Affichage des archives de samedi, 17 février 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Feb 17 1256 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
17 Feb 2018	072	019
18 Feb 2018	071	010
19 Feb 2018	070	007

Bulletin

Over the past 24 hours solar activity has been low. No significant flares have been recorded. Active Region (AR) 2699 (Mcintosh class:Hax; Mag. type:Alpha) has reached the west 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 has increased from around 350 to 500 km/s over the past 24 hours. The total magnetic field strength has slowly decreased from around 10 to 5 nT, the Bz component has fluctuated between -6 and +6 nT. Geomagnetic conditions ranged between Kp index 1-4 (NOAA) and local K index 1-3 (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 has enhanced solar wind speeds at Earth. Geomagnetic conditions are expected to be quiet to unsettled.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 15 stations.

Indices solaires pour 16 Feb 2018

Nombre de Wolf, observé par Catania	016
Flux solaire à 10 cm	072
AK Chambon La Forêt	015
AK Wingst	008
Ap estimé	007
Nombre international de taches solaires estimé	014 - 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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