Affichage des archives de jeudi, 18 janvier 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Jan 18 1230 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
18 Jan 2018	071	004
19 Jan 2018	071	010
20 Jan 2018	071	016

Bulletin

Over the past 24 hours solar activity has been quiet. No significant flares have been recorded. Active Region (AR) 2696 (Mcintosh class:Bxo; Mag. type:Beta) is the only region on the disk, producing a B9.7 class flare. Flaring activity from the region has been increasing. There are no other significant ARs on the solar disk. No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar activity is expected to remain low over the next 24 hours with a chance of C-class flares. The solar wind speed has fluctuated around 350 km/s over the past 24 hours. The total magnetic field strength has remained around 5 nT. The Bz component has been mainly positive ranging between -1 and +5 nT. Geomagnetic conditions ranged between Kp index 0-1 (NOAA) and local K index 0-1 (Dourbes) over the past 24 hours. Geomagnetic conditions are expected to be quiet, however a coronal hole is currently passing disk centre and may increase geomagnetic activity in 2-3 days.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 014, sur la base de 12 stations.

Indices solaires pour 17 Jan 2018

Nombre de Wolf, observé par Catania	020
Flux solaire à 10 cm	071
AK Chambon La Forêt	006
AK Wingst	001
Ap estimé	001
Nombre international de taches solaires estimé	017 - Basé sur 19 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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