Affichage des archives de lundi, 19 décembre 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Dec 19 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
19 Dec 2016	073	009
20 Dec 2016	074	010
21 Dec 2016	075	006

Bulletin

Solar activity was very quiet in the past 24 hours without C-class flares reported. There is only one NOAA active region (AR) 2619 observed on visible side of the solar disk with simple magnetic configuration. No Earth directed CMEs were observed in the past 24 hours. The northern polar coronal hole, which expanded to low latitudes, may disturb the geospace environment from today (19-Dec-2016). Solar proton flux intensity is expected to lie within the background levels. Solar activity is expected to be low with some probability for C-class flares. Variations of the solar wind parameters were low. Total Interplanetary Magnetic field (IMF) strength varied between 7 and 4 nT, while Bz varied between -4.4 and 5.5 nT. The solar wind speed decreased from 450 km/s till 380 km/s. Geomagnetic conditions were quiet (K Dourbes between 0 and 2; NOAA Kp between 1 and 2). The geomagnetic conditions are presently quiet to unsettled. We expect active conditions later today and tomorrow due to expected arrival of the fast solar wind associated with the low latitude extend of the northern polar coronal hole.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 026, sur la base de 09 stations.

Indices solaires pour 18 Dec 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	072
AK Chambon La Forêt	013
AK Wingst	009
Ap estimé	008
Nombre international de taches solaires estimé	033 - Basé sur 13 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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