Affichage des archives de jeudi, 27 novembre 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Nov 27 1256 UTC

Prévisions SIDC

Éruptions solaires

Active (M-class flares expected, probability >=50%)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
27 Nov 2014	173	007
28 Nov 2014	175	010
29 Nov 2014	177	004

Bulletin

NOAA 2222 developed close to the southeast limb and is actively flaring. It was responsible for at least 10 C-class flares, including a C8.2 flare peaking at 00:47UT which was the strongest event of the observing period. Departing region NOAA 2209 was the only other region to produce a C-class flare. The other regions were quiet, with NOAA 2219 having some mixed polarities. The x-ray background flux increased from about B9 to nearly C2. A filament eruption was observed in the NW quadrant around 16:00UT on 26 November. A slow CME first observed in LASCO/C2 at 17:36 may have been associated to it. The other filaments were quiet. None of the observed CMEs are directed to Earth. Low-level M-class flares are possible. A sector boundary crossing (SBC) occurred around 03:00UT. IMF turned towards the Sun. Solar wind speed gradually increased from about 300 to 400 km/s. Bz varied between -7 and +9 nT, but was mostly positive after the SBC. The geomagnetic field was quiet. Geomagnetic conditions are expected to be quiet to unsettled, with an isolated active period not excluded.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 115, sur la base de 06 stations.

Indices solaires pour 26 Nov 2014

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	171
AK Chambon La Forêt	008
AK Wingst	003
Ap estimé	003
Nombre international de taches solaires estimé	091 - Basé sur 08 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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