Affichage des archives de samedi, 5 août 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Aug 05 1230 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
05 Aug 2017	074	019
06 Aug 2017	074	007
07 Aug 2017	074	007

Bulletin

Solar activity was at very low levels in the past 24 hours, and is expected to remain at very low levels (no C flares) in the next 48 hours. No earth-directed Coronal Mass Ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels. Under the influence of the high speed stream from a positive coronal hole, solar wind speed registered by DSCOVR varied between about 600 and 790 km/s. The Interplanetary Magnetic Field (IMF) pointed away from the Sun and its magnitude decreased from about 14 to 4 nT. Bt varied between about -10 and 7 nT. Quiet to active geomagnetic conditions (K Dourbes between 2 and 4; NOAA Kp between 2 and 4) were registered in the past 24 hours. Active to minor storm conditions (K Dourbes = 4 to 5) are possible on August 5. Quiet to unsettled geomagnetic levels are expected on August 6 and 7.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 013, sur la base de 25 stations.

Indices solaires pour 04 Aug 2017

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	074
AK Chambon La Forêt	033
AK Wingst	024
Ap estimé	026
Nombre international de taches solaires estimé	013 - Basé sur 29 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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