Affichage des archives de mercredi, 28 novembre 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Nov 28 1247 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
28 Nov 2018	067	004
29 Nov 2018	067	006
30 Nov 2018	066	008

Bulletin

There was no flaring activity reported during last 24 hours and we expect such a low level of activity to persist in the coming days. No Earth directed CMEs were reported during last 24 hours. The solar protons remained at the background level.

The slight increase of the interplanetary magnetic field magnitude (up to 7 nT) and simultaneous oscillations of its Bz component, together with the increase of the solar wind speed (up to 440 km/s) and the temperature, were observed starting from about 10 UT yesterday. These in situ observations indicate arrival of the structure in the solar wind, possibly associated with the small, negative polarity coronal hole which reached central meridian on November 23. The solar wind speed is incensing and it presently amounts about 390 km/s. The interplanetary magnetic field magnitude is about 4 nT. During last 24 hours geomagnetic conditions were quiet to unsettled, and we expect them to remain so in the coming hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 11 stations.

Indices solaires pour 27 Nov 2018

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	068
AK Chambon La Forêt	011
AK Wingst	007
Ap estimé	006
Nombre international de taches solaires estimé	000 - Basé sur 17 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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