Affichage des archives de dimanche, 14 septembre 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Sep 14 1231 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
14 Sep 2014	143	004
15 Sep 2014	141	005
16 Sep 2014	141	005

Bulletin

There are currently 6 sunspot groups visible on the solar disk. Eight low-level C-class flares and one M-class flare were observed during the period. The latter reached a maximum of M1.5 at 02:16UT, and originated in NOAA 2157. The CME associated to this event was first observed by LASCO at 03:12UT. It had a speed of about 350 km/s (CACTus), but has no Earth- directed component. NOAA 2157 and NOAA 2158 continue their decay. However, together with NOAA 2164, they have spots of opposite magnetic polarity close to each other. Hence, they may still produce an M-class flare. Filament eruptions observed around 16:30UT (northeast quadrant) and 20:00UT (south of NOAA 2163) were not related to earth-directed CMEs. M-class flares remain possible. Solar wind speed decreased from about 600 km/s to 500 km/s, while Bz decreased from +15 nT to a steady +6 nT. Geomagnetic conditions were quiet and are expected to remain so.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 070, sur la base de 10 stations.

Indices solaires pour 13 Sep 2014

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	145
AK Chambon La Forêt	015
AK Wingst	014
Ap estimé	014
Nombre international de taches solaires estimé	085 - Basé sur 21 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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