Affichage des archives de jeudi, 29 mars 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Mar 29 1230 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Minor storm expected (A>=30 or K=5)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
29 Mar 2018	070	016
30 Mar 2018	070	017
31 Mar 2018	070	016

Bulletin

There are no sunspot regions on the visible hemisphere of the Sun but the loops of a far side active region are rotating into view at the East limb. Flaring level is very low. The chance for a C flare in the next 24 hours is estimated at 10%, mainly from the region behind the East limb.

No Earth-directed Coronal Mass Ejections (CMEs) were observed in available coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours.

Solar wind speed measured by DSCOVR further decreased from about 430 to 340 km/s in the past 24 hours. The Interplanetary Magnetic Field (IMF) was predominantly directed towards the Sun and its magnitude varied between about 0 and 6 nT. There were no prolonged intervals with Bz below -5 nT.

Quiet geomagnetic conditions (K Dourbes between 0 and 2; NOAA Kp between 0 and 1) were registered in the past 24 hours. Due to the expected arrival of a high speed stream from a positive polarity, northern polar coronal hole, active geomagnetic levels (K Dourbes = 4) are possible on March 29, 30 and 31, with a chance for minor storm intervals (K Dourbes = 5).

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 17 stations.

Indices solaires pour 28 Mar 2018

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	069
AK Chambon La Forêt	004
AK Wingst	002
Ap estimé	002
Nombre international de taches solaires estimé	000 - Basé sur 15 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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