Affichage des archives de jeudi, 17 septembre 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Sep 17 1231 UTC

Prévisions SIDC

Éruptions solaires

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
17 Sep 2015	114	018
18 Sep 2015	116	029
19 Sep 2015	118	018

Bulletin

NOAA 2415 developed a small delta structure just south of its middle main spot. This resulted in 12 C-class flares and 1 M-class flare. Notable events were a C9.5 flare peaking at 03:03UT, and the M1.1 flare peaking at 09:40UT. The other 3 regions were quiet. No earth-directed coronal mass ejections have been observed.

More C-class flares are expected, with a reasonable chance on another M-class flare from NOAA 2415.

Solar wind speed fluctuated mostly between 440 and 490 km/s, and is currently near 460 km/s. Bz oscillated between -6 and +5 nT, with the interplanetary magnetic field pointing away from the Sun. Quiet to unsettled conditions were observed, with active episodes around midnight.

Quiet to active geomagnetic conditions are expected. Minor geomagnetic storming is possible on 18 and/or 19 September in response to the arrival of the high speed stream of a transequatorial coronal hole.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 065, sur la base de 10 stations.

Indices solaires pour 16 Sep 2015

Nombre de Wolf, observé par Catania	093
Flux solaire à 10 cm	109
AK Chambon La Forêt	///
AK Wingst	016
Ap estimé	014
Nombre international de taches solaires estimé	078 - 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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