Affichage des archives de mardi, 25 août 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Aug 25 1230 UTC

Prévisions SIDC

Éruptions solaires

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

Géomagnétisme

Quiet (A<20 and K<4)

Moniteur de Flux de Proton

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

	Flux de 10 cm	Ap
25 Aug 2015	133	006
26 Aug 2015	133	007
27 Aug 2015	133	007

Bulletin

In addition to multiple C flares, NOAA AR 2403 produced another M1 flare peaking at 17:46UT. The region continues to be the only significant region on disk and maintaining its gamma-beta-delta magnetic complexity and even showing some further growth especially in the trailing section. It continues to be a likely source for M flaring over the next days with a slight chance for an X flare. Located on the Western hemisphere the potential for strong flaring from this region also poses an increased risk for a proton event. No significant Earth directed CME's were recorded in coronagraph data. Solar wind shows a further return to nominal conditions with no obvious signatures of any arrival of the 21/22 August CME's. Solar wind speed decreased further to around 380 km/s. Total magnetic field was in the 3-5.5nT range with Bz initially variable but mostly negative since midnight. Geomagnetic conditions were quiet to unsettled (NOAA Kp 1-3 and local K Dourbes 1-3) and are expected to remain quiet to unsettled until the influence of the negative polarity equatorial coronal hole, currently passing the central meridian, sets in which is expected later on August 27 or August 28.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 061, sur la base de 16 stations.

Indices solaires pour 24 Aug 2015

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	128
AK Chambon La Forêt	011
AK Wingst	008
Ap estimé	008
Nombre international de taches solaires estimé	080 - Basé sur 26 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