Affichage des archives de samedi, 26 janvier 2013

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2013 Jan 26 1253 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

Quiet

	Flux de 10 cm	Ap
26 Jan 2013	099	013
27 Jan 2013	097	017
28 Jan 2013	099	005

Bulletin

Catania sunspot groups 70 and 72 (NOAA ARs 1660 and 1661 respectively), as well as yet unnumbered sunspot group that emerged close to the east limb yesterday evening, have a potential to produce a C-class flare. Three flares stronger than B5 were produced in Catania sunspot groups 70 and 72 during the last 24 hours. A C-class flare is therefore possible. The Earth is currently inside a fast (around 500 km/s) solar wind flow with elevated (around 10 nT) interplanetary magnetic field magnitude. Active geomagnetic conditions (K = 4) were reported by NOAA and IZMIRAN, and unsettled conditions (K = 3) were reported by Dourbes. More intervals of active geomagnetic conditions are possible, especially after the arrival of the ICME-driven shock that is expected late today - early tomorrow.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 042, sur la base de 07 stations.

Indices solaires pour 25 Jan 2013

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	101
AK Chambon La Forêt	020
AK Wingst	006
Ap estimé	006
Nombre international de taches solaires estimé	032 - Basé sur 13 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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