Affichage des archives de vendredi, 21 novembre 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Nov 21 1204 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
21 Nov 2014	170	015
22 Nov 2014	172	015
23 Nov 2014	174	016

Bulletin

Six C-class flares were detected on the Sun in the past 24 hours: four in the NOAA AR 2209 and two in the NOAA AR 2216. The strongest flare was the C2.5 flare peaking at 19:56 UT yesterday in the NOAA AR 2209. It was not associated with a CME. The NOAA AR 2209 maintains the beta-gamma- delta configuration of its photospheric magnetic field, so we expect flaring activity on the C-level from this region as well as from the NOAA AR 2216, with an isolated M-class flare possible but unlikely. A long filament in the northern hemisphere is approaching the solar central meridian. Its eruption may lead to an Earth-directed CME. The Earth is currently inside a slow (around 380 km/s) solar wind flow with slightly elevated (7-8 nT) interplanetary magnetic field magnitude. The geomagnetic conditions are expected to stay at the quiet to unsettled level (K < 4) with isolated intervals of active conditions (K = 4).

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 046, sur la base de 11 stations.

Indices solaires pour 20 Nov 2014

Nombre de Wolf, observé par Catania	121
Flux solaire à 10 cm	168
AK Chambon La Forêt	021
AK Wingst	016
Ap estimé	013
Nombre international de taches solaires estimé	045 - Basé sur 18 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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