Affichage des archives de mercredi, 26 août 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Aug 26 1231 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Warning condition (activity levels expected to increase, but no numeric forecast given)

	Flux de 10 cm	Ap
26 Aug 2015	125	012
27 Aug 2015	127	014
28 Aug 2015	129	020

Bulletin

Solar flaring activity was low with only some low level C flaring from AR2403. The strongest event was a C2.8 flare peaking at 23:53UT. AR 2403 seems to stabilize and decay but there remains a likelihood for M flaring or possibly an X flare. The warning condition for proton events is correspondingly maintained. Coronagraph data show a slow eruption towards the SouthWest starting yesterday afternoon. It is not believed to have any influence on Earth. Solar wind speed stabilized at around 420 km/s while total magnetic field increased from a nominal 5nT to around 10 nT currently. Bz was predominantly negative with peaks close to -8nT. Geomagnetic conditions were quiet to active (local K Dourbes 2-3, with NOAA Kp reaching 4 for the 6-9UT and 9-12UT intervals). Solar wind conditions are expected to initially remain at these levels while increasing later tomorrow (August 27) with the expected arrival of a corotating interaction region and high speed stream. Geomagnetic conditions may reach active conditions in response.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 045, sur la base de 20 stations.

Indices solaires pour 25 Aug 2015

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	121
AK Chambon La Forêt	019
AK Wingst	012
Ap estimé	012
Nombre international de taches solaires estimé	062 - Basé sur 24 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