Affichage des archives de mercredi, 14 décembre 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Dec 14 1244 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
14 Dec 2016	071	006
15 Dec 2016	071	014
16 Dec 2016	072	013

Bulletin

Solar activity is extremely low, with no C-class flares reported since December 10. We expect solar activity to stay at the same level with the low probability for the isolated C-class flares. No Earth directed CMEs were observed in the last 24 hours.

The solar wind speed is slowly decreasing and it presently amounts about 470 km/s. The interplanetary magnetic field magnitude is about 4nT. The fast solar wind associated with the small equatorial coronal hole which reached the central meridian in the morning of December 12 is expected to arrive at the Earth in the midday of December 15. It might be closely followed in arrival time by the fast flow from the small coronal hole (between S08 and S12) which reached the central meridian early on December 13. The geomagnetic conditions are presently quiet. We expect unsettled to active conditions, due to expected arrival of the fast solar wind, starting from midday tomorrow.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 023, sur la base de 17 stations.

Indices solaires pour 13 Dec 2016

Nombre de Wolf, observé par Catania	014
Flux solaire à 10 cm	071
AK Chambon La Forêt	007
AK Wingst	005
Ap estimé	003
Nombre international de taches solaires estimé	014 - 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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