Affichage des archives de mardi, 6 septembre 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Sep 06 1230 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
06 Sep 2016	094	013
07 Sep 2016	093	008
08 Sep 2016	092	004

Bulletin

NOAA 2585 is decaying and produced the only flare of the period (B3.0 peaking at 21:46UT). The other two sunspot regions (Catania 23 and 24) are small and inactive. The 40-degrees long filament in the northwest quadrant remained quiet. The coronal mass ejection (CME) associated with the prominence eruption early on 06 September (07:30-09:00UT; southwest limb) was not directed to Earth.

C-class flares are possible, with a small chance on an isolated M-class event.

Solar wind speed continued its gradual decline from about 580 km/s to its current value around 520 km/s. Bz fluctuated between -6 and +4 nT, with a sustained negative period near -5 nT from 15-19UT. The interplanetary magnetic field (IMF) was directed away from the Sun (positive). Mostly quiet to unsettled geomagnetic conditions were reported, with an isolated minor storming episode during the 18-21UT interval.

Quiet to active geomagnetic conditions are expected, with still a small chance on a minor storming episode. Geomagnetic conditions are expected to return to mostly quiet levels over the next few days in view of the gradually waning effects of the coronal hole high speed stream.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 043, sur la base de 12 stations.

Indices solaires pour 05 Sep 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	094
AK Chambon La Forêt	031
AK Wingst	019
Ap estimé	021
Nombre international de taches solaires estimé	031 - Basé sur 26 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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