Affichage des archives de mercredi, 13 novembre 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Nov 13 1230 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
13 Nov 2019	072	003
14 Nov 2019	073	004
15 Nov 2019	074	007

Bulletin

The solar activity has been at very low levels over the past 24 hours. A new small bipolar sunspot group (Catania sunspot group 23) is visible on the disc close to the East limb. No significant activity coming from this new spot has been recorded and the X-ray flux remained below B-level. Solar activity is expected to remain at low levels with a small chance of a C-class flare.

No earth-directed coronal mass ejections (CMEs) have been observed in the available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal values.

The solar wind parameters have slowly returned to nominal values: The total magnetic field is now fluctuating around 5 nT, the solar wind speed remains below 350 km/s, and the southern component of the magnetic filed is positive. The solar wind parameters are expected to remain at the nominal levels within the next 24 hours. A northern extension of the southern polar coronal hole (with negative polarity) stretching all the way to about 10 degree latitude has reached the central meridian. The effect of the coronal hole in the solar wind measurement at L1 is not expected earlier than in 3-4 days from now.

Quiet geomagnetic conditions were observed over the past 24 hours, and is expected to remain so for the next period.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 14 stations.

Indices solaires pour 12 Nov 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	071
AK Chambon La Forêt	005
AK Wingst	004
Ap estimé	003
Nombre international de taches solaires estimé	000 - 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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