Affichage des archives de jeudi, 11 décembre 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Dec 11 1228 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
11 Dec 2014	155	008
12 Dec 2014	160	006
13 Dec 2014	165	005

Bulletin

Six C-class flares were measured during the past 24 hours. The strongest event was a C5.9 flare, peaking at 15:10 UT on December 10, originating from a filament region slightly west of NOAA 2230 (Catania 30). The associated CME is believed to be too narrow and directed to the South. Two other C-class flares erupted from new active region 2234 (no Catania number yet) which developed to a beta region. No geo-effective CME was observed in coronagraphic imagery. Flaring activity at the C-level is expected. A coronal hole with central location at N25E0 is passing the central meridian and is expected to cause the arrival of a high speed stream on December 14. Solar wind speed is gradually decreasing from 500 to about 400 km/s and the magnitude of the interplanetary magnetic field is relatively stable around 5 nT. The geomagnetic conditions were mostly quiet, with a time slot of active conditions (K=4 at Dourbes, 6-9 UT December 11). The NOAA estimated Kp remained below K=4 for the whole period. Quiet to unsettled conditions (K<4) are expected for the next 48 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 080, sur la base de 07 stations.

Indices solaires pour 10 Dec 2014

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	150
AK Chambon La Forêt	009
AK Wingst	010
Ap estimé	008
Nombre international de taches solaires estimé	064 - Basé sur 18 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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