Affichage des archives de samedi, 8 juin 2019

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2019 Jun 08 1230 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
08 Jun 2019	069	008
09 Jun 2019	069	008
10 Jun 2019	070	010

Bulletin

Solar activity has been quiet over the past 24 hours. The X-ray flux remained at background levels, and the visible solar disc is spotless. EUV imagery reveals a simple magnetic structure near the central meridian, but appears stable in magnetogram observations. Solar activity is expected to remain at low levels for the next 24 hours. No Earth directed Coronal Mass Ejections (CME) have been detected in the available coronagraph imagery over the past 24 hours. The greater than 10 MeV solar protons flux remained at nominal levels over the past 24 hours and is expected to remain so.

The solar wind speed has fluctuated between 310 and 350 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 3.5 and 9.0 nT. The Bz component fluctuated around 0 nT, between -4.0 and 6.0 nT. Both the solar wind speed and field strength experienced a small jump around 09:00 UT this morning, which may have been caused by a small Earth directed CME observed in STEREO COR2 observations on 06-Jun-2019, with a speed of approximately 210 km/s. The eruption was anticipated to interact with the Earth system late on 07-Jun-2019. The effects are expected to be small.

Geomagnetic conditions fluctuated between Kp index 0-1 (NOAA) and local K index 0-3 (Dourbes) over the past 24 hours. The Earth is currently under the influence of a slow solar wind stream. A small coronal hole passed the central meridian yesterday and the associated High Speed Stream (HSS) may enhance solar wind conditions at Earth, although the effects are anticipated to be small. Geomagnetic conditions are expected to be quiet with a small possibility of unsettled conditions.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 000, sur la base de 17 stations.

Indices solaires pour 07 Jun 2019

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	069
AK Chambon La Forêt	008
AK Wingst	005
Ap estimé	005
Nombre international de taches solaires estimé	000 - Basé sur 25 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

<< Aller à l'aperçu quotidien