Affichage des archives de jeudi, 14 avril 2016

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2016 Apr 14 1230 UTC

Prévisions SIDC

Éruptions solaires

C-class flares expected, (probability >=50%)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
14 Apr 2016	108	018
15 Apr 2016	108	007
16 Apr 2016	108	007

Bulletin

Beta region NOAA AR 2529 released one C2.9 flare in the past 24 hours, which peaked at 23:43 UT on April 13. More C flares (probability 65%) are expected in the next 24 hours, with a slight chance (probability 10%) for an M flare, especially from AR 2529. CACTUS detected a northwestward CME on LASCO C2 data starting from 17:36 UT on April 13. This CME is most probably associated with a backside filament eruption first observed in EUVI A imagery at 17:15 UT, and will not be geo-effective. In the wake of a coronal hole high speed stream, solar wind speed decreased from about 540 to 450 km/s around 6:50 UT on April 14. A weak shock in the solar wind was registered by ACE at 6:54 UT, lifting the solar wind speed to about 490 km/s. This shock probably corresponds to the expected glancing blow from the April 10 CME. The magnitude of the Interplanetary Magnetic Field decreased from 7 to 4 nT, before the shock delivered values of around 10 nT. Over the past 24 hours, geomagnetic conditions have been quiet to active (K Dourbes between 1 and 4; NOAA Kp between 2 and 4). Quiet to unsettled geomagnetic levels (K Dourbes < 4) are expected on April 14, 15 and 16, with a chance for active (K Dourbes = 4) excursions on April 14.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 048, sur la base de 14 stations.

Indices solaires pour 13 Apr 2016

Nombre de Wolf, observé par Catania	069
Flux solaire à 10 cm	108
AK Chambon La Forêt	031
AK Wingst	025
Ap estimé	028
Nombre international de taches solaires estimé	051 - Basé sur 26 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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