Affichage des archives de mercredi, 19 septembre 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Sep 19 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
19 Sep 2018	068	008
20 Sep 2018	068	006
21 Sep 2018	068	007

Bulletin

The solar activity is low, and there were no flares reported during last 24 hours. New sunspot group was reported by Catania today, numbered as Catania sunspot group 96. However, as this sunspot group is presently very simple, the probability for the C-class flares in the coming hours remains to be low (less than 5 percent). The coronagraph images from last 24 hours do not show signatures of the possibly Earth directed CME. The solar protons remain to be at the background level.

The solar wind speed continues to decrease and it presently amounts about 440 km/s, while the interplanetary magnetic field magnitude stays to be around 4 nT. The equatorial coronal hole has reached the central meridian this morning, and the associated fast solar wind might reach the Earth on September 22. The geomagnetic conditions were quiet and we expect they will stay so in the coming hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 24 stations.

Indices solaires pour 18 Sep 2018

Nombre de Wolf, observé par Catania	000
Flux solaire à 10 cm	068
AK Chambon La Forêt	010
AK Wingst	006
Ap estimé	006
Nombre international de taches solaires estimé	000 - Basé sur 35 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