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 103, sur la base de 12 stations.

Indices solaires pour 30 Sep 2014

Nombre de Wolf, observé par Catania	185
Flux solaire à 10 cm	162
AK Chambon La Forêt	023
AK Wingst	014
Ap estimé	014
Nombre international de taches solaires estimé	/// - Basé sur /// 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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