Affichage des archives de samedi, 10 août 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Aug 10 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
10 Aug 2019	067	012
11 Aug 2019	067	013
12 Aug 2019	067	006

Bulletin

Solar activity was at very low levels. The Sun was spotless. No earth-directed coronal mass ejections (CME) were observed during the period. The greater than 10 MeV proton flux was at nominal values.

Solar activity is expected to remain at very low levels.

Solar wind intensified once more, starting after 15UT with wind speeds being in the 600-660 km/s range from about 20UT until 03UT (ACE). Solar wind speed then gradually decreased to values between 470 and 500 km/s by the end of the period. Bz varied between -5 and +5 nT. The interplanetary magnetic field (phi angle) remained predominately oriented away from the Sun (positive sector).

Quiet to unsettled geomagnetic conditions were observed, and are expected to continue. K Dourbes recorded an isolated active episode during the 23-02UT interval. The wind stream from an irregular shaped negative polarity coronal hole is expected to arrive late on 10 or on 11 August, which may result in mostly unsettled geomagnetic conditions, an isolated active episode not excluded.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 19 stations.

Indices solaires pour 09 Aug 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	067
AK Chambon La Forêt	016
AK Wingst	008
Ap estimé	007
Nombre international de taches solaires estimé	000 - Basé sur 27 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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