Affichage des archives de samedi, 7 mars 2015

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2015 Mar 07 1222 UTC

Prévisions SIDC

Éruptions solaires

Active (M-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
07 Mar 2015	135	024
08 Mar 2015	138	018
09 Mar 2015	141	013

Bulletin

NOAA 2297 is a compact and magnetically complex region still close to the southeast limb. Over the last 24 hours, it has only produced C1 and C2 flares, but it retains its potential on a strong flare over the next few days. As this region rotates further onto the solar disk, any associated coronal mass ejection (CME) may gradually become more earth-directed. Two other sunspot groups are hardly visible and quiet. No earth-directed CMEs were observed. Proton flux was at nominal levels. There's a good chance on M-class flaring. Quiet to active geomagnetic conditions were observed. Solar wind speed has gradually been increasing, from about 460 km/s at the beginning of the period to its current 550 km/s. Bz oscillated between -9 and +9 nT. The interplanetary magnetic field was directed away from the Sun. A negative polarity equatorial coronal hole (CH) will reach the central meridian late on 09 March. Quiet to active geomagnetic conditions are expected, under the influence of the high speed stream from an extended coronal hole. There's a slight chance on a minor storm episode.

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 012, sur la base de 14 stations.

Indices solaires pour 06 Mar 2015

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	127
AK Chambon La Forêt	028
AK Wingst	012
Ap estimé	013
Nombre international de taches solaires estimé	028 - Basé sur 21 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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