Affichage des archives de samedi, 19 janvier 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Jan 19 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
19 Jan 2019	069	006
20 Jan 2019	068	007
21 Jan 2019	068	007

Bulletin

Solar X-ray flux remained below B level throughout the period. The Solar disk is spotless and X-ray flux is expected to continue to be below C level.

No earth directed CMEs have been recorded.

The proton flux levels were at background values and are expected to remain so.

An equatorial positive polarity coronal hole is now starting to transit the central meridian.

Solar wind conditions have returned to nominal. Solar wind speed decreased steadily from around 480 km/s to around 400 km/s. Total magnetic field was below 5nT. The magnetic field phi angle was in the negative sector. Nominal Solar wind conditions are expected over the next days. The Solar wind sector change preceding the coronal hole that is now transiting the central meridian is not expected before January 22 and further associated Solar wind enhancements are only expected to set in January 23/24.

Geomagnetic conditions were quiet (local K Dourbes and NOAA Kp 0-2) and are expected to remain quiet over the next days.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 18 stations.

Indices solaires pour 18 Jan 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	069
AK Chambon La Forêt	009
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	000 - Basé sur 20 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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