Affichage des archives de jeudi, 6 février 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Feb 06 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
06 Feb 2020	071	017
07 Feb 2020	071	015
08 Feb 2020	071	007

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.

Solar wind showed the expected enhancements under the influence of a high speed stream from an extension of the southern polar coronal hole. Since midnight, Solar wind speed increased from 350km/s to 460 km/s. Total magnetic field reached a peak value of 11nT in the compression region, with Bz around -10nT for a while. The magnetic field phi angle was in the negative sector throughout the period. Solar wind speed is expected to rise further to a maximum of between 500-600 km/s over the next 24 hours before starting a slow return to background values.

Geomagnetic conditions reached active levels (NOAA Kp=5 for the 6-9UT period, while local K Dourbes remained 0-3). Unsettled to active conditions are expected over the next 24 hours before returning to quiet to unsettled conditions.

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

Indices solaires pour 05 Feb 2020

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	071
AK Chambon La Forêt	008
AK Wingst	005
Ap estimé	004
Nombre international de taches solaires estimé	000 - Basé sur 26 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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