Affichage des archives de lundi, 22 août 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Aug 22 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
22 Aug 2016	078	007
23 Aug 2016	080	008
24 Aug 2016	082	022

Bulletin

Solar activity was very low with the X-ray flux remaining below C level. The two regions on disk are the simple NOAA region 2578 and an additional (yet unnumbered) returning region which is rotating onto the Eastern hemisphere. Both remained quiet. Quiet conditions are expected to continue with only a very small chance for C flaring. The proton fluxes are at background levels and expected to remain so. No significant CME's have been identified in coronagraph images.

Solar wind conditions saw the total magnetic field reaching a maximum close to 15nT just after noon August 21 with also a gradual rise of the solar wind speed from around 325 to around 400 km/s. Bz was variable with a maximum southward deflection of -9nT. Meanwhile solar wind speed as well as magnetic field have declined to nominal values and are expected to remain so before later on August 24 the influence of the negative polarity coronal hole in the southern hemisphere may enhance solar wind conditions.

Geomagnetic conditions shortly reached active levels (both local K Dourbes and NOAA Kp 4) in the afternoon of August 21 but are currently back at quiet to unsettled levels. Geomagnetic conditions are expected to remain quiet to unsettled with from August 24 onwards, possibly active conditions under a high speed stream influence.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 025, sur la base de 20 stations.

Indices solaires pour 21 Aug 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	077
AK Chambon La Forêt	016
AK Wingst	011
Ap estimé	010
Nombre international de taches solaires estimé	009 - 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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