Affichage des archives de mercredi, 26 septembre 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Sep 26 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
26 Sep 2018	068	007
27 Sep 2018	068	007
28 Sep 2018	068	007

Bulletin

Solar activity was very low with X-ray flux remaining below B level and no spots on the visible disk. This is expected to remain so over the next days.

No Earth directed CMEs have been identified in coronagraph images.

Proton flux levels were at background values and are expected to remain so.

Solar wind conditions remained slightly elevated with solar wind speed reaching a peak of 480 km/s but mostly below 450 km/s. Total magnetic field was between 2-7.5nT. The magnetic field phi angle was in the positive sector for the entire period. Solar wind conditions should slowly turn to nominal over next days, with some slight increases possible under the influence of a negative polarity coronal hole in the Southern hemisphere.

Geomagnetic conditions were quiet to unsettled (NOAA Kp 1-3 and local K Dourbes 0-3) and quiet to unsettled conditions are expected to continue over the next days.

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

Indices solaires pour 25 Sep 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	068
AK Chambon La Forêt	014
AK Wingst	012
Ap estimé	012
Nombre international de taches solaires estimé	000 - Basé sur 32 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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