Affichage des archives de jeudi, 12 septembre 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Sep 12 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
12 Sep 2019	068	005
13 Sep 2019	068	003
14 Sep 2019	067	005

Bulletin

There are no active regions visible on the disk. Solar activity has been very low over the past 24 hours, no significant flares have been recorded. No Earth directed CMEs have been observed in past 24 hours. A small eruption was observed on the east limb of the Sun at 18:30 UT on September 11, but it is not expected to affect Earth. The greater than 10MeV proton flux remained at background levels over the past 24 hours.

Solar activity is expected to remain low.

The solar wind speed gradually decreased over the last 24 hours, recording values between 380 and 450 km/s. The interplanetary magnetic field was predominantly directed away from the Sun (positive sector) and fluctuated between 1 and 5 nT. The Bz fluctuated between -4 and +4 nT. Geomagnetic conditions have been quiet to unsettled over the past 24 hours, with the Kp index (NOAA) and the local k index (Dourbes) recording values between 1-3 and 0-3, respectively.

Quiet conditions are expected to continue over the next 48 hours, with isolated unsettled intervals possible.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 25 stations.

Indices solaires pour 11 Sep 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	068
AK Chambon La Forêt	008
AK Wingst	005
Ap estimé	004
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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