Affichage des archives de mardi, 13 septembre 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Sep 13 1309 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
13 Sep 2016	087	006
14 Sep 2016	085	011
15 Sep 2016	083	008

Bulletin

Solar activity was low in the past 24 hours. Only one B2.7 flare was observed today (13-Sep-2016) from active region (AR 2585) which peaked at 04:44 UT. Three additional active regions are presently observed on the solar disk. Their magnetic configuration is simple and the probability to produce a flare is small. No Earth-directed CMEs were observed. Solar activity is expected to be low with a small probability of C-class flares. Solar wind parameters were at nominal values. The Solar wind speed measured by DSCOVR and ACE fluctuated around 300 km/s. The magnitude of the Interplanetary Magnetic Field (Bt) has decreased from 8 nT to 5 nT, while Bz has been mainly negative since 19:00 UT yesterday ranging between +8 nT and -5 nT. There are currently no significant coronal holes on the solar disk that may influence the Earth. In the past 24 hours, geomagnetic conditions have been quiet (K Dourbes between 1 and 3; NOAA Kp between 1 and 2). Geomagnetic activity is expected to remain the low over the next 24 hours, with a small possibility of an increase when we encounter a sector boundary crossing on 2016-Sep-14.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 038, sur la base de 24 stations.

Indices solaires pour 12 Sep 2016

Nombre de Wolf, observé par Catania	065
Flux solaire à 10 cm	087
AK Chambon La Forêt	009
AK Wingst	006
Ap estimé	006
Nombre international de taches solaires estimé	058 - Basé sur 35 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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