Affichage des archives de mercredi, 4 mai 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 May 04 1231 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
04 May 2016	090	008
05 May 2016	089	008
06 May 2016	090	007

Bulletin

Solar activity remains low, with no C-class flares reported during last 24 hours. The strongest reported flare was B7.5 flare, peaking at 00:01 UT, on May 04. The flare originated from the active region situated at that moment just behind the east solar limb. There are currently four numbered sunspot groups visible on the solar disc, all having simple (alpha and beta) configuration of their photospheric magnetic field. The occasional C-class flares are still possible in the following 24 hours (probability is about 30 percent). No Earth directed CMEs were observed in the last 24 hours.

The solar wind speed has decreased and currently amounts about 450 km/s. The interplanetary magnetic field magnitude remained stable having the value of 3 nT. The fast solar wind, associated with the small equatorial coronal hole which reached central meridian yesterday morning, might be expected at the Earth on May 06. The geomagnetic conditions are quiet and we expect them to remain so in the coming hours.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 072, sur la base de 20 stations.

Indices solaires pour 03 May 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	090
AK Chambon La Forêt	012
AK Wingst	011
Ap estimé	012
Nombre international de taches solaires estimé	071 - Basé sur 28 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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