Affichage des archives de dimanche, 26 octobre 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Oct 26 1412 UTC

Prévisions SIDC

Éruptions solaires

Major flares expected (X-class flares expected, probability >=50%)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

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

	Flux de 10 cm	Ap
26 Oct 2014	220	012
27 Oct 2014	220	012
28 Oct 2014	218	007

Bulletin

In the past 24 hours, Catania sunspot group 88 (NOAA AR 2192) produced two X-class flares: X1.0 peaking at 17:08 UT yesterday and X2.0 peaking at 10:56 UT today. Neither of the flares seems to be associated with an Earth-directed CME. The area of the Catania sunspot group 88 increases again, and it maintains the beta-gamma-delta configuration of its photospheric magnetic field, so we expect the flaring activity up to X-level from this sunspot group. As the Catania sunspot group 88 is currently situated in the western solar hemisphere, a major eruption in this active region may lead to a proton event. A long filament in the northern hemisphere is continuing its passage across the solar central meridian. Its possible eruption may lead to an Earth-directed CME. The Earth is currently inside a slow (around 370 km/s) solar wind flow with slightly elevated (around 7 nT) interplanetary magnetic field magnitude. The geomagnetic conditions are quiet and are expected to remain so, with isolated intervals of active (K = 4) geomagnetic conditions possible but not very likely.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 096, sur la base de 10 stations.

Indices solaires pour 25 Oct 2014

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	///
AK Chambon La Forêt	///
AK Wingst	///
Ap estimé	///
Nombre international de taches solaires estimé	101 - Basé sur 17 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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