Affichage des archives de mardi, 3 octobre 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Oct 03 1230 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
03 Oct 2017	085	010
04 Oct 2017	085	010
05 Oct 2017	084	015

Bulletin

Solar activity was at very low levels. The 2 visible sunspot groups were quiet. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels.

Quiet flaring conditions are expected, with a small chance on a C-class flare.

Solar wind speed varied between 390 and 440 km/s (DSCOVR), ending the period near 410 km/s. Bz fluctuated between -6 and +5 nT. The interplanetary magnetic field was mostly directed away from the Sun, with "towards" excursions from 02UT onwards. A small negative equatorial coronal hole (CH) transited the central meridian on 01-03 October.

The geomagnetic field was at quiet to unsettled levels, and is expected to remain so. The particle stream associated with the aforementioned CH may start influencing the earth environment on 04 or 05 October, increasing the likelihood on an active geomagnetic episode.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 027, sur la base de 16 stations.

Indices solaires pour 02 Oct 2017

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	086
AK Chambon La Forêt	010
AK Wingst	005
Ap estimé	006
Nombre international de taches solaires estimé	034 - Basé sur 29 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