Affichage des archives de vendredi, 16 septembre 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Sep 16 1241 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
16 Sep 2016	084	003
17 Sep 2016	083	006
18 Sep 2016	082	013

Bulletin

Over the past 24 hours solar activity has been low. No C-class flares, no earth-directed coronal mass ejections (CME) have been observed. Active Region (AR) NOAA 2592 (Macintosh class:Bxo; Mag. type:Beta) has emerged over the East solar limb and has been most active, producing the B4.1 class flare, which peaked at 04:43 UT yesterday. Another AR 2591 has shown low levels of activity. Solar protons have remained at background levels over the past 24 hours. No Earth directed CMEs were detected. Solar activity is expected to remain low over the next 24 hours with a high chance of B-class flares and a low probability of C-class flares. The variations of the solar wind parameters were weak. Solar wind speed remained below 330 km/s during the last 24 hours. The magnitude of the Interplanetary Magnetic Field (Bt) smoothly elevated from 5 nT till 7 nT yesterday evening (15-Aug-2016). The Bz component remained neutral till 19:30 UT yesterday evening (15 Aug-2016) and then became positive. Geomagnetic conditions have been very quiet in the past 24 hours (K Dourbes between 0 and 2; NOAA Kp between 0 and 1). Geomagnetic activity is expected to continue at low levels today (16-Aug-2016) and tomorrow (17-Aug-2016). Active to minor geomagnetic storm conditions (K Dourbes between 3 and 4) are possible from 18-Aug-2016 as a possible response to the negative polarity coronal hole moving into a potentially geoeffective position.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 013, sur la base de 17 stations.

Indices solaires pour 15 Sep 2016

Nombre de Wolf, observé par Catania	037
Flux solaire à 10 cm	084
AK Chambon La Forêt	007
AK Wingst	006
Ap estimé	007
Nombre international de taches solaires estimé	022 - Basé sur 21 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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