Affichage des archives de lundi, 3 septembre 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Sep 03 1230 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
03 Sep 2018	068	004
04 Sep 2018	068	005
05 Sep 2018	068	004

Bulletin

Solar activity was at very low levels. No earth-directed coronal mass ejections (CMEs) were observed. A weak CME visible between 18 and 24UT on 2 September (LASCO) proved to be directed away from Earth based on STEREO-A coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels. A small negative polarity coronal hole is about to start its transit of the Central Meridian.

Solar activity is expected to remain at very low levels.

Solar wind speed varied between 310 and 360 km/s, ending the period near 330 km/s (DSCOVR). Bz varied mostly between -5 and +4 nT. The interplanetary magnetic field was initially directed towards the Sun, but moved to a more variable mode late on 2 September. Quiet geomagnetic conditions were observed.

Quiet geomagnetic conditions are expected to continue, with a chance on an isolated unsettled episode.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 19 stations.

Indices solaires pour 02 Sep 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	068
AK Chambon La Forêt	008
AK Wingst	008
Ap estimé	005
Nombre international de taches solaires estimé	000 - Basé sur 31 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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