Affichage des archives de dimanche, 11 septembre 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Sep 11 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
11 Sep 2016	091	005
12 Sep 2016	087	011
13 Sep 2016	082	006

Bulletin

Only B-class flaring was observed, the strongest a B9.2 flare peaking at 19:22UT and produced by NOAA 2591. NOAA 2585, 2588 and 2589 are gradually decaying. No earth-directed coronal mass ejections (CME) have been observed.

A C-class flare is possible, with a small chance on an isolated M-class event.

Solar wind parameters were at nominal values, with wind speed declining slightly from about 390 km/s to 360 km/s. Bz fluctuated between -3 and +3 nT. The interplanetary magnetic field (IMF) was mostly directed away from the Sun (positive). Geomagnetic activity was at quiet levels, with Dourbes reporting an unsettled episode during the 21-24UT interval.

Quiet to unsettled geomagnetic conditions are expected, with a chance on active intervals should the moderate speed stream from a polar coronal hole extension arrive at the earth environment later today.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 067, sur la base de 14 stations.

Indices solaires pour 10 Sep 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	093
AK Chambon La Forêt	008
AK Wingst	004
Ap estimé	004
Nombre international de taches solaires estimé	081 - Basé sur 28 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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