Affichage des archives de lundi, 17 octobre 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Oct 17 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
17 Oct 2016	080	018
18 Oct 2016	079	012
19 Oct 2016	080	015

Bulletin

Over the past 24 hours solar activity has been low. The largest flare was a C4.2 class flare. The C4.2 class flare peaked at 00:38 UT this morning, from a currently unclassified Active Region (AR) close to the East solar limb. AR 2602 (Mcintosh class:Cao; Mag. type:Beta) is currently located near disk centre but appears stable in HMI magnetogram imagery. 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. The solar wind speed has fluctuated between 650 and 750 km/s over the past 24 hours. The total magnetic field strength has remained around 5 nT. The Bz component fluctuated around 0 nT, ranging between -5 and +6 nT. Geomagnetic conditions ranged between Kp index 2-5 (NOAA) and local K index 2-4 (Dourbes) over the past 24 hours. There is currently a large negative polarity Southern polar coronal hole which has moved into the Western hemisphere, the associated High Speed Stream (HSS) has enhanced the solar wind speed at Earth, but is expected to decrease over the next 48 hours. The HSS has enhanced geomagnetic conditions, and is expected to do so 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 : 024, sur la base de 08 stations.

Indices solaires pour 16 Oct 2016

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	081
AK Chambon La Forêt	034
AK Wingst	023
Ap estimé	022
Nombre international de taches solaires estimé	029 - 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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