Affichage des archives de samedi, 2 mai 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 May 02 1230 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
02 May 2015	105	010
03 May 2015	110	011
04 May 2015	115	011

Bulletin

Flaring activity was very low. A few rather narrow CMEs were observed in SOHO/LASCO C2 images, but all seem to have no Earth-directed component. One CME (first measurement at 22:24 UT) was related to activity at the West limb, while another one (first measurement at 7:48 UT) was due to an eruption at the East limb. H alpha images indicate that a few filaments, located in the southern hemisphere, are getting unstable and might erupt in the next few days. Flaring at the C-level is possible (chance of 30%). Solar wind speed is in the 400-500 km/s range. The magnitude of the Interplanetary Magnetic Field (IMF) is between 8 and 13 nT. The quiet to unsettled (K=0 to 3) geomagnetic conditions are expected to continue, with some chance for geomagnetic active levels (K=4).

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 020, sur la base de 15 stations.

Indices solaires pour 01 May 2015

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	100
AK Chambon La Forêt	012
AK Wingst	005
Ap estimé	005
Nombre international de taches solaires estimé	015 - Basé sur 19 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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