Affichage des archives de samedi, 12 janvier 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Jan 12 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
12 Jan 2019	068	005
13 Jan 2019	068	019
14 Jan 2019	068	007

Bulletin

The solar activity has been quiet over the past 24 hours. The X-ray flux remains below B-level, and the visible solar disc is spotless. Solar activity is expected to remain at low levels.

No Earth directed Coronal Mass Ejection has been observed. The greater than 10 MeV solar protons flux remained at nominal levels over the past 24 hours and is expected to remain so.

The influence of the coronal hole that transited the central meridian on Jan 8 is weakening. The solar wind speed decreased from around 470 km/s to the current values around 380 km/s. Total interplanetary magnetic field strength was below 6.8 nT. The southward magnetic component remained between -4.1 and 4.1 nT. The influence of the equatorial coronal hole that has reached the central meridian on Jan 9 is expected to re-enhance the solar wind parameters on Jan 13.

The geomagnetic conditions were quiet and are expected to remain quiet until the arrival of the coronal hole influences on the solar wind measurements near Earth on Jan 13. Possible isolated minor storm conditions may be observed, in particular, if the Bz component stays negative for longer periods.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 03 stations.

Indices solaires pour 11 Jan 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	068
AK Chambon La Forêt	006
AK Wingst	007
Ap estimé	005
Nombre international de taches solaires estimé	000 - Basé sur 15 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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