Affichage des archives de lundi, 14 décembre 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Dec 14 1231 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
14 Dec 2015	126	007
15 Dec 2015	129	022
16 Dec 2015	129	010

Bulletin

A C1.0 flare was released by NOAA AR 2469, peaking at 00:14 UT on December 14. C flares are expected within the next 24 hours, with a chance for an M flare, especially from AR 2470. LASCO C2 imagery showed a slow CME first detected by CACTUS at 11:00 UT, associated with the C5.3 flare which peaked at 10:34 UT on December 13. The CME is directed towards the East and is not expected to be Earthbound. Solar wind speed decreased from about 480 to 380 km/s in the past 24 hours, while the magnitude of the Interplanetary Magnetic Field varied between 2 and 5 nT. Over the past 24 hours, geomagnetic conditions have been quiet to unsettled (K Dourbes between 0 and 3; NOAA Kp between 1 and 2). Quiet to unsettled geomagnetic conditions (K Dourbes < 4) are expected on December 14. The expected arrival of a coronal hole high speed stream may cause active (K Dourbes = 4) geomagnetic levels on December 15 and 16, with a slight chance for a minor storm (K Dourbes = 5).

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 079, sur la base de 08 stations.

Indices solaires pour 13 Dec 2015

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	123
AK Chambon La Forêt	010
AK Wingst	006
Ap estimé	006
Nombre international de taches solaires estimé	073 - Basé sur 20 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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