Affichage des archives de dimanche, 28 août 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Aug 28 1230 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
28 Aug 2016	084	007
29 Aug 2016	084	038
30 Aug 2016	084	011

Bulletin

Solar activity was very low. Just a single B2.5 flare was reported from region NOAA 2582. This region newly emerged just South-East of former region 2597. Some new flux emergence and spot formation was also recorded in NOAA 2580 by the end of the period while NOAA 2581 showed consolidation of its leading spot. X-ray flux is expected to remain below C level with a chance for an isolated C flare. Proton flux levels are at background values and expected to remain so. No Earth directed CMEs have been observed in coronagraph data.

Nominal solar wind conditions were observed with solar wind speed slowly decreasing to around 400 km/s. Total magnetic field was at or below 5nT with a variable Bz component. The magnetic field phi angle indicated a negative sector throughout the period. Solar wind conditions are expected to see later today or early tomorrow a sector boundary crossing into a positive sector (away from the Sun) followed by the onset of a high speed stream from the transequatorial coronal hole.

Geomagnetic conditions were quiet (both local K Dourbes and NOAA Kp 0-2). Geomagnetic conditions will become enhanced over the next 24 hours as a consequence of the sector boundary crossing and the coronal hole high speed stream. First up to active and later up to minor storm levels must be expected.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 058, sur la base de 19 stations.

Indices solaires pour 27 Aug 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	084
AK Chambon La Forêt	006
AK Wingst	005
Ap estimé	005
Nombre international de taches solaires estimé	056 - Basé sur 29 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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