Affichage des archives de dimanche, 29 octobre 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Oct 29 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
29 Oct 2017	075	005
30 Oct 2017	074	007
31 Oct 2017	073	007

Bulletin

Quiet solar conditions were reported with the X-ray flux touching only briefly into the B level. Both active regions on disk are relatively simple (Mag.Type: Alpha) and quiet. The X-ray flux is expected to remain below C level. Proton flux levels were at background values and are expected to remain so. No Earth directed CME's were recorded in coronagraph data. A negative polarity low latitude coronal hole is starting its transit of the central meridian on the Southern hemisphere. It may influence Solar wind conditions starting 3 days from now.

Solar wind conditions were nominal with Solar wind speed decreasing to below 350 km/s while total magnetic field was mostly in a nominal 2-4nT range with the Bz component variable. The phi angle indicated connection to a positive sector. Nominal Solar wind conditions are expected over the next days. By noon November 1 the high speed stream from the southern, low latitude coronal hole and the sector boundary change preceding it could potentially enhance Solar wind conditions. Geomagnetic conditions were quiet (local K Dourbes 1, NOAA Kp 1-2) and are expected to remain so over the next days.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 024, sur la base de 15 stations.

Indices solaires pour 28 Oct 2017

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	075
AK Chambon La Forêt	010
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	025 - Basé sur 20 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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