Affichage des archives de vendredi, 18 avril 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Apr 18 1312 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
18 Apr 2014	183	008
19 Apr 2014	185	006
20 Apr 2014	187	006

Bulletin

Twelve sunspot groups were reported by NOAA today. NOAA ARs 2035, 2036, and 2037 (Catania numbers 24, 25, and 26 respectively) maintain the beta-gamma configuration of the photospheric magnetic field. Up to very recently, the strongest flare of the past 24 hours was the C4.8 flare peaking at 08:09 UT today in the NOAA AR 2036 (Catania number 25). The CME associated with this flare is narrow and is not expected to arrive at the Earth. The same active region just produced an M7.3 flare peaking at 13:03 UT. The currently available data do not allow us to determine if a CME is associated with this flare. We expect further flaring activity on the C-level, with a good chance for another M-class event. The Earth is currently inside an intermediate-speed solar wind flow (around 440 km/s) with a slightly enhanced (around 6-7 nT) interplanetary magnetic field magnitude. We expect quiet to unsettled geomagnetic conditions (K index below 4), with active conditions (K = 4) possible but unlikely.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 134, sur la base de 17 stations.

Indices solaires pour 17 Apr 2014

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	179
AK Chambon La Forêt	013
AK Wingst	012
Ap estimé	012
Nombre international de taches solaires estimé	148 - Basé sur 25 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

<< Aller à l'aperçu quotidien