Affichage des archives de jeudi, 10 mai 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 May 10 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
10 May 2018	069	015
11 May 2018	069	007
12 May 2018	069	003

Bulletin

Solar activity was at very low levels. Small and inactive region NOAA 2709 (Catania 81) is currently the only visible sunspot region on the solar disk. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels.

Solar activity is expected to remain at very low levels.

Earth remained under the influence of the high speed stream (HSS) from an elongated negative polarity equatorial coronal hole (CH). Solar wind speed varied mostly between 560 and 610 km/s, with a short-lived peak near 670 km/s around 18UT (DSCOVR). Bz varied between -5 and +4 nT. The interplanetary magnetic field was mostly directed towards the Sun. Geomagnetic activity ranged from quiet to active levels.

Quiet to unsettled geomagnetic conditions are expected, with a chance on an isolated active interval.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 011, sur la base de 20 stations.

Indices solaires pour 09 May 2018

Nombre de Wolf, observé par Catania	025
Flux solaire à 10 cm	070
AK Chambon La Forêt	025
AK Wingst	019
Ap estimé	020
Nombre international de taches solaires estimé	021 - Basé sur 33 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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