Affichage des archives de dimanche, 17 juin 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Jun 17 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
17 Jun 2018	071	007
18 Jun 2018	071	010
19 Jun 2018	071	016

Bulletin

Solar activity was very low with X-ray flux remaining below B level. Catania sunspot group 86 (NOAA active region 2713) almost fully decayed. Chances for C class flaring remain very low.

No Earth directed CMEs were observed in coronagraph images.

Solar proton flux levels were at background values and are expected to remain so.

Solar wind conditions have been nominal with solar wind speed around 300 km/s and total magnetic field below 5 nT. The Bz component of the magnetic field was variable. The magnetic field phi angle indicates a negative sector connection. Solar wind conditions are expected to remain nominal in the next 24 hours with afterwards an expected sector change and a moderate increase in solar wind speed associated to the positive polarity coronal hole in the northern hemisphere that has passed the central meridian June 14-15.

Geomagnetic conditions were quiet to unsettled (local K Dourbes 0-3 and NOAA Kp 0-1) and are expected to first be quiet and later quiet to unsettled as solar wind speed becomes slightly increased.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 014, sur la base de 11 stations.

Indices solaires pour 16 Jun 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	071
AK Chambon La Forêt	006
AK Wingst	///
Ap estimé	003
Nombre international de taches solaires estimé	015 - Basé sur 21 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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