Affichage des archives de mercredi, 9 octobre 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Oct 09 1236 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
09 Oct 2019	067	013
10 Oct 2019	067	008
11 Oct 2019	068	004

Bulletin

Solar activity was at very low levels, no significant flares have been recorded. The Sun remained spotless. 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.

Solar activity is expected to remain at very low levels.

The solar wind fluctuated around 385 km/s for most of the period and then began increasing, from 6 UT October 9, reaching up to 430 km/s (ACE). The total magnetic field fluctuated between 0 and 5 nT and then from 6 UT gradually increased to values up to 9 nT. Bz was mostly negative and varied between -7 and +3 nT.

Geomagnetic activity was quiet to unsettled for the first part of the period, following which active conditions were observed (Kp and local k index Dourbes = 4) between 9 and 12 UT October 9 due to an extended period of strong negative Bz.

Unsettled conditions are expected to continue with isolated active periods possible over the next 24 hours in response to further enhancements in the solar wind.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 09 stations.

Indices solaires pour 08 Oct 2019

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	067
AK Chambon La Forêt	013
AK Wingst	006
Ap estimé	005
Nombre international de taches solaires estimé	000 - Basé sur 22 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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