Affichage des archives de mercredi, 8 mai 2013

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2013 May 08 1250 UTC

Prévisions SIDC

Éruptions solaires

Eruptive (C-class flares expected, probability >=50%)

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
08 May 2013	127	010
09 May 2013	127	007
10 May 2013	127	007

Bulletin

Solar activity has been eruptive during the past 24 hours, featuring five C flares from NOAA AR 11731, 11738, and a new unnumbered region near N03E89. More C-level flares are expected within the next 48 hours, with a slight chance for an M flare. In the last 24 hours, the IMF has decreased further from 6 to 4 nT. Due to the influence of a coronal hole high speed stream, solar wind speeds have ranged between about 480 and 560 km/s, and currently lie around 500 km/s. Similar solar wind speeds are likely on May 8 and 9, with a probably return to lower values on May 10. Geomagnetic activity has been at quiet levels (K Dourbes between 2 and 3; NOAA Kp between 2 and 3) during the past 24 hours. Quiet geomagnetic conditions (K Dourbes < 4) are expected for May 8 to 10.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 079, sur la base de 10 stations.

Indices solaires pour 07 May 2013

Nombre de Wolf, observé par Catania	111
Flux solaire à 10 cm	129
AK Chambon La Forêt	014
AK Wingst	010
Ap estimé	009
Nombre international de taches solaires estimé	076 - Basé sur 27 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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