Affichage des archives de vendredi, 3 février 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Feb 03 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
03 Feb 2017	076	022
04 Feb 2017	077	015
05 Feb 2017	078	013

Bulletin

Over the past 24 hours solar activity has been very low. No significant flares have been recorded. All Active Regions (ARs) have shown low levels of activity, however AR 2632 (Mcintosh class:Dao; Mag. type:Beta) has shown some evidence of growth. No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 hours. 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. A large negative polarity trans-equatorial coronal hole extending from the Southern pole is currently located in the Western hemisphere. The solar wind speed been slowly decreasing and fluctuated between 750 and 600 km/s over the past 24 hours. The total magnetic field strength has been around 5 nT. The Bz component fluctuated between -5 and +5 nT. Geomagnetic conditions ranged between Kp index 3-4 (NOAA) and local K index 1-4 (Dourbes) over the past 24 hours. The high speed stream (HSS) associated with the large negative polarity trans-equatorial coronal hole extending from the Southern pole is the cause of the increased solar wind speeds creating active Geomagnetic conditions. The enhanced solar wind speed is expected to create intermittent active geomagnetic conditions over the next couple of days, but should begin to abate.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 037, sur la base de 11 stations.

Indices solaires pour 02 Feb 2017

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	075
AK Chambon La Forêt	034
AK Wingst	027
Ap estimé	028
Nombre international de taches solaires estimé	042 - Basé sur 21 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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