Affichage des archives de lundi, 12 septembre 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Sep 12 1251 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

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

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
12 Sep 2016	086	012
13 Sep 2016	083	007
14 Sep 2016	081	004

Bulletin

Solar activity was very low in the past 24 hours. No flares, no Earth-directed CMEs were observed. Four active regions are presently observed on the visible side of the solar disc. Solar proton flux intensity is expected to lie within the background levels. Solar activity is expected to be low with some probability for C-class flares.

Solar wind parameters were at nominal values, with wind speed declining slightly from about 375 km/s to 330 km/s. The magnitude of the Interplanetary Magnetic Field (Bt) increased from +5 nT to 13 nT, while Bz increased from -4 nT till +12 nT during this morning (12-Sep-2016) due to the weak influence of a positive polarity coronal hole. The interplanetary magnetic field (IMF) was mostly directed away from the Sun (positive). In the past 24 hours, geomagnetic conditions have been quiet (K Dourbes between 1 and 3; NOAA Kp between 1 and 3). Active to minor geomagnetic storm conditions (K Dourbes = 3-4) are possible from today (12-Sep-2016) due to the increased variations of the solar wind parameters.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 057, sur la base de 24 stations.

Indices solaires pour 11 Sep 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	086
AK Chambon La Forêt	///
AK Wingst	004
Ap estimé	004
Nombre international de taches solaires estimé	067 - 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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