Affichage des archives de samedi, 9 février 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Feb 09 1234 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
09 Feb 2019	071	013
10 Feb 2019	072	012
11 Feb 2019	071	007

Bulletin

The solar activity has been quiet over the past 24 hours. The visible solar disc was spotless, and the X-ray flux remained below B-level. Flaring conditions 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 solar wind speed ranged between 420 and 495 km/s over the past 24 hours. The total interplanetary magnetic field strength reached about 7.5 nT, and the southward magnetic component fluctuated between -6 and 6.3 nT. The solar wind parameters are expected to continue to be enhanced due to the solar wind streams associated with the patchy coronal hole (of negative polarity) that reached the central meridian on Feb 4.

With the arrival of the streams associated with the coronal hole, active geomagnetic conditions were observed. The Kp index ranged between 1-4 (NOAA) and the local K index 1-3 (Dourbes). The conditions are expected to remain unsettled with possible short periods of active conditions.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 20 stations.

Indices solaires pour 08 Feb 2019

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	071
AK Chambon La Forêt	018
AK Wingst	012
Ap estimé	010
Nombre international de taches solaires estimé	000 - Basé sur 18 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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