Affichage des archives de lundi, 8 décembre 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Dec 08 1211 UTC

Prévisions SIDC

Éruptions solaires

Eruptive (C-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
08 Dec 2014	140	006
09 Dec 2014	145	007
10 Dec 2014	150	007

Bulletin

The background of the Xray flux (measured by GOES) is currently at the higher B-level. Only 3 minor C-class flares were observed, originating from NOAA AR 2222 (Catania group 24) and 2231 (no Catania number yet). NOAA 2231 emerged yesterday and developed to a beta region. Flaring at the lower C-level is expected. As NOAA 2222 is approaching the west limb, despite the reduced flaring potential, an eruption might still be accompanied by an increased solar proton flux. No Earth directed CMEs were observed. The Earth is still inside a fast flow, but with decreasing solar wind speed values (from 800 to 600 km/s, measured by ACE). The interplanetary magnetic field has a magnitude between 3 and 7 nT with a fluctuating Bz component. Yesterday afternoon (UT time), active to minor storm conditions were reached (to 5 for local K at Dourbes and estimated NOAA Kp) due to the arrival of a coronal hole high speed stream. K returned to quiet conditions again. Quiet to unsettled magnetic conditions are expected.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 043, sur la base de 11 stations.

Indices solaires pour 07 Dec 2014

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	132
AK Chambon La Forêt	037
AK Wingst	031
Ap estimé	031
Nombre international de taches solaires estimé	042 - Basé sur 09 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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