Affichage des archives de mardi, 24 mai 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 May 24 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
24 May 2016	094	003
25 May 2016	093	007
26 May 2016	092	011

Bulletin

Eight B-class flares and one C-class event were observed during the period, with the C1.3 flare peaking at 10:20UT on 24 May. The source of all this minor flaring activity was NOAA 2546 which remains the largest sunspot group currently visible. A new small sunspot region emerged near disk centre (Catania 80; N12E01), but remained quiet. No earth-directed coronal mass ejections (CMEs) were observed.

Mostly quiet conditions are expected, with a small chance on an isolated C-class flare.

Solar wind speed mostly varied between 400 and 500 km/s. Bz varied between -6 and +6 nT, with the Interplanetary Magnetic Field directed away from the Sun. A small negative coronal hole (CH) on the southern hemisphere has transited the central meridian. Quiet geomagnetic conditions were observed.

Quiet to unsettled geomagnetic conditions are expected during the first 24 hours. Late on 25 or on 26 May, the wind stream associated with the small negative southern CH may affect the geomagnetic environment. This may result in active geomagnetic conditions.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 024, sur la base de 20 stations.

Indices solaires pour 23 May 2016

Nombre de Wolf, observé par Catania	021
Flux solaire à 10 cm	097
AK Chambon La Forêt	008
AK Wingst	004
Ap estimé	004
Nombre international de taches solaires estimé	016 - Basé sur 23 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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