Affichage des archives de dimanche, 23 novembre 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Nov 23 1245 UTC

Prévisions SIDC

Éruptions solaires

Eruptive (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
23 Nov 2014	170	011
24 Nov 2014	173	016
25 Nov 2014	178	012

Bulletin

NOAA ARs 2209 and 2216 (Catania numbers 9 and 14 respectively) have delta-spots in their trailing parts and continue to produce C-class flares. However, the strongest flare of the past 24 hours was the C3.5 flare peaking at 10:53 UT today in the still unnumbered sunspot group that appeared from behind the east solar limb yesterday evening. We expect flaring activity on the C-level, possibly with an isolated M-class flare. A long filament in the northern hemisphere has finished crossing the solar central meridian, but its eruption may still lead to an Earth-directed CME. The Earth is currently inside a slow (around 400 km/s) solar wind flow with slightly elevated (7-8 nT) interplanetary magnetic field magnitude. Due to low solar wind speed, the geomagnetic conditions remained mostly at the quiet to unsettled level (K < 4), only with one interval of active conditions (K = 4) reported by IZMIRAN and NOAA yesterday evening. The geomagnetic conditions are expected to stay at the quiet to unsettled levels (K < 4), with isolated intervals of active conditions (K = 4).

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 062, sur la base de 14 stations.

Indices solaires pour 22 Nov 2014

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	167
AK Chambon La Forêt	016
AK Wingst	010
Ap estimé	010
Nombre international de taches solaires estimé	060 - Basé sur 17 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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