Affichage des archives de jeudi, 17 janvier 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Jan 17 1231 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
17 Jan 2019	070	015
18 Jan 2019	070	011
19 Jan 2019	071	007

Bulletin

Solar X-ray flux remained below B level throughout the period. The sunspots that emerged yesterday in the North-Western quadrant were short lived and the Solar disk is again spotless. 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.

Solar wind was mostly nominal, slowly increasing to around 400 km/s until after 11:00 UT when it rose more suddenly to close to 490 km/s. Total magnetic field was first within 4-7nT before increasing to close to 10nT between 8:00 and 10:00 UT. Bz saw a longer period period with values down to -7nT before midnight but has been positive recently. These slight enhancements may continue over the next days.

Geomagnetic conditions were quiet to unsettled (local K Dourbes and NOAA Kp 0-3). Quiet conditions are expected over the next days with initially some unsettled periods possible.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 15 stations.

Indices solaires pour 16 Jan 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	070
AK Chambon La Forêt	013
AK Wingst	///
Ap estimé	007
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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