Affichage des archives de dimanche, 18 février 2018

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2018 Feb 18 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
18 Feb 2018	069	018
19 Feb 2018	068	008
20 Feb 2018	068	006

Bulletin

Over the past 24 hours solar activity has been low. No significant flares have been recorded. There are currently no Active Regions on the solar disk. 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 solar activity is expected to be low. The solar wind speed has increased from around 475 to 600 km/s over the past 24 hours. The total magnetic field strength has fluctuated around 6 nT, the Bz component has fluctuated between -5 and +6 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 has enhanced solar wind speeds, but should abate over the next 24 hours. 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 19 stations.

Indices solaires pour 17 Feb 2018

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	069
AK Chambon La Forêt	019
AK Wingst	014
Ap estimé	013
Nombre international de taches solaires estimé	000 - Basé sur 20 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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