Affichage des archives de vendredi, 17 novembre 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Nov 17 1258 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
17 Nov 2017	075	012
18 Nov 2017	076	010
19 Nov 2017	076	012

Bulletin

Solar flaring activity is low, with only few low B-class flares reported. All reported flares originated from the Catania sunspot group 63 (NOAA AR 2687) which maintains the beta configuration of its photospheric magnetic field. We do not expect significant change of flaring activity in the coming hours. During last 24 hours there were no Earth directed CMEs reported, and the solar protons remained at background level. The solar wind speed presently amounts about 430 km/s (its maximum value within the last 24 hours was about 510 km/s). The interplanetary magnetic field magnitude is stable having the value of about 4 nT. The fast solar wind associated with the equatorial coronal hole which reached central meridian in the early morning of November 16 is expected to arrive at the Earth on November 19. The fast flow associated with the low latitude extension of the southern polar coronal hole (reached central meridian in the late evening of November 13) is expected to arrive at the Earth this evening. The geomagnetic conditions are presently quiet to unsettled, we expect unsettled to active geomagnetic conditions later today due to the arrival of the fast solar wind.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 024, sur la base de 22 stations.

Indices solaires pour 16 Nov 2017

Nombre de Wolf, observé par Catania	019
Flux solaire à 10 cm	073
AK Chambon La Forêt	014
AK Wingst	016
Ap estimé	016
Nombre international de taches solaires estimé	017 - 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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