Affichage des archives de mercredi, 24 janvier 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Jan 24 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
24 Jan 2018	070	003
25 Jan 2018	069	003
26 Jan 2018	069	005

Bulletin

Solar activity was at very low levels. The Sun is spotless. 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.

Solar wind speed decreased from an initial 470 km/s to current values near 350 km/s (DSCOVR). Bz varied between -3 and +3 nT. The interplanetary magnetic field was directed towards the Sun until about 02UT, after which is was mainly directed away from the Sun. A diffuse extension of the northern polar coronal hole (CH) is transiting the central meridian.

The geomagnetic field was mostly at quiet levels and is expected to remain so, with a chance on an unsettled episode.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 07 stations.

Indices solaires pour 23 Jan 2018

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	071
AK Chambon La Forêt	005
AK Wingst	004
Ap estimé	004
Nombre international de taches solaires estimé	000 - Basé sur 22 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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