Affichage des archives de lundi, 7 mai 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 May 07 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
07 May 2018	068	017
08 May 2018	069	015
09 May 2018	069	008

Bulletin

Solar activity was at very low levels. Active region NOAA 2708 is currently the only sunspot group visible on the solar disk. The source region of the 3 May CME (farside) is about to rotate over 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.

Solar activity is expected to be at very low levels, with a slight chance on a C-class flare.

Earth is under the influence of the high speed stream (HSS) from an elongated negative polarity equatorial coronal hole (CH). Solar wind speed mostly undulated between 610 and 710 km/s (DSCOVR). Bz varied between -6 and +6 nT. The interplanetary magnetic field was mostly directed towards the Sun, with some "away" excursions from 07UT onwards. Mostly unsettled to active geomagnetic conditions were observed, with an isolated minor storming episode in the Kp index during the 21-24UT interval.

Quiet to active geomagnetic conditions are expected, with a chance on an isolated minor storming episode.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 015, sur la base de 23 stations.

Indices solaires pour 06 May 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	067
AK Chambon La Forêt	034
AK Wingst	026
Ap estimé	029
Nombre international de taches solaires estimé	015 - Basé sur 29 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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