Affichage des archives de lundi, 24 décembre 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Dec 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 Dec 2018	070	003
25 Dec 2018	070	003
26 Dec 2018	070	003

Bulletin

Solar activity was at very low levels. The Sun was spotless. A small eruption with coronal dimming was observed on 24 December around 06:25UT in a region about 30 degrees beyond the east limb (Farside; STEREO-A/EUVI). The associated coronal mass ejection (CME) was not directed to Earth. No other coronal mass ejections were observed over the last 24 hours. The greater than 10 MeV proton flux was at nominal values. A narrow extension of the positive polarity northern polar coronal hole (CH) has started its transit of the central meridian.

Solar activity is expected to remain at very low levels.

Solar wind speed varied mostly between 300 and 350 km/s (DSCOVR). Bz ranged from -3 to +3 nT, ending the period at +5 nT. The interplanetary magnetic field was predominately directed towards the Sun (negative sector). Quiet geomagnetic conditions were observed.

Quiet geomagnetic conditions are expected to continue, with a small chance on an isolated unsettled interval.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 13 stations.

Indices solaires pour 23 Dec 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	070
AK Chambon La Forêt	005
AK Wingst	002
Ap estimé	002
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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