Affichage des archives de dimanche, 27 août 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Aug 27 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
27 Aug 2017	078	006
28 Aug 2017	077	005
29 Aug 2017	076	008

Bulletin

Over the past 24 hours solar activity has been low. There have been several B-flares flares originated at NOAA AR 2671 (McIntosh: Fai; Mag.Type: Beta-Gamma) and at NOAA AR 2672 (McIntosh: Eai; Mag.Type: Beta- Gamma). The biggest flare B5.4 peaked yestreday (26-Aug-2017) at 21:00 UT. No Earth-directed CMEs have been detected over the past 24 hours. Solar protons have remained at background levels. NOAA AR 2672 and one returning active region are expected to produce more B-class flares over the next 24 hours. C class flares are also not excluded. The solar wind speed has fluctuated around 360 km/s over the past 24 hours. The total magnetic field strength has fluctuated around 6 nT. The Bz component varied between -4.1 and 4.4 nT being mainly positive. Geomagnetic conditions ranged between Kp index 1-3 (NOAA) and local K index 1-2 (Dourbes) over the past 24 hours. Geomagnetic conditions are expected to be quiet for the next two days. Quiet to unsettled conditions can be expected on day three due to the weak influence of a negative polarity CH HSS.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 033, sur la base de 22 stations.

Indices solaires pour 26 Aug 2017

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	078
AK Chambon La Forêt	010
AK Wingst	005
Ap estimé	004
Nombre international de taches solaires estimé	049 - Basé sur 32 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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