Affichage des archives de lundi, 27 février 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Feb 27 1250 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
27 Feb 2017	078	007
28 Feb 2017	077	010
01 Mar 2017	076	016

Bulletin

Solar activity was very low with no C class flares. NOAA active regions (ARs) 2638, 2639 and 2640 were stable. X-ray flux is expected to remain at background level. No Earth directed CMEs have been recorded in coronagraph data. The transequatorial extension of the negative polarity southern polar coronal hole is expected to become geoeffective around midnight 28-Feb-2017/01-March-2017. Proton flux values are expected to remain at background levels. Solar wind speed declined from around 450 km/s to around 350 km/s. Total magnetic field was in the 3:6nT range. Bz was in the -3:4nT range. Solar wind is expected to be at nominal levels over the next 24 hours before an anticipated increase late 28-Feb-2017 due to high speed stream from the negative polarity coronal hole. Geomagnetic conditions have been quiet (local K Dourbes 0-2, NOAA Kp 1-2). Over the next days, geomagnetic conditions are expected to be quiet to unsettled and increasing to quiet to active by late 28-Feb 2017 with the anticipated high speed stream.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 041, sur la base de 18 stations.

Indices solaires pour 26 Feb 2017

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	079
AK Chambon La Forêt	006
AK Wingst	002
Ap estimé	001
Nombre international de taches solaires estimé	032 - Basé sur 19 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