Affichage des archives de jeudi, 9 avril 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Apr 09 1233 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Minor storm expected (A>=30 or K=5)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
09 Apr 2015	106	020
10 Apr 2015	106	013
11 Apr 2015	106	007

Bulletin

Beta-delta region NOAA AR 2320 released one M flare and one C flare during the past 24 hours. The M1.4 flare peaked at 14:43 UT on April 8 and was associated to a dimming. No corresponding CME was observed in LASCO imagery. In the next 24 hours, M flaring is possible, with a slight chance for an X flare, especially from AR 2320. A small shock in the solar wind was observed by ACE around 1:10 UT on April 9. Solar wind speed jumped from about 340 to 370 km/s, while the Interplanetary Magnetic Field (IMF) magnitude jumped from about 4 to 6 nT and the solar wind density from 3 to 8 particles/cc. This is possibly related to the arrival of the partial halo CME of April 4. A second shock in the solar wind was observed by ACE around 9:12 UT. Solar wind speed jumped from about 350 to 380 km/s, while the magnitude of the IMF jumped from about 6 to 10 nT. This is possibly related to a glancing blow from the CME of April 6. Over the past 24 hours, geomagnetic conditions have been quiet (K Dourbes between 1 and 3; NOAA Kp between 1 and 3). There is a chance for active to minor storm geomagnetic levels (K Dourbes = 4-5) on April 9 as a result of a glancing blow from the CME of April 6. Quiet to active geomagnetic activity is possible on April 10 and 11, as a new coronal hole high speed stream is expected to arrive near Earth.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 037, sur la base de 17 stations.

Indices solaires pour 08 Apr 2015

Nombre de Wolf, observé par Catania	044
Flux solaire à 10 cm	106
AK Chambon La Forêt	010
AK Wingst	005
Ap estimé	004
Nombre international de taches solaires estimé	033 - Basé sur 25 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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