Affichage des archives de vendredi, 28 novembre 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Nov 28 1227 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
28 Nov 2014	182	007
29 Nov 2014	184	006
30 Nov 2014	186	007

Bulletin

NOAA 2222 has increased its sunspot area, but somewhat simplified its magnetic configuration, resulting in only 3 low-level C-class flares. To the southwest of this region, Catania 22 produced the strongest flare of the last 24 hours (C7.5 peaking at 00:40UT). The other sunspot regions were quiet, with NOAA 2219 still having some mixed polarities. The x-ray background flux has decreased to the C1 level. A filament eruption occurred between 04:45 and 05:45UT near and to the NW of NOAA 2222. The associated CME became first visible in LASCO/C2 at 05:48UT. It is not Earth-directed, like the other CMEs observed over the last 24 hours. C-class flaring is expected, with a chance on a low-level M-class flare. Solar wind speed gradually declined and varied between 400 and 350 km/s. The IMF is directed towards the Sun, with Bz mostly positive and varying between -10 and +10 nT. The geomagnetic field was quiet to unsettled (K<4) and is expected to remain so.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 104, sur la base de 10 stations.

Indices solaires pour 27 Nov 2014

Nombre de Wolf, observé par Catania	215
Flux solaire à 10 cm	179
AK Chambon La Forêt	011
AK Wingst	009
Ap estimé	008
Nombre international de taches solaires estimé	106 - Basé sur 15 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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