Affichage des archives de mercredi, 21 novembre 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Nov 21 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
21 Nov 2018	071	013
22 Nov 2018	071	017
23 Nov 2018	071	011

Bulletin

Solar X-ray flux remained below B level. With no regions on disk chances for C-class flaring are very low.

No Earth directed CMEs have been observed in coronagraph images.

Proton flux levels were at background values and are expected to remain so.

Solar wind speed declined over the period to be mainly in the 400-420 km/s range with lately a further decline to 390 km/s. Total magnetic field saw another period of slight enhancement reaching close to 10nT and now back at around 6nT. Bz was mostly positive and the phi angle was in the negative sector.. Slightly enhanced conditions are expected to continue over the next days related to the Southern coronal hole regions.

Geomagnetic conditions were quiet to unsettled (both local K Dourbes and NOAA Kp 0-3) and are expected to remain so over the next days.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 17 stations.

Indices solaires pour 20 Nov 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	071
AK Chambon La Forêt	007
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	000 - Basé sur 11 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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