Affichage des archives de vendredi, 26 août 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Aug 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 Aug 2016	080	006
27 Aug 2016	080	007
28 Aug 2016	079	007

Bulletin

Solar activity was very quiet with 2 B flares from NOAA region 2579. The largest was of magnitude B6.6 peaking at 7:02UT. The region that emerged yesterday was numbered NOAA 2581 and shows further slight overall growth. None of the regions on disk has a particularly complicated structure and X-ray flux is expected to continue to lie below C level, although occurrence of a C flare can not be excluded. Solar proton flux levels were at background values and expected to remain so. No Earth directed CMEs have been observed.

Solar wind showed the decline of the coronal hole high speed stream influence, with solar speed decreasing from 550km/s to around 450 km/s. Total magnetic field was in the 5-7nT range with Bz variable with a maximal southward deflection of around -6nT. A further normalization to nominal solar wind conditions is expected.

Geomagnetic conditions were quiet to unsettled (local K Dourbes 1-3, NOAA Kp 2-3). Over the next 48 hours quiet geomagnetic conditions are expected with unsettled periods possible.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 048, sur la base de 23 stations.

Indices solaires pour 25 Aug 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	079
AK Chambon La Forêt	023
AK Wingst	016
Ap estimé	015
Nombre international de taches solaires estimé	050 - 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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