Affichage des archives de dimanche, 22 mai 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 May 22 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
22 May 2016	099	015
23 May 2016	098	012
24 May 2016	099	012

Bulletin

Over the past 24 hours solar activity has been low. The largest flare was a C1.0 class flare, produced by Active Region (AR) 2546 (Mcintosh class:Cho; Mag. type:Beta), peaking at 14:00 UT yesterday. AR 2544 has rotated over the solar limb. All other ARs have been quiet. Solar protons have remained at background levels over the past 24 hours. There have been no Earth directed CMEs detected. Solar activity is expected to remain low over the next 24 hours with a small probability of C-class flares. The solar wind speed has been slowly increasing from around 450 to 600 km/s over the past 24 hours. The total magnetic field strength has slowly decreased from 10 to 5 nT. The Bz component fluctuated between -6 and +8 nT, but has been largely positive this morning. Geomagnetic conditions ranged between Kp index 1-3 (NOAA) and local K index 1-4 (Dourbes) over the past 24 hours. A large Northern positive polar coronal hole is currently positioned in the Western hemisphere of the Sun that may enhance solar wind speeds at the Earth.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 021, sur la base de 13 stations.

Indices solaires pour 21 May 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	098
AK Chambon La Forêt	028
AK Wingst	020
Ap estimé	021
Nombre international de taches solaires estimé	018 - Basé sur 25 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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