Affichage des archives de lundi, 10 juin 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Jun 10 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
10 Jun 2019	068	005
11 Jun 2019	068	009
12 Jun 2019	068	021

Bulletin

Solar activity was at very low levels. No coronal mass ejections (CME) were observed over the last 24 hours. Analysis of STEREO-A coronagraphic imagery indicates that the slow and narrow CME from the 7 June filament eruption was mainly directed south of the ecliptic, making a geo-effective impact rather unlikely. The greater than 10 MeV proton flux was at nominal values. An extension from the positive polarity northern polar coronal hole (CH) transited the central meridian on 8 June. This extension is better defined than during its previous rotation.

Solar wind speed declined from about 410 km/s to its current values near 340 km/s. Bz varied between -4 and +3 nT. The direction of the interplanetary magnetic field (phi angle) was mostly directed towards the Sun. Quiet geomagnetic conditions were observed, with unsettled levels reached at Dourbes during the 15-18UT and 06-09UT intervals.

Quiet to unsettled geomagnetic conditions are expected to continue until the arrival of the CH wind stream late on 11 or on 12 June. Active conditions are then possible.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 25 stations.

Indices solaires pour 09 Jun 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	068
AK Chambon La Forêt	008
AK Wingst	008
Ap estimé	007
Nombre international de taches solaires estimé	000 - Basé sur 24 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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