Affichage des archives de lundi, 17 juin 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Jun 17 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
17 Jun 2019	065	012
18 Jun 2019	066	018
19 Jun 2019	066	008

Bulletin

Solar activity was at very low levels. The Sun remains spotless. No Earth directed coronal mass ejections (CMEs) were observed over the last 24 hours in the available coronagraph imagery. The greater than 10 MeV proton flux was at nominal values. Solar activity is expected to remain at very low levels.

Over the past 24 hours, the solar wind speed decreased from 410 to 320 km/s (DSCOVR). Bz varied between -3 and +2 nT. The interplanetary magnetic field was predominantly directed away from the Sun (positive sector). Quiet to unsettled geomagnetic conditions were observed, with the Kp index ranging between 0-1 (NOAA) and the local K index (Dourbes) ranging between 0-3 over the past 24 hours.

Unsettled to active geomagnetic conditions are expected from late on 17 June/early on 18 June due to the arrival of the solar wind streams associated with the series of fragmented negative polarity coronal holes, which first began to transverse the central meridian on 13 June. A chance of an episode of minor storm conditions in the next few days is also not excluded.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 22 stations.

Indices solaires pour 16 Jun 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	066
AK Chambon La Forêt	007
AK Wingst	004
Ap estimé	004
Nombre international de taches solaires estimé	000 - Basé sur 30 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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