Affichage des archives de mardi, 26 novembre 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Nov 26 1231 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
26 Nov 2019	070	005
27 Nov 2019	071	015
28 Nov 2019	070	008

Bulletin

Solar activity was at very low levels. The Sun was spotless. STEREO-A/EUVI images indicate a small active region developing just behind the east limb (as seen from Earth). No earth-directed coronal mass ejections (CMEs) have been observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal values.

Solar activity is expected to remain at very low levels.

Solar wind speed undulated between 470 and 370 km/s, showing a gradual decline and ending the period with values near 380 km/s (ACE). Bz varied between -3 and + 3 nT. The interplanetary magnetic field (phi angle) was mostly directed away from the Sun (positive sector). Kp and K Dourbes recorded quiet geomagnetic conditions, with a single unsettled episode by K Dourbes during the 21-24UT interval.

Geomagnetic activity is expected to remain mostly at quiet to unsettled levels. The earth environment is expected to become affected by the wind stream from a negative polarity coronal hole later today or tomorrow, increasing the possibility on an active episode.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 10 stations.

Indices solaires pour 25 Nov 2019

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	070
AK Chambon La Forêt	011
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	000 - Basé sur 24 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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