Affichage des archives de dimanche, 25 décembre 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Dec 25 1337 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
25 Dec 2016	072	022
26 Dec 2016	071	013
27 Dec 2016	071	009

Bulletin

Solar activity was very low in the past 24 hours. No flares, no coronal mass ejections were observed. One NOAA Halpha plages 2619 and one NOAA active region (AR) 2620 are rotating across the west solar limb, while one returning NOAA AR is expected to appear at the east solar limb in the next 24 hours. Solar protons have remained at background levels. Solar activity is expected to remain low over the next 24 hours with a small chance of B-class flares. The solar wind speed was stable over the past 24 hours, varying around 630 km/s. The total magnetic field strength has fluctuated between 7.5 nT and 4.5 nT. The Bz component has fluctuated between -6 nT and +7 nT. Geomagnetic conditions were ranged between Kp index 2-4 (NOAA) and local K index 1-4 (Dourbes), with the singular enhance value from Dourbes K=4 (starting at 12:00 UT today, 25-12-2016). The solar wind variations are still enhanced due to the fast solar wind stream from the coronal hole, as a consequence geomagnetic conditions are expected to be active to unsettled to for the next two days (Kp index <= 4). A minor storm (Kp = 5) is not excluded.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 12 stations.

Indices solaires pour 24 Dec 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	073
AK Chambon La Forêt	025
AK Wingst	015
Ap estimé	015
Nombre international de taches solaires estimé	000 - Basé sur 16 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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