Affichage des archives de mercredi, 9 mai 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 May 09 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
09 May 2018	070	011
10 May 2018	070	010
11 May 2018	069	005

Bulletin

Solar activity was at very low levels. Active region NOAA 2708 regained some sunspot area, while NOAA 2709 (Catania 81) was stable. 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 620 and 700 km/s, and was at values near 620 km/s by the end of the period (DSCOVR). Bz varied between -6 and +5 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 : 023, sur la base de 22 stations.

Indices solaires pour 08 May 2018

Nombre de Wolf, observé par Catania	022
Flux solaire à 10 cm	070
AK Chambon La Forêt	027
AK Wingst	017
Ap estimé	018
Nombre international de taches solaires estimé	020 - Basé sur 32 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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