Affichage des archives de samedi, 7 juin 2014

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2014 Jun 07 1350 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
07 Jun 2014	145	006
08 Jun 2014	150	007
09 Jun 2014	155	008

Bulletin

One M-class and six C-class flares were observed during the past 24 hours. Catania sunspot group 69 (NOAA AR 2080) was the main source region. The M1.4 flare peaked at 19:31 on 6 June. Catania group 69 is currently magnetically most complex and has also developed a delta component. Catania groups 71 and 76 (resp NOAA ARs 2082 and 2085) have developed to beta-gamma regions. An asymmetric halo CME was observed in coronagraphic imagery (SOHO/LASCO C2,C3, STEREO A & B COR2). It was first visible in SOHO/LASCO C2 from 13:25 UT on 6 June and is mainly propagating east of the Sun Earth line. Associated activity is observed by STEREO A & B EUVI 195 near old region NOAA 2065 at the far side of the Sun. The event is thus backsided and will not be geoeffective. More M-class flare are expected during the next 48 hours, with Catania group 69 as main source candidate, but also Catania groups 71 and 76 could produce flares. Stable solar wind conditions continue with a solar wind speed between 320 and 400 km/s and the magnitude of the IMF maximally reached 6 nT. The Bz-component was fluctuating from -5 to +4 nT. Quiet geomagnetic conditions were observed and are expected to continue. There is still some chance for enhanced to active conditions for the next 24 hours as a consequence of the potential arrival of a coronal hole high speed stream.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 100, sur la base de 17 stations.

Indices solaires pour 06 Jun 2014

Nombre de Wolf, observé par Catania	166
Flux solaire à 10 cm	133
AK Chambon La Forêt	010
AK Wingst	008
Ap estimé	007
Nombre international de taches solaires estimé	088 - Basé sur 23 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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