Affichage des archives de dimanche, 25 juin 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Jun 25 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
25 Jun 2017	074	013
26 Jun 2017	074	016
27 Jun 2017	075	016

Bulletin

Over the past 24 hours solar activity has been low. No significant flares have been recorded. AR 2664 (Mcintosh class:Cso; Mag. type:Beta) has shown some evidence of flux emergence and cancellation in HMI magnetogram observations, and produced a couple of small eruptions, this region may increase flaring activity over the coming days. No Earth directed Coronal Mass Ejections (CMEs) have been detected. There's a small northern coronal hole extending to lower latitudes that in the western hemisphere that may increase solar wind speeds over the next couple of days. Solar activity is expected to remain low over the next 24 hours with a low probability of C-class flares and a very low probability of M-class flares. The solar wind speed has slowly increased from around 390 km/s to 430 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 6 and 9 nT. The Bz component fluctuated between -6 nT and +8 nT. Geomagnetic conditions ranged between Kp index 2-4 (NOAA) and local K index 0-3 (Dourbes) over the past 24 hours. Geomagnetic conditions are expected to be quiet to active, with the increasing solar wind speeds combined with a negative Bz may enhancing geomagnetic conditions.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 018, sur la base de 17 stations.

Indices solaires pour 24 Jun 2017

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	074
AK Chambon La Forêt	019
AK Wingst	014
Ap estimé	013
Nombre international de taches solaires estimé	026 - Basé sur 22 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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