Affichage des archives de jeudi, 13 février 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Feb 13 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
13 Feb 2020	071	004
14 Feb 2020	071	007
15 Feb 2020	071	007

Bulletin

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

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 returned to nominal levels: the wind speed decreased from 420 km/s to 320 km/s, the total interplanetary magnetic fields was below 6 nT, and the southward magnetic component fluctuated between -2.0 nT and 5.0 nT. The solar wind conditions are expected to remain globally at background levels for the next 24-hour period. We anticipate possible mild enhancement of the solar wind parameters later today or tomorrow due to the solar wind coming from the small equatorial coronal hole (negative polarity) that reached the central meridian on February 9.

The geomagnetic conditions were quiet and are expected to remain mostly quiet.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 17 stations.

Indices solaires pour 12 Feb 2020

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	072
AK Chambon La Forêt	005
AK Wingst	005
Ap estimé	004
Nombre international de taches solaires estimé	000 - Basé sur 28 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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