Affichage des archives de vendredi, 16 février 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Feb 16 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
16 Feb 2018	073	015
17 Feb 2018	072	016
18 Feb 2018	071	010

Bulletin

Over the past 24 hours solar activity has been low. No significant flares have been recorded. Active Region (AR) 2699 (Mcintosh class:Cao; Mag. type:Beta) has been most active, showing considerable flux emergence and cancellation, but is now approaching the western limb. The greater than 10MeV proton flux remained at background levels over the past 24 hours. No Earth directed Coronal Mass Ejections (CMEs) have been detected. Over the next 24 hours there is a small chance of C-class flares. The solar wind speed fluctuated around 375 km/s over the past 24 hours. The total magnetic field strength has increased from around 5 nT to 15 nT, the Bz component has fluctuated between -5 and +15 nT. Geomagnetic conditions ranged between Kp index 1-4 (NOAA) and local K index 1-4 (Dourbes) over the past 24 hours. A High Speed Stream (HSS) associated with a large coronal hole that passed the central meridian a couple of days ago may enhance solar wind conditions over the next couple of days. Geomagnetic conditions are expected to be quiet to unsettled.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 013, sur la base de 19 stations.

Indices solaires pour 15 Feb 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	073
AK Chambon La Forêt	026
AK Wingst	020
Ap estimé	018
Nombre international de taches solaires estimé	017 - 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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