Affichage des archives de samedi, 8 février 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Feb 08 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
08 Feb 2020	071	006
09 Feb 2020	071	007
10 Feb 2020	071	011

Bulletin

X-ray flux remained below B level throughout the period. The Sun is spotless and no flaring is expected.

No Earth-directed CMEs have been observed in coronagraph data.

The proton flux levels were at background values and expected to remain so. High energy electron fluxes are enhanced and expected to rise further due to the ongoing but decaying high speed Solar wind conditions.

Solar wind speed decayed from values around and over 600 km/s to below 500 km/s at the end of the period. The total magnetic field was mostly below 5nT with a variable Bz component. The phi angle remained in the negative sector throughout the period. Solar wind conditions are expected to show a slow and gradual return to nominal conditions over the next days. By late February 10, early February 11, we may see renewed enhancements related to the positive polarity coronal hole in the northern hemisphere.

Geomagnetic conditions were quiet to active (both NOAA Kp and local K Dourbes reached K=4 at midnight). Quiet to unsettled conditions are expected over the next 48 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 13 stations.

Indices solaires pour 07 Feb 2020

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	071
AK Chambon La Forêt	022
AK Wingst	016
Ap estimé	016
Nombre international de taches solaires estimé	000 - Basé sur 24 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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