Affichage des archives de samedi, 24 décembre 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Dec 24 1247 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
24 Dec 2016	073	012
25 Dec 2016	072	012
26 Dec 2016	071	011

Bulletin

Solar activity was very quiet in the past 24 hours. No flares, no coronal mass ejections were observed. There are no NOAA numbered active regions (ARs) observed on the visible side of the Sun. Two NOAA Halpha plages 2619 and 2620 are rotating across the west solar limb. Solar protons have remained at background levels over the past 24 hours. Solar activity is expected to remain low over the next 24 hours with a small chance of B-class flares. The solar wind speed has slightly decreased from 720 km/s to 620 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 6.5 nT and 3.5 nT. The Bz component has fluctuated between -4 nT and +4 nT. Geomagnetic conditions were ranged between Kp index 2-4 (NOAA) and local K index 1-5 (Dourbes) over the past 24 hours, with the singular enhance value from Dourbes K=5 (during 18-21 UT time slot yesterday, 23-12-2016). Enhanced solar wind variations are decreasing from this morning (00UT, 24-Dec-2016) and they are going to fade over the next couple of days. As a consequence geomagnetic conditions are expected to be active to unsettled to for the next couple of days (Kp index <= 4).

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

Indices solaires pour 23 Dec 2016

Nombre de Wolf, observé par Catania	011
Flux solaire à 10 cm	074
AK Chambon La Forêt	032
AK Wingst	021
Ap estimé	024
Nombre international de taches solaires estimé	000 - Basé sur 21 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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