Affichage des archives de mercredi, 29 mai 2013

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2013 May 29 1136 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
29 May 2013	105	001
30 May 2013	105	006
31 May 2013	105	032

Bulletin

Solar activity was low during the past 24 hours, with only two C1-class flares. The last one was a two-ribbon flare and occurred at 7h30 UT near active region Catania 83 (NOAA 1755), but currently no associated CME is detected. C-class flaring conditions are expected for the next 48 hours. The solar wind speed decreased during the past 24 hours from 800 to 550 km/s. The interplanetary magnetic field is stable with a magnitude of less than 5 nT and a positive Bz-component. Geomagnetic conditions are quiet (local K<3 at Dourbes) and are expected to remain so for the next 24 hours. At the end of day 2 we expect the arrival of a fast solar wind stream emanating from a coronal hole in the central of the solar disk, possibly resulting in geomagnetically active to minor storm levels (K= 4 to 5).

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 050, sur la base de 06 stations.

Indices solaires pour 28 May 2013

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	105
AK Chambon La Forêt	008
AK Wingst	010
Ap estimé	010
Nombre international de taches solaires estimé	055 - 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

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