Affichage des archives de mardi, 7 janvier 2020

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2020 Jan 07 1231 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

Minor storm expected (A>=30 or K=5)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
07 Jan 2020	071	005
08 Jan 2020	071	020
09 Jan 2020	071	015

Bulletin

The solar activity has been at very low levels over the past 24 hours. The sunspot group (NOAA 2755) continued to decay and did not produce any flaring activity. The X-ray flux is below B-level and solar activity is expected to remain at low levels for 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 environment near Earth is under the influence of coronal hole wind streams. The solar wind speed slowly decreased from about 520 km/s to 390 Km/s, the total magnetic field is below 5 nT, and the southern component of the magnetic filed fluctuated between -3 nT and 3 nT being negative for long periods (as recorded by the ACE spacecraft). The solar wind speed is expected to continue to decrease slowly until January 8 in the first part of the day. Then we anticipate additional enhancements of the solar wind due to the high-speed streams from the equatorial coronal holes that reached the central meridian on Jan 5.

Quiet to unsettle geomagnetic conditions were observed with Kp-index (NOAA) and K-Dourbes ranging from 2 and 3 in response to the solar wind enhancement and longer period of the southern component of the magnetic field. Quiet to unsettle conditions is expected for the next 24 hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 10 stations.

Indices solaires pour 06 Jan 2020

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	071
AK Chambon La Forêt	010
AK Wingst	009
Ap estimé	008
Nombre international de taches solaires estimé	008 - 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

<< Aller à l'aperçu quotidien