Affichage des archives de mercredi, 25 novembre 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Nov 25 1230 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
25 Nov 2015	115	018
26 Nov 2015	117	021
27 Nov 2015	119	015

Bulletin

In the past 24 hours, beta region NOAA AR 2454 produced one C1.9 flare which peaked around 8:26 UT on November 25. C flares are expected within the next 24 hours, with a 10% chance for an M flare. STEREO COR2 A first observed a bright CME in its East to Southeast direction at 8:54 UT on November 25. LASCO data are not yet available. This CME is most probably associated with the C1.9 flare of 8:26 UT. Awaiting LASCO imagery, and in view of the location of the flare near the West limb, this CME is not expected to be Earthbound. The Earth is currently within a slow solar wind region regime. Solar wind speed varied between 260 and 360 km/s in the past 24 hours, while the magnitude of the Interplanetary Magnetic Field ranged between 2 and 5 nT. Over the past 24 hours, geomagnetic conditions have been quiet (K Dourbes between 0 and 2; NOAA Kp between 0 and 1). The expected arrival of a coronal hole high speed stream may cause active (K Dourbes = 4) geomagnetic levels on November 25, 26 and 27, with a slight chance for minor storm intervals (K Dourbes = 5).

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 060, sur la base de 10 stations.

Indices solaires pour 24 Nov 2015

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	113
AK Chambon La Forêt	002
AK Wingst	000
Ap estimé	001
Nombre international de taches solaires estimé	062 - Basé sur 16 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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